Diffutherm - ourbarn.co.uk · Diffutherm—Performance Guide A modern wall insulation system must do more than just protect building occupants from cold. It must create a comfortable

DiffuthermWoodfibre Insulation

“The Science of Nature - The Future of Construction”“The Science of Nature - The Future of Construction”

Diffutherm—Woodfibre Wall Insulation

Diffutherm Boards Are Natural Made from 99.5% waste softwood and 0.5% inert water-proofing additives Diffutherm boards are a genuinely sustainable non-toxic building material. To make Pavatex boards, waste wood fibres are pulped and mixed with water. The pulp is heated to activate the lignin they contain in order to glue the fibres together. The pulp is then pressed into boards, dried, and cut to size. Diffutherm Boards are High Performance The advanced manufacturing process uses the in-herent properties of wood fibres to produce boards with many excellent technical qualities for thermal and acoustic insulation, thermal storage capacity, vapour permeability and moisture control. Different density sheets are laminated together and the boards interlock on all edges to optimise mechanical properties, strength and stability, moisture and air resistance and render adhesion. Diffutherm is a complete system Diffutherm boards are supplied with fully compati-ble fixings, renders and accessories for all types of wall applications. The system is backed up with full design and instal-lation guidance to ensure long term durability, high performance of the building shell, health of the building and user comfort.

The Diffutherm system has many applications The system can be used for New Buildings, ap-plied directly to timber or steel stud frames and to all types of solid masonry. It can also be used for internal and external Refurbishment of exist-ing masonry and traditionally framed timber buildings. The Diffutherm system adds the effect of ther-mal mass to lightweight buildings and provides a fully “ breathable” method for up-grading solid walls. Diffutherm boards are good for the Environment The manufacture of the boards in Switzerland is carried out under tight environmental controls to minimise energy use, emissions and pollutants. The boards are made of waste wood and lock up CO2 in their production. Substituting Diffutherm for common synthetic boards provides even more benefits for the health of the environment, buildings and their occupants.

The Diffutherm System is • Complete and fully integrated • Tested, certified, and proven in practice • Quick and simple to install • Cost efficient • High performance • Multi-functional • Environmentally Sound

a complete system for external and internal wall insulation

Natural Building Technologies Ltd - The Hangar, Worminghall Road, Oakley, Bucks HP18 9UL

Diffutherm—Performance Guide

A modern wall insulation system must do more than just protect building occupants from cold. It must create a comfortable and healthy environment for the building users in all possible combinations of ex-ternal and internal conditions and control the effects of external heat, cold, noise and internal moisture generation. The Diffutherm System…..

Keeps the building warmer for longer in cold weather. Low thermal conductivity and high vapour permeability provide high thermal insulation with no risk of interstitial condensa-tion. Vapour control membranes are unnecessary. When applied externally onto masonry walls, the masonry stays warm and dry, so enhancing its thermal storage capacity. When used on studwork the boards reduce the effect of ther-mal bridging and the interlocking board design easily achieves good air-tightness so increasing thermal performance. Energy use for heating is significantly reduced leading to lower CO2 emissions and running costs.

Keeps the building cooler in hot weather. The unique combination of high density, high specific heat ca-pacity and low thermal conductivity gives lightweight framed constructions the effect of thermal mass that would normally be associated with masonry. Compared to conventional framed constructions Diffutherm systems can keep the internal tem-perature up to 4ºC cooler over the course of a hot day. Used externally, Diffutherm slows the transmission of outside temperature extremes to the inside of the building (expressed as decrement delay). The outside daytime temperature peak is delayed in reaching the inside spaces for up to 14 hours when it will reduce the need for additional heating during evening time. Used internally the high thermal storage capacity of the boards allows excess heat to absorbed so improves internal comfort. Diffutherm moderates temperature variations inside the building and greatly improves the comfort of the occupants while reducing the need for extra cooling and ventilation.

Keeps internal humidity stable. When applied to internal wall surfaces, the hygroscopic na-ture of Diffutherm in combination with NBT mineral and clay plasters allows rapid absorption of moisture when inter-nal humidity is high, for example during cooking, washing and drying clothes. The moisture can in turn be released quickly when internal conditions are drier. This effect is important for good health and comfort of the occupants and prevents the growth of moulds, fungi, and dust mites.

Diffutherm—Performance Guide

Keeps the building fabric dry. Diffutherm is very vapour permeable and hygroscopic. This allows it to disperse short term moisture accumulating and protect vulnerable elements of the building fabric, with no reduction in the performance of the boards themselves. When used externally Diffutherm allows moisture from within the structure to pass easily to the outside. This pro-vides a safeguard against high moisture which cause decay in timber structures, ensures that masonry structures re-main dry so improving their thermal performance and pre-vents mould growth within fabric of inner face. When applied directly to the inside face of traditional frame timbers and solid wall masonry buildings the hygro-scopic nature of Diffutherm eliminates risks from interstitial condensation and controls the moisture content of any em-bedded timber, e.g. floor and ceiling joists, to below 19%. This is vital for the long-term health of the building fabric, and is completely overlooked by most conventional dry-lining and internal insulation systems.

Keeps the building quieter. The high mass, and fibrous texture of Diffutherm combined with the different density of the board layers gives excel-lent acoustic performance. Diffutherm gives by far the best results for noise absorption and reducing airborne and im-pact noise transmission over all frequencies compared with all other insulation boards. This gives mass performance to light-weight buildings and eliminates flanking sound prob-lems are when insulating solid masonry.

Keeps its integrity in fire. Diffutherm is timber and, in common with other timber products, the boards char when exposed to fire to form an insulating layer which slows down the progress of the flames. In combination with the NBT mineral renders the Diffutherm system has over 30 minutes resistance to penetration by fire.

Is an environmental benefit Diffutherm is fully certified under Natur Plus, (the environmental standard set up by the WWF) and the wood waste raw material is from FSC certified sources. The fuel used in the factories is mainly waste animal fats, and the boards lock up 1.2 tonnes of CO2 (from the wood waste) for every tonne of product produced. After accounting for manufacturing emissions there is still a net positive CO2 balance of approximately 600kg per tonne of product. When substituted for more common synthetic products the boards provide an even better environmental balance. By improving building performance they enhance the health of the environment, buildings and their occupants.


*Contact NBT for calculations of other system combinations. Advantages • Substantial savings on build cost compared with conventional timber frame and ren-

dered masonry construction • Simple construction with fewer layers allows slimmer construction and improved per-

formance compared with conventional timber frame and masonry construction • Highly vapour permeable construction without membranes or vented cavities has no

risk of interstitial condensation or decay • Thermal storage and acoustic performance compares well with heavyweight buildings • Simple, robust construction has few skilled operations and is easily adapted for off-site

manufacture • Diffutherm system locks up C0² and waste can be safely composted • Materials are non-toxic, non-irritant, safe to handle and have zero emissions once in-

stalled • Improves Airtightness • Reduces thermal bridging at reveals and openings so reduces interstitial condensation


System Combinations * (Based on Using Blown Warmcel between studs @ 600 Ctrs)

89 Studs + 60mm Diffutherm


140 Studs + 60 Diffutherm


U-Value (W/m²K) 0.25 0.22 0.19 0.18

Admittance (W/m²K) 1.55 1.55 1.55 1.55

Decrement Delay (Hours) Decrement Improve-ment (Over conven-tional EPS system with same U-Value)

8.4

5.2

10.2 7

10.4

7.2

12.4

8.4

8mm Meshed Baumit-Bayosan External Render System

Diffutherm Woodfibre Board

3mm Skim Plaster finished with NBT Breathable emulsion or Beeck Insil Mineral Paint

“Vapour Open” Insulation (Blown Warmcell, Hemp/Cotton, Sheepswool, Mineral Wool Etc.)

12.5 Plasterboard

25 x 40mm Batten

25mm Service Void

9mm OSB (all joints taped and sealed—see spec.)

89, 140 or 175mm Stud

NBT Systems NW1New Build Wall 1

®

Inside Outside

Insulation Fixing


*Contact NBT for calculations of other system combinations. Advantages • Simple and robust construction • Weathertight so no need for cavities and complicated venting details • Highly vapour permeable construction does not need membranes to control interstitial

condensation • Masonry substrate stays dry improving thermal insulation and storage capacity • Effect of outside temperature peaks on inside environment is reduced • Internal surfaces are warmer so reduces condensation • Thermal mass of Diffutherm gives greater stability to render—preventing cracking • Excellent acoustic performance compared to conventional EWI materials • Diffutherm system locks up C0² and waste can be safely composted • Materials are non-toxic, non-irritant, safe to handle and have zero emissions once installed • Improves Airtightness • Reduces thermal bridging at reveals and openings so reduces interstitial condensation


System combinations

Aerated Block (k=0.11) 215mm + 80mm Diffutherm

Plan-Ziegel ZA50 175mm Block +

100mm Diffutherm

Refurb / Retrofit 215mm Brick +

100mm Diffutherm

Refurb / Retrofit 450mm Sandstone

+100mm Diffutherm

U-Value (W/m²K) 0.28 0.35 0.36 0.37

Admittance (W/m²K) 2.20 4.15 4.27 4.91

Decrement Delay (Hours) Decrement Improve-ment (Over conven-tional EPS system with same U-Value)

14.5

4.4

13 3

15

4.1

21

5.6

8mm Meshed Baumit-Bayosan External Render System 18mm Plaster finished with NBT

Breathable emulsion or Beeck Insil Mineral Paint

Inside Outside

Diffutherm Woodfibre Board

Basecoat Bedding Mortar/ Regularising / Bonding Mortar Masonry Substrate

Insulation Fixing

Diffutherm—Woodfibre Insulation Boards

Technical DataStandards DIN 68755 Part One Thickness (mm) 60 80 100 Overall Length (mm) 1300 1300 1300 (Includes 15 mm Tongue) Board Face Length (mm) 1285 1285 1285 Overall Width (mm) 790 790 790 (Includes 15 mm Tongue) Board Face Width (mm) 775 775 775 Board Face Area (m2) 1.0 1.0 1.0 Density (kg/m3) 190 190 190 Weight per m2 (kg/m2) 5.5 8.75 15.12 Board Weight (kg) 11.28 16.37 19.37 k Value (W/mK) 0.044 0.044 0.044 Specific Heat Capacity (J/kgK) 2100 2100 2100 Diffusion Resistance Factor (µ) 5 5 5 Sd Value (m) 0.3 0.4 0.5 Compression Resistance (kN/m²) 100 100 100 (@ 10% Deformation) Reaction to Fire (BSEN13501) E E E Fixing per board on studwork 3 per stud (min 2 studs) Fixing per board on masonry 9 per board Dry - 6 with bonding Mortar Boards per pallet 30 22 18 Area per pallet (m2) 30 22 18 Pallet Weight (kg) 387 375 381

D i f f u t h e r mW o o d f i b r e


External Wall Insulation Systemfor Timber or Metal Studwork

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NBT Systems NW1

New Build Wall 1

®

3mm Skim Plaster finished

with NBT Breathable

emulsion or Beeck Insil

Mineral Paint

8mm Meshed

Baumit-Bayosan

External Render

System

Pavatex Diffutherm

Woodfibre

Insulation Board

Insulation Fixing

“Vapour Open” Insulation

(Blown Warmcell,

Sheepswool,

Hemp/Cotton,

Mineral Wool etc. )

12.7mm Plasterboard

25mm Service void

25 x 40mm Batten

89, 140 or 175mm

Timber or Metal Stud

9mm OSB (all joints taped

and Sealed - see spec)

Inside Outside

Natural Building Technologies LtdThe Hangar Worminghall Road Oakley Bucks HP18 9ULTel: +44 (0)1844 338338 Fax: +44(0)1844 338525email: [email protected] web: www.natural-building.co.uk

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200mm larger than area of damage/repair.

(See 1.06 - Render System.)

:

At all openings, service penetrations and free

edges, seal the board to the structure using

Compriband VSA No: CC0125015600 to

create an air and weather-tight joint.

:

Above Plinth Area :

Apply ….mm APU rails to all door and window

frames to form a weather-tight joint.

Apply diagonal strips of mesh reinforcement

across the corners of all openings and

continuous strips of mesh reinforcement

above the base rail and along all free board

edges (as NBT recommendations) into 2mm

of MC55W mortar.

Apply MC55W mortar to all corners and

reveals and set fibreglass mesh beads

……………. plumbed and aligned to a

render depth of 5 - 8mm.

Hand or machine apply MC55W over the

board surface and straighten out. Comb with

a tooth trowel to an overall depth of 4 - 6mm

then place sheets of fibreglass mesh lightly

onto the render (min 100mm laps).

Apply a further 2 - 3mm coat of MC55W and

smooth out. On hardening, scrape back the

surface with the edge of a trowel.

Apply …………….. decorative finish coat after

6 days.

Apply …………….. equalising paint after 6

days.

1.05 Openings and Abutments

1.06 Render System

Specification for Diffutherm EWI

system onto timber or metal frame

1.0 General

1.01 Access

1.02 Adverse Weather

1.03 Board System

1.04 Fixing Boards

:

The system comprises Pavatex Diffutherm boards and

Bayosan thin mesh coat renders supplied together with

all accessories by NBT

:

Scaffolding and access to the work must be

carried out in accordance with current CDM

and Health and Safety Regulations

:

Application of the system must only take place

in suitable weather conditions in accordance

with NBT recommendations and good

rendering practice, protecting the works if

necessary. Do not apply the Diffutherm System

in ambient temperatures below 5º C. Boards

should be rendered within 2 months. Boards

should be stored flat and dry. Edges should be

protected to prevent damage to tongue.

:

Below dpc and in the plinth area (< 150mm

above finished ground level) use EPS plinth

boards; above the plinth area use Pavatex

Diffutherm boards.

:

Above Plinth Area :

Fix the base rail …………… above dpc to each

stud packed to true line and level, using 1 No.

…………….. fixing per stud.

Locate the 1 course of Diffutherm boards

tightly in the base rail channel with grooved

side down and edge t & g joints fully engaged.

Fix through the boards into the studs using 3 No.

…………. fixings / board / stud.

Boards must span at least 2 studs. Board edges

need not coincide with stud positions, which

should be at < 600mm centres. The faces of

the boards should be flush. Stagger fixings

where board edges coincide with a stud

position.

Install 2 course in ½ bond pattern with

minimum overlap 200mm, over-lapping board

ends at vertical corners, ensuring all board joints

are fully engaged and tightly joined. Fix to studs

as for 1 course. Fill any gaps and areas of

damaged boards with loose Woodfibres and

apply a “patch” of reinforcing mesh at least

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Diffutherm InsulationDiffutherm InsulationSpecification.

EWI onto Timber or Metal Studwork


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Boards and Renders

Do not use Diffutherm boards below DPC level. Use

boards suitable for wet exposure (EPS, XPS) in the

plinth area (ie. within 0.15m of Ground Level). Refer to

Detail 4.

For air and wind-tightness seal the boards against the

structure at all joints, intersections, openings and

penetrations and along all edges using Compriband

strip.

For weather-tightness, seal the render around all

openings using the appropriate APU strips (Details 2, 3

and 5).

Light coloured finishes (light intensity > 40%) and

coarse-grained finishes (2-5mm grain sizes) are

preferred for long-term durability and appearance.

Cracking of the render system cannot be completely

avoided. Minor cracking is not detrimental to the

system and the board will not deteriorate if the cracks

are small and repaired quickly.

Apply equalisation paint to the finish render coat to

avoid discolouration from uneven drying.

To select paints for applying to the finished surface

without significantly reduction of the vapour

permeability of the Diffutherm System, refer to NBT.

General

The Diffutherm System is certified for use in rain

Exposure Zones 1, 2 and 3 (described in BS 8104 and

the BRE report “Thermal Insulation, avoiding risks”).

If intended for use in Exposure Zone 4, contact NBT

for advice.

The Diffutherm System is certified for use in buildings

where the height to the top floor is < 8m.

If intended for use in higher buildings, contact NBT for

advice.

The Diffutherm System must be designed so that no

loads from the structure are carried by the boards or

render.

Design a positive strategy for avoiding rain

penetration of the EWI system. This will include :

generous overhangs for roofs, cills and copings (in no

case < 30mm)

drip details on all overhangs

careful detailing of flashings at critical areas eg.

balconies, decks, walkways, parapets, copings,

service penetrations, roof abutments, intersecting

and adjoining buildings, etc.

window and door frames set back from the external

face of the wall by at least the thickness of the

insulation boards.

Carefully detail the OSB layer for air-tightness at all

openings and at internal corners and junctions.

Carefully detail the Diffutherm layer for wind-

tightness at all openings and in the plinth area.

Movement joints in the substrate must be

incorporated into the Diffutherm EWI System.

Consider movement joints for walls longer than 18m.

Only lightweight fittings can be attached directly to

the Diffutherm boards. Carefully plan the location of

down-pipes, lights, security systems etc. and attach

using fixing disks screwed directly to the structure.

Contact NBT for further advice on fixings.

Provide the Contractor with full and complete details

for all critical areas of the system including those

listed above leave nothing 'to be agreed on site'

The system can only be guaranteed if only the

boards, mortars, renders and accessories approved

by NBT are used.

Diffutherm InsulationDiffutherm Insulation

Key Considerations for DesignersEWI onto Timber or Metal Studwork


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Renders

Do not apply the render system onto rain-soaked

boards or when the air temperature is below 5C and

avoid working in strong, direct sunlight.

The reinforcing mesh sheets should lie in the outer 1/3

of the basecoat layer and sheets should overlap by

at least 100mm.

Additional mesh reinforcement is required around all

openings, along all corners and edges, across zones

where suspended floors intersect walls and where

boards are applied over different substrates, along

continuous straight board joints and over repaired

areas.

Seal the render around all openings using the

appropriate APU strips (Details 2, 3 and 5).

Allow 1 day/mm thickness drying time for the

basecoat before applying the topcoat.







General

The Diffutherm System must only be installed by

approved contractors who have been trained by NBT.

The details and specifications in this guide and from

the Designer should be followed as the basis of a

successful installation.

The system can be guaranteed only if the boards,

mortars, renders and accessories approved by NBT

are used in the proper specified manner.

Masonry substrates must be sound, compatible with

the bonding mortar and mechanical anchors, flat

(dubbed out if necessary to avoid excessive thickness

of the meshed render), free of loose material and

problems associated with damp or structural

movement.

Timber frames must not be excessively wet when the

boards are applied to avoid trapping moisture within

the construction.


incorporated into the Diffutherm System.














Timber frames must not be excessively wet when the

boards are applied to avoid trapping moisture within

the construction.








Boards


Key Considerations for InstallersEWI onto Timber or Metal Studwork

Design & Installation DetailsEWI onto Timber or Metal Studwork


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Key to Details


1

32

23

4

5

67

1 System Components

2 Verge Detail

3 Eaves Detail

4 Plinth Detail

5 Sill Detail

6 Additional Meshing

7 Board Pattern

1 Diffutherm Insulation Board

2 Baumit-Bayosan

MC55W Render

3 Bayosan AG01 Mesh

4 Bayosan Decorative Finish*

5 Timber or Metal Studwork

6 Wemico Mesh Corner Bead

7 Wemico Base Rail

8 Fisher Termofix 6H Fixing

(Termofix H&B for Metal)

9 Inner Sheathing

10 Insulation Material (Vapour

permeable)

1

Compriband VSA

Compriband VSA

Pavatex Diffutherm

Woodfibre Board

Pavatex Diffutherm

Woodfibre Board

Baumit-Bayosan

MC55W

(Fully Meshed)

Baumit-Bayosan

MC55W (Fully Meshed)

Baumit-Bayosan

Decor Finish &

Equalisation Paint

Baumit-Bayosan

Decor Finish &

Equalisation Paint




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Plinth Area:

150above

Finished

Ground Level

Facade Area

Compriband VSA

Plinth Board

French Drain

Plinth Detail B

Plinth Detail A

Bitumen Impregnated

Protection Board

Pavatex Diffutherm

Woodfibre Board

Pavatex Diffutherm

Woodfibre Board

Baumit-Bayosan


Baumit-Bayosan


Baumit-Bayosan

Decor Finish &

Equalisation Paint

Baumit-Bayosan

Decor Finish &

Equalisation Paint

Baumit-Bayosan

Decor Finish

Baumit-Bayosan

Hm50 (fully meshed

& rubbed up as

finish)

4b

4bFacade

French Drain

Plinth Area:

150above

Finished

Ground LevelCompriband VSA

Baumit-Bayosan

Equalisation Paint or Silicate Paint

Baumit-Bayosan

Hm50 (fully meshed & rubbed up as finish)

Baumit-Bayosan

Hm50 (fully meshed)

Bitumen Impregnated Protection Board

Plinth Board

Baumit-Bayosan

Equalisation Paint

Baumit-Bayosan

Decor Finish




ZO NES REQUIRING ADDITIO NAL

M ESH REINFORCEM ENT

1 Diagonal Strip 250mm x 500

Mesh Corner Beads2

Mesh Strip 150m m wide3

2

22

22

2

11

1

3

3

3

2

To reduce the risk of the render cracking, additional mesh reinforcement

is required along all exposed board edges and around all openings.

Bed the mesh in M C55W m ortar and then apply the main meshed render

layer, overlapping w ith the edge strips by at least 100mm.

In the diagram additional mesh is shown across the corners of w indow

and door openings (1), along all reveals and corners (2), over the starter

track and below window sills (3).

An additional band of mesh should be applied across the zone where

suspended floor joists bear onto the timber fram e walls.

6

Set out Diffutherm Boards so that board edges

DO NOT coincide with the corners of wall

openings.

Always ensure that the vertical joints are

staggered by at least 200mm between

courses and that each board is supported on

at least 2 studs.

Board joints DO NOT have to terminate on a

stud due to the tongue groove board edge.

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ils5

7 Compriband Strip

8 APU Rail

9 Render Finish

10 Sill Profile

11 Door / Window Frame

1

1

1

22

2

3

3

4

4

4

5

5 6

6

7

7

7

78

8

9

9

9

10

1

10

11

12

1211

1 Substrate

2 Diffutherm Board

3 Reveal Board

4 Reinforcing Mesh

5 Mesh Corner Bead

6 Fixing

5

6

1 Diagonal Strip 250mm x 500mm

2 Mesh Corner Beads

3 Mesh Strips 150mm Wide

4 Mesh strip 500 wide at Floor Level

4

(4)


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Installation Procedure

The substrate should be dry, clean and flat. Do not apply the Diffutherm System in ambient temperatures below 5 C°

Base Rail

Above Plinth Area :

Fix the base rail and corner rail above DPC to each

stud packed to true line and level, using 1 fixing per

stud. Rail connector clips should be fitted at all rail

joints.

Attach clip on drip profile to entire run of base and

corner rail.


Installation Procedure (1)EWI onto Timber or Metal Studwork

Compri-band

Where boards butt up to other substrates a Compri-

band sealing strip should be inserted to allow for

differential movement and provide a weather tight

seal. Such areas include window and door frames, sills,

eaves and soffit boards.

1 Compriband

2 Diffutherm

3 Meshbead4 MC55W / mesh5 Finish render6 Reveal board7 APU rail8 Fixing

1 Diffutherm board

2 MC 55W render

3 Mesh

4 Decorative finish

5 Studs

6 Mesh bead

7 Base rail

8 Fixings

9 Inner sheating

10 Insulation material

Diffutherm Boards

Locate the 1 course of Diffutherm boards tightly in the base rail channel with grooved side down and edge t & g joints

fully engaged. Fix through the boards into the studs using 3 fixing / board / stud. Boards must span at least 2 studs. Board

edges need not coincide with stud positions, which should be at < 600mm centres. The faces of the boards should be

flush. Stagger fixings where board edges coincide with a stud position.

Install 2 course in ½ bond pattern, over-lapping board ends at vertical corners, ensuring all board joints are fully

engaged and tightly packed. Fix to studs as for 1 course.

st

nd

st

Apu rails

Apply Apu rails to door and window frames to form a

wind and waterproof expansion joint. The Apu rail has

a sticky foam backing which adheres to the frame.

This prevents thermal bridging. A stiff protection strip

with a sticky surface allows enables polythene or

paper to be attached to protect the window or door.

This strip is peeled away on completion of rendering

leaving a clean neat finish.

1 Foamed backing

2 Protection strip

3 APU rail

4 Mesh

5 Substrate

6 MC55W

7 Finish render



Additional Meshing

Trowel 2mm of MC55W diagonally onto the corner

faces of all openings and smooth in strips of mesh

(25x50mm).

Trowel MC55W onto all corners and reveals and set

fibreglass mesh beads into the mortar, plumb and in

alignment, to a render depth of 5-8mm.


Installation Procedure (2)EWI onto Timber or Metal Studwork

Render System

Trowel or machine-apply MC55W over the boards and straighten out the render. Using a tooth trowel comb through

the render to ensure an overall render depth of 4-6mm.

Place sheets of fibreglass mesh lightly onto the render, with overlaps not less than 100mm.

On stiffening apply another coat of MC55W 2-3mm thick and smooth out. On hardening rough up the surface using

the edge of a trowel.

After six days apply a decorative finish coat

or

Oversills

Oversills should be fitted using one of the options

shown above prior to rendering. Apply a Compr-

band between the lower face of the sill and the

upper edge of the Diffutherm to form a weather tight

seal.

A minimum overhang distance of 30mm from front

of sill to render face should be maintained at all

times.

Face

Fix

Side

Fix

1 Compriband

2 Sill

3 Substrate

4 Diffutherm

5 MC55W / mesh

6 Finish render

30

mm

Movement Beads

Where structural movement

joints or changes in substrate

occur a movement bead

should be incorporated into

the Diffutherm system to

prevent cracking due to

differential movement.

Reveals

Fully paste the rear side of the reveal boards using

MC55W and trowel through using a tooth trowel.

Apply a compri-band along the edge of the board

and place the board tightly up against the window or

door frame.

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-Com

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&Ac c

ess

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Components & Accessories

Diffutherm onto Timber or Metal Stud

1 Pavatex Diffutherm Insulation Board

2 Bayosan MC55W or RK70N Render

3 Bayosan AG01 Reinforcing Mesh

4 Bayosan Decorative Finish *

5 Timber or Metal Stud Substrate


7 Wemico Base Rail & Clip on Profile

8 Fischer TermoFix 6H range of fixings for Timber StudsOr TermoFix H&B range of fixings for Metal Studs

* Can be further decorated with the Beecks range of mineral finishes


Base Rail.

Clip on Profile.

Mounting Set. (optional)

2.5m Length Base rail for 60mm Diffutherm:Stainless Steel No: 2146 Aluminium No: 9146



Used to support first row of Diffutherm boards(Must be set above DPC level).

2.5m Length Clip on Profile for 6mm Thick Render:Stainless Steel No: 2134 Aluminium No: 9121


Clip on drip profile for attaching to Base Rail.

Base rail mounting set containing the following:75 x Fixings 50 x 3mm Packers/Spacers and 10 x40mm Rail Connectors Pack No: 3757

Set of mounting components for base rail

Base Rail

Clip on

Profiles

Fixing

Spacer

Rail Connector

Board

Thickness

+3mm

Wemico Components conform to the following standards:Stainless Steel Products: BS 1449/2: 1983 EN10088/2: 1995 (stainless steel 304Grade) Aluminium Products: EN485/4: 1994


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Corner Rail

Render Stop

Wall Coping

Movement Beads

73cm Length Corner rail for 60mm Diffutherm:Stainless Steel No: 2416 Aluminium No: 9286

Stainless Steel No: 2418 Aluminium No: 928873cm Length Corner rail for 80mm Diffutherm:


Precut section of base rail for forming corners.

2.5m Length Render Stop for 60mm Diffutherm:Stainless Steel No: N/A Aluminium No: 9156



Box shaped render stop bead for edge protection ofDiffutherm boards on vertical terminations.

2.5m Length WEC731 & WEC741 Type Coping forvarious overall system widths - please enquire

3m Length 2320 Stainless Steel Movement Bead for8mm Thick Render (Vertical Applications only).


Movement / Expansion joint beads for creatingvertical expansion joints along wall line or at internalcorner joints.

Corner Rail

Render Stop

Movement Beads

2320 2332

Board

Thickness

+3mm

WEC731 TYPE WEC741 TYPE


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Corner Beads

APU Rail

Sealing Band

2.5m Length Corner Bead with fibre glass meshattached for External CornersPVC No: 3707 Stainless Steel No: 2031

For embedding in the render for forming edges onexternal corners.

2.6m Length APU Sealing Rail.PVC No: 3276

Used for a watertight seal to window and doorframes. Self-adhesive stip is removed then APU railis stuck to window / door frame. Self- adhesive bandcan be removed to enable a protective sheet to beapplied to cover door and windows - this is thendiscarded by breaking away the removableprotection strip.

Size 4 No: Cc0125015600

Bitumen impregnated movement seal for abutmentsto window and door frames to ensure watertightexpandable seal between render and APU rail(See www.compriband.co.uk for further details.)

6m Length Compriband VSA Sealing Strip

Corner Beads

APU RailRemovable

Protection

Strip

Self-Adhesive

Band

3707

3726

2031

Self-Adhesive

Strip


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Oversills - Standard Profiles

Oversills - Special Profiles

2.5m Lengths of white coated 1.2mm Aluminiumoversill profile. (WEC721 and WEC751 only)available in the following sizes:

WEC721/70 To suit 70mm System depth (60mmDiffutherm plus render) - Dimension “A” = 90mm




Range of preformed oversill to create / protect sillarea when using Diffutherm system.

Other sizes, colours end caps and joint piecesavailable to order.

The WE76 and WE77 profile are customer made tothe customers requirements in 1.2mm, 1.5mm,2.0mm or 3.0mm thick Aluminium - powder coatedto customers specification.

All relevant dimensions (A,C and E) to specified bycustomer ensuring dimension ‘A’ is sufficient to‘oversail’ by a minimum of 20mm.

Length is measured reveal to reveal + 100mm.

Oversills

WEC721

Type

WEC751

Type

WE76

WE77


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Example based on WE76 Type sill.

Relevent dimensions (A, C & E)

are taken on site ensuring

dimension ‘A’ is sufficient to

‘oversail’ surface finish by a

minimum of 30mm as shown.

30


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ings

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Tim

ber

Fixings for Timber


Board fixings for Timber substrates

Termofix 6H, screw fix, suitable for: wood and chipboard.

Advantages

�

�

�

�

�

Ready assembled

Low k-value

Slim shaft avoids stress in reinforcing grid

Flexible head for stress compensation

Highly corrosion-resistant screw

Description

The FISCHER Termofix 6H is a ready-assembled screw fixing for fastening Diffutherm to timber substrates.

The screw is protected against corrosion. The flexible head of the Termofix 6H compensates for changes

in length caused by variations in warmth in the render façade, thereby reducing the formation of cracks.

The air column which is created between the countersunk screw and the plug, ensures perfect insulation.

This gives the Termofix 6H its extremely low k-value. Heat loss through conduction is therefore substantially

reduced.

h dv a

l

Material Min Anchor Fixing Max Fastening

Thickness (mm) Type Part No: Depth Hv (mm) Length l (mm) Thickness

6H/60 07360 25 60 35

40 6H/80 07361 25 80 55

60 6H/100 07362 25 100 75

80 6H/120 07363 25 120 95

100 6H/140 07364 25 140 115

20

D i f f u t h e r mW o o d f i b r e


External Wall Insulation Systemfor Masonry Substrates

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Internal Finish Plaster with NBT

Breathable Emulsion Paint

Masonry Substrate

8mm Baumit-Bayosan

External Mineral

Render System

Pavatex Diffutherm

Woodfibre Insulation

System

Inside Outside


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1.05 Openings and Abutments

1.06 Render System

:

At all openings, service penetrations and free

edges, seal the board to the structure using

Compriband VSA No: CC0125015600 to

create an air and weather-tight joint.

:

Above Plinth Area :

Apply ….mm APU rails to all door and window

frames to form a weather-tight joint.

Apply diagonal strips of mesh reinforcement

across the corners of all openings and

continuous strips of mesh reinforcement

above the base rail and along all free board

edges (as NBT recommendations) into 2mm

of MC55W mortar.

Apply MC55W mortar to all corners and

reveals and set fibreglass mesh beads

……………. plumbed and aligned to a

render depth of 5 8mm.

Hand or machine apply MC55W over the

board surface and straighten out. Comb with

a tooth trowel to an overall depth of 4 6mm

then place sheets of fibreglass mesh lightly

onto the render (min 100mm laps).

Apply a further 2 - 3mm coat of MC55W and

smooth out. On hardening, scrape back the

surface with the edge of a trowel.

Apply …………….. decorative finish coat

after 6 days.

Apply …………….. Equalising paint after 6

days.

Specification for Diffutherm EWI

system onto masonry

1.0 General

1.01 Access

1.02

1.03 Board System

1.04 Fixing Boards

:

The system comprises Pavatex Diffutherm boards and

Bayosan thin mesh coat renders supplied together with

all accessories by NBT

:

Scaffolding and access to the work must be

carried out in accordance with current CDM

and Health and Safety Regulations

:

Below dpc and in the plinth area (< 150mm

above finished ground level) use EPS plinth

boards; above the plinth area use Pavatex

Diffutherm boards.

:

Above Plinth Area :

Fix the base rail ……above dpc, packed to a

true line and level, using 2 No. ….. fixing per

linear Metre.

Adverse Weather / Storage :

Application of the system must only take place

in suitable weather conditions in accordance

with NBT recommendations and good

rendering practice, protecting the works if

necessary. Do not apply the Diffutherm System

in ambient temperatures below 5º C. Boards

should be rendered within 2 months. Boards

should be stored flat and dry. Edges should be

protected to prevent damage to tongue.

Locate the 1 course of Diffutherm boards tightly in the

base rail channel with grooved side down and edge t &

g joints fully engaged. Substrate should be sound, clean

and even. Surface deviations should be leveled out

using a compatible regularizing mortar.

Fix through the boards into the substrate using 9 No.

…………. fixings per board

Install 2 course in ½ bond pattern with minimum

overlap 200mm, over-lapping board ends at vertical

corners, ensuring all board joints are fully engaged and

tightly joined. Fix to studs as for 1 course. Fill any gaps

and areas of damaged boards with loose Woodfibres

and apply a “patch” of reinforcing mesh at least

200mm larger than area of damage/repair. (See 1.06 -

Render System.)

st

nd

st


Specification.EWI onto Masonry

Internal Finish Plaster

with NBT Breathable

Emulsion Paint

Masonry Substrate

8mm Baumit-

Bayosan External

Mineral Render

System

Pavatex

Diffutherm

Woodfibre

Insulation

System

Inside Outside


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Boards and Renders

Do not use Diffutherm boards below DPC level. Use

boards suitable for wet exposure (EPS, XPS) in the

plinth area (ie. within 0.15m of Ground Level). Refer to

Detail 4.

For air and wind-tightness seal the boards against the

structure at all joints, intersections, openings and

penetrations and along all edges using Compriband

strip.

For weather-tightness, seal the render around all

openings using the appropriate APU strips (Details 2, 3

and 5).

Light coloured finishes (light intensity > 40%) and

coarse-grained finishes (2-5mm grain sizes) are

preferred for long-term durability and appearance.







To select paints for applying to the finished surface

without significantly reduction of the vapour

permeability of the Diffutherm System, refer to NBT.

General

The Diffutherm System is certified for use in rain

Exposure Zones 1, 2 and 3 (described in BS 8104 and

the BRE report “Thermal Insulation, avoiding risks”).

If intended for use in Exposure Zone 4, contact NBT

for advice.

The Diffutherm System is certified for use in buildings

where the height to the top floor is < 8m.

If intended for use in higher buildings, contact NBT for

advice.

The Diffutherm System must be designed so that no

loads from the structure are carried by the boards or

render.

Design a positive strategy for avoiding rain

penetration of the EWI system. This will include :

generous overhangs for roofs, cills and copings (in no

case < 30mm) drip details on all overhangs

careful detailing of flashings at critical areas eg.

balconies, decks, walkways, parapets, copings,

service penetrations, roof abutments, intersecting

and adjoining buildings, etc.

window and door frames set back from the external

face of the wall by at least the thickness of the

insulation boards.

Carefully detail the Diffutherm layer for wind-

tightness at all openings and in the plinth area.


incorporated into the Diffutherm EWI System.

Consider movement joints for walls longer than 18m.






Provide the Contractor with full and complete details

for all critical areas of the system including those

listed above leave nothing 'to be agreed on site'

The system can only be guaranteed if only the

boards, mortars, renders and accessories approved

by NBT are used.


Key Considerations for DesignersEWI onto Masonry


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Renders

Do not apply the render system onto rain-soaked

boards or when the air temperature is below 5C and

avoid working in strong, direct sunlight.

The reinforcing mesh sheets should lie in the outer 1/3

of the basecoat layer and sheets should overlap by

at least 100mm.

Additional mesh reinforcement is required around all

openings, along all corners and edges, across zones

where suspended floors intersect walls and where

boards are applied over different substrates, along

continuous straight board joints and over repaired

areas.

Seal the render around all openings using the

appropriate APU strips (Details 2, 3 and 5).

Allow 1 day/mm thickness drying time for the

basecoat before applying the topcoat.







General









Masonry substrates must be sound, compatible with

the bonding mortar and mechanical anchors, flat

(dubbed out if necessary to avoid excessive thickness

of the meshed render), free of loose material and

problems associated with damp or structural

movement.








Boards

Plan board layout to reduce wastage prior to

commencing installation.

A base rail must be used to start the system. (Detail 4)

Minimum bond overlap is 200mm between courses.

Boards must not be wet or damaged and board

edges must be tightly butted together.

Tightly pack all gaps between boards with woodfibre.

Seal the boards against the structure around all

openings and penetrations and along all edges

using Compriband strip.

Do not use the Diffutherm EWI system below the DPC

level. (Detail 4)

Use appropriate boards (EPS, XPS) in the plinth area

(ie. within 0.15m above Ground Level) (Detail 4)

Do not allow the boards to stand exposed to weather

for more than 60 days after fixing before applying

the render system.


Key Considerations for InstallersEWI onto Masonry


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The substrate should be dry, clean and flat. Do not apply the Diffutherm System in ambient temperatures below 5 C°

Base Rail

Above Plinth Area :

Fix the base rail and corner rail above DPC to each

stud packed to true line and level, using 1 fixing per

stud. Rail connector clips should be fitted at all rail

joints.

Attach clip on drip profile to entire run of base and

corner rail.


Installation Procedure (1)EWI onto Masonry

Compri-band

Where boards butt up to other substrates a Compri-

band sealing strip should be inserted to allow for

differential movement and provide a weather tight

seal. Such areas include window and door frames, sills,

eaves and soffit boards.

1 Compriband

2 Diffutherm

3 Meshbead4 MC55W / mesh5 Finish render6 Reveal board7 APU rail8 Fixing

1 Diffutherm board

2 MC 55W render

3 Mesh

4 Decorative finish

5 Studs

6 Mesh bead

7 Base rail

8 Fixings

9 Inner sheating

10 Insulation material

Diffutherm Boards

Locate the 1 course of Diffutherm boards tightly in the base rail channel with grooved side down and edge t & g joints

fully engaged. Fix through the boards into the studs using 3 fixing / board / stud. Boards must span at least 2 studs. Board

edges need not coincide with stud positions, which should be at < 600mm centres. The faces of the boards should be

flush. Stagger fixings where board edges coincide with a stud position.

Install 2 course in ½ bond pattern, over-lapping board ends at vertical corners, ensuring all board joints are fully

engaged and tightly packed. Fix to studs as for 1 course.

st

nd

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Apu rails

Apply Apu rails to door and window frames to form a

wind and waterproof expansion joint. The Apu rail has

a sticky foam backing which adheres to the frame.

This prevents thermal bridging. A stiff protection strip

with a sticky surface allows enables polythene or

paper to be attached to protect the window or door.

This strip is peeled away on completion of rendering

leaving a clean neat finish.

1 Foamed backing

2 Protection strip

3 APU rail

4 Mesh

5 Substrate

6 MC55W

7 Finish render



Additional Meshing

Trowel 2mm of MC55W diagonally onto the corner

faces of all openings and smooth in strips of mesh

(25x50mm).

Trowel MC55W onto all corners and reveals and set

fibreglass mesh beads into the mortar, plumb and in

alignment, to a render depth of 5-8mm.


Installation Procedure (2)EWI onto Masonry

Render System

Trowel or machine-apply MC55W over the boards and straighten out the render. Using a tooth trowel comb through

the render to ensure an overall render depth of 4-6mm.

Place sheets of fibreglass mesh lightly onto the render, with overlaps not less than 100mm.

On stiffening apply another coat of MC55W 2-3mm thick and smooth out. On hardening rough up the surface using

the edge of a trowel.

After six days apply a decorative finish coat

or

Oversills

Oversills should be fitted using one of the options

shown above prior to rendering. Apply a Compr-

band between the lower face of the sill and the

upper edge of the Diffutherm to form a weather tight

seal.

A minimum overhang distance of 30mm from front

of sill to render face should be maintained at all

times.

Face

Fix

Side

Fix

1 Compriband

2 Sill

3 Substrate

4 Diffutherm

5 MC55W / mesh

6 Finish render

30

mm

Movement Beads

Where structural movement

joints or changes in substrate

occur a movement bead

should be incorporated into

the Diffutherm system to

prevent cracking due to

differential movement.

Reveals

Fully paste the rear side of the reveal boards using

MC55W and trowel through using a tooth trowel.

Apply a compri-band along the edge of the board

and place the board tightly up against the window or

door frame.

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Key to Details


Design & Installation DetailsEWI onto Masonry

1

1

2 3

23

4

5

67

1 System Components

2 Verge Detail

3 Eaves Detail

4 Plinth Detail

5 Sill Detail

6 Additional Meshing

7 Board Pattern

1 Diffutherm Insulation Board

2 Bayosan MC55W Render

3 Bayosan AG01 Mesh

4 Bayosan Decorative Finish*

5 Masonry Substrate


7 Wemico Base Rail

8 Fisher Termofix S8 Fixing

(Termoz10P for Masonry)

*Can be further decorated with the Beecks

range of mineral finishes.

Compriband VSA

Compriband VSA

Regularizing Mortar

Regularizing Mortar

Baumit - Bayosan

Decor Finish

Baumit - Bayosan

Decor Finish

Pavatex Diffutherm

Woodfibre Board

Pavatex Diffutherm

Woodfibre Board

Baumit - Bayosan

MC55W Base Render

(Fully Meshed) Baumit - Bayosan

MC55W Base Render

(Fully Meshed)




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Plinth Detail A

Pavatex Diffutherm

Woodfibre Board

Baumit-Bayosan


Baumit-Bayosan

Decor Finish &

Equalisation Paint

4aFacade

French Drain

Plinth Area:

150above

Finished

Ground LevelCompriband VSA

Baumit-Bayosan

Equalisation Paint or Silicate Paint

Baumit-Bayosan

Hm50 (fully meshed & rubbed up as finish)

Baumit-Bayosan

Hm50 (fully meshed)

Bitumen Impregnated Protection Board

Plinth Board

Baumit-Bayosan

Equalisation Paint

Base Rail / Starter Track

Regularizing Mortar

(If Required)

Baumit-Bayosan

Decor Finish

Plinth Area:

150above

Finished

Ground Level

Facade Area

Plinth Board

French Drain

Plinth Detail B

Bitumen Impregnated

Protection Board

Pavatex Diffutherm

Woodfibre Board

Baumit-Bayosan


Baumit-Bayosan

Decor Finish &

Equalisation Paint

Baumit-Bayosan

Hm50 (fully meshed

& rubbed up as

finish)

4b

Regularizing Mortar

(If Required)

Compriband VSA




Set out Diffutherm Boards so that board edges

DO NOT coincide with the corners of wall

openings.

Always ensure that the vertical joints are

staggered by at least 200mm between

courses and that each board is supported on

at least 2 studs.

Board joints DO NOT have to terminate on a

stud due to the tongue groove board edge.

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5

7 Compriband Strip

8 APU Rail

9 Render Finish

10 Bedding Mortar

11 Sill Profile

12 Door / Window Frame

1

1

1

22

2

3

3

4

4

4

5

5 6

6

7

7

7

78

8

9

9

9

10

10

11

11

12

1212

1 Substrate

2 Diffutherm Board

3 Reveal Board

4 Reinforcing Mesh

5 Mesh Corner Bead

6 Fixing

ZO NES REQUIRING ADDITIO NAL

M ESH REINFORCEM ENT

1 Diagonal Strip 250mm x 500

Mesh Corner Beads2

Mesh Strip 150m m wide3

2

22

22

2

11

1

3

3

3

2

To reduce the risk of the render cracking, additional mesh reinforcement

is required along all exposed board edges and around all openings.

Bed the mesh in M C55W m ortar and then apply the main meshed render

layer, overlapping w ith the edge strips by at least 100mm.

In the diagram additional mesh is shown across the corners of w indow

and door openings (1), along all reveals and corners (2), over the starter

track and below window sills (3).

An additional band of mesh should be applied across the zone where

suspended floor joists bear onto the timber fram e walls.

66

1 Diagonal Strip 250mm x 500mm

2 Mesh Corner Beads

3 Mesh Strips 150mm Wide

4 Mesh strip 500 wide at Floor Level

4

(4)

55


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Diffutherm onto Masonry

1 Pavatex Diffutherm Insulation Board

2 Bayosan MC55W or RK70N Render

3 Bayosan AG01 Reinforcing Mesh

4 Bayosan Decorative Finish *

5 Timber or Metal Stud Substrate


7 Wemico Base Rail & Clip on Profile

8 Fischer Termofix S8 range of fixings for Masonry

* Can be further decorated with the Beecks range of mineral finishes


Base Rail.

Clip on Profile.

Mounting Set. (optional)




Used to support first row of Diffutherm boards(Must be set above DPC level).



Clip on drip profile for attaching to Base Rail.

Base rail mounting set containing the following:75 x Fixings 50 x 3mm Packers/Spacers and 10 x40mm Rail Connectors Pack No: 3757

Set of mounting components for base rail

Base Rail

Clip on

Profiles

Fixing

Spacer

Rail Connector

Board

Thickness

+3mm

Wemico Components conform to the following standards:Stainless Steel Products: BS 1449/2: 1983 EN10088/2: 1995 (stainless steel 304Grade) Aluminium Products: EN485/4: 1994


Diffu

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Corner Rail

Render Stop

Wall Coping

Movement Beads


Stainless Steel No: 2418 Aluminium No: 928873cm Length Corner rail for 80mm Diffutherm:


Precut section of base rail for forming corners.




Box shaped render stop bead for edge protection ofDiffutherm boards on vertical terminations.

2.5m Length WEC731 & WEC741 Type Coping forvarious overall system widths - please enquire



Movement / Expansion joint beads for creatingvertical expansion joints along wall line or at internalcorner joints.

Corner Rail

Render Stop

Movement Beads

2320 2332

Board

Thickness

+3mm

WEC731 TYPE WEC741 TYPE


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Corner Beads

APU Rail

Sealing Band

2.5m Length Corner Bead with fibre glass meshattached for External CornersPVC No: 3707 Stainless Steel No: 2031

For embedding in the render for forming edges onexternal corners.

2.6m Length APU Sealing Rail.PVC No: 3276

Used for a watertight seal to window and doorframes. Self-adhesive stip is removed then APU railis stuck to window / door frame. Self- adhesive bandcan be removed to enable a protective sheet to beapplied to cover door and windows - this is thendiscarded by breaking away the removableprotection strip.

Size 4 No: Cc0125015600

Bitumen impregnated movement seal for abutmentsto window and door frames to ensure watertightexpandable seal between render and APU rail(See www.compriband.co.uk for further details.)

6m Length Compriband VSA Sealing Strip

Corner Beads

APU RailRemovable

Protection

Strip

Self-Adhesive

Band

3707

3726

2031

Self-Adhesive

Strip


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Oversills - Standard Profiles

Oversills - Special Profiles

2.5m Lengths of white coated 1.2mm Aluminiumoversill profile. (WEC721 and WEC751 only)available in the following sizes:





Range of preformed oversill to create / protect sillarea when using Diffutherm system.

Other sizes, colours end caps and joint piecesavailable to order.

The WE76 and WE77 profile are customer made tothe customers requirements in 1.2mm, 1.5mm,2.0mm or 3.0mm thick Aluminium - powder coatedto customers specification.

All relevant dimensions (A,C and E) to specified bycustomer ensuring dimension ‘A’ is sufficient to‘oversail’ by a minimum of 20mm.

Length is measured reveal to reveal + 100mm.

Oversills

WEC721

Type

WEC751

Type

WE76

WE77


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Example based on WE76 Type sill.


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ings

f or

Maso

nryFixings for Masonry


Board fixings for Masonry

Termofix hammerset fixing for Masonry

Advantages

�

�

�

�

�

Ready assembled

Low k-value

Slim shaft avoids stress in reinforcing grid

Flexible head for stress compensation

Impact block prevents premature expansion

Description

TThe fischer Termofix fixing is a ready-assembled hammerset fixing for fastening Diffutherm insulation systems

to masonry backgrounds. The flexible head compensates for any change in length caused by heat in the

plaster façade. This reduces the formation of cracks caused by stresses in the façade. The slim shaft prevents

crushing of the reinforcing grid, which remains in its original position in the plaster.

The special plug countersinks the nail into the shaft when it is knocked into position. This makes the

conduction of heat virtually impossible, thereby achieving a low k-value. The impact lock prevents premature

expansion of the fixing when it is knocked in.

h dv a

l

Material Min Anchor Fixing Max Fastening

Thickness (mm) Type Part No: Depth Hv (mm) Length l (mm) Thickness

60 CF8/095 92458 45 95 60

80 CF8/115 92459 45 115 80

100 CF8/135 92461 45 135 100

MATERIAL SAFETY DATA SHEETAccording to EEC 91/155 EWG

DateRevisionPageQS-Ref.

29.01.04Version 11 von 5110-505-e

Trade name and synonyms : Diffutherm

1. Identification of Substance and Company

Description of product : Wood fibrous insulating boards for the buildingindustry

Manufacturer / Supplier : Pavatex Fribourg S.A.Route de la Pisciculture 37CH 1701 Fribourg

Emergency phone : +41 (0) 26.426.31.11

2. Information on Ingredients

Ingredients : Contents in % wt

Swiss Conifer 95.8Paraffin 0.7PVAc 3.5

3. Hazards Identification

Health : This product involves no particular risks. Applythe same safety measures against dust as whenprocessing wood.

Environment : This product is combustible as wood.

4. First Aid Measures

General information : no special risksInhalation : --Skin contact : --Eye contact : --Ingestion : --



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5. Fire-Fighting Measures

Suitable extinguishing media : water, CO2

Not recommended extinguishingmedia : --Special fire fighting procedures : --Special protective equipment : --Unusual fire & explosion hazards : noneHazardous combustion products : none known

6. Accidental release measures

Personal protective measures : not necessaryEnvironmental measures : not necessarySpill clean-up methods : not applicable

7. Handling and Storage

Usage precautions : --Storage precautions : keep in a dry place, store flat

8. Exposure Controls / Personal Protection

long time exposure short time exposure(8 hours) (10 minutes)

Ventilation : none noneProtective equipment : not necessary not necessaryRespirators : not necessary not necessaryProtective gloves : not necessary not necessaryEye protection : not necessary not necessaryOther protection : -- --



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9. Physical and Chemical Properties

Appearance / colour : porous boardOdour : --pH-value : ≈ 7.0Boiling range : not applicableFlash point : not applicableFlammability : not applicableAuto-ignition temperature : not applicableExplosive properties : not applicableOxidising properties : combustibleDensity (20°C) : 190 – 210 kg/m3

Solid contents (30’180°C) : < 8 % (humidity content)Solubility in water : not solubleSolubility in oil / solvent : not soluble

10. Stability and Reactivity

Stability : no decompositionConditions to avoid : none knownMaterials to avoid : none knownHazardous combustion products : none knownAdditional information : --

11. Toxicological Information

Toxicity Dose LD50 : not investigatedEye contact : possible temporary irritation (mechanical)

Skin contact : possible temporary irritation (mechanical)

After inhalation: possible temporary irritation (mechanical)

After ingestion : no available information



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12. Ecological Information

Degrability : this product is to be seen as non hazardousAcute fish toxicity : --Water hazard classification : --

13. Disposal Information

Disposal number solidified : not applicableIncineration : possibleRecycling : possible

14. Transport Information no special precautions required

Class / division : --UN-number : --Package number : --Additional information : --

Overland transportADR / RID class: --GGVE / GGVS : --Transport document : --Additional information : --

Sea freightEMS-number : --IMO / IMDG Code: --Transport document : --Additional information: --

Air cargoIATA / ICAO / DGR : --Additional information: --



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15. Regulatory Information

Label for supply : no distinguishing marks requiredEEC-number : --Symbols : --Risk-phrases : --Safety-phrases : --

16. Additional Information

The information contained herein is based upon data considered to be accurate.However, no warranty is expressed or implied regarding the accuracy of these data, theresults to be obtained from the use thereof, or that any such use will not infringe anypatent. This information is furnished as a guide only and upon the condition that personreceiving it shall make tests to determine the accuracy and suitability for his or her ownpurpose.

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