European airtightness association committee Internet Meeting 26/09/12

European airtightness association committee

Internet Meeting

26/09/12

Participants• Belgium: Xavier Loncour, Clarisse Mees (Observers)• Czech Republic: Jiri Novak (Asociace Blower Door CZ” (A.BD.CZ))• Denmark: Walter Sebastian (Klimaskaerm) - Apologies• France: Rémi Pelini (Syneole) - Apologies• Germany: Oliver Solcher (FliB)• Italy: Guenther Gantioler (ATTA) – No answer ?• Sweden: Eva Sikander (Informal network in Sweden)• UK: Rob Coxon, David Unwin, Tom Jones (ATTMA)• TightVent: Peter Wouters, Rémi Carrié, Maria Kapsalaki

Agenda• Review of previous action list• Information within committee

– Latest documents available on website (contact list, review of applicable standards, summary of airtightness requirements)

• Publication of AIVC-TightVent reports on air leakage databases and summary of March workshop

• Feedback on Copenhagen conference• Information on ISO TC 163 / SC 1 / WG 10 work• Status on actions on airtightness measurements accuracy and precision /

calibration• Discussion on questionnaire on competent tester schemes• Events (conferences, workshops and webinars)• AOB• Next meetings

New action listNr. Description By When 1. Airtightness requirements summary – Include information from Sweden Eva Jan. 31 2. Airtightness requirements summary – Modify the document with

feedback from Czech republic and Sweden Rémi Feb. 15

3. Airtightness requirements summary – Make revised version public Rémi Feb. 15 4. Review of standards – Correct typo and make revised version public Rémi Feb. 15 5. Give explanation why uncertainty on reference value has no impact on

energy use calculation if same reference value is used for both. Rémi Feb. 15

6. Contact list - Send list of contacts of airtightness associations – Send update as needed to Rémi

All Jan. 31

7. Give feedback on questionnaire for tester schemes All Jan 12 8. Revise questionnaire for tester schemes Rémi Jan 18 9. Fill in new questionnaire All Jan 31 10. Next meetings:

- Wednesday 7 March 2013, 09:30-11:30 (WebEx, Brussels time) - Thursday 6 June 2013, exact time to be give (physical meeting

before BUILDAIR conference)

Previous action listNr. Description By When 1. Approval of actions planned / modifications TightVent

Steering committee

Oct. 9

2. Send list of contacts of airtightness associations Rémi Oct.10 3. Review and update contact list All Oct. 20 4. Template sheet for summary information regarding competent tester

scheme Rémi Nov. 15

5. Fill in template information for competent tester scheme, including reference list of applicable document

All Dec. 15

6. Template sheet for summary information regarding testers training in competent tester schemes

Rémi Nov. 15

7. Give reference of guidance documents for airtightness testing (going beyond standard), preferably with internet link

All Nov. 1

8. Draft document on hints to improve airtightness accuracy and precision Rémi Dec. 1 9. Send list of contacts within ISO 9972 revision Oliver Nov. 1 10. WebEx meeting on calibration procedure: set date and send invitation.

Include BlowerDoor and Retrotec for discussion. Rémi, Rob Nov. 15

11. Send draft table of summary of requirements Rémi Oct. 15 12. Review and feedback on summary table of requirements All Nov. 1 13. List of applicable standards for airtightness (test, products, components):

send list already available Eva Oct. 15

14. Send reference list of available documents on training of designers and craftsmen, preferably with internet link

All Nov. 1

15. Next meetings: - Wednesday 9 January 2013, 09:30-11:30 (WebEx, Brussels time) - Thursday 6 June 2013, exact time to be give (physical meeting

before BUILDAIR conference)

Information within committee• Latest documents available on private area of

TightVent website– http://tightvent.eu/partners/airtightness-testers-

associations– Password is TVAAC2012 , please do not disclose it.

• Now includes contact list, review of applicable standards, summary of airtightness requirements

Contact list

Association Country First Name Last Name Name Organization e-mailFlib Germany Oliver Solcher Oliver Solcher Flib [email protected] Italy Guenther Gantioler Guenther Gantioler TBZ [email protected] UK Rob Coxon Rob Coxon Stroma [email protected] Denmark Walter Sebastian Walter Sebastian BMT Building Enviroment Consultants Ltd. [email protected] name Belgium Xavier Loncour Xavier Loncour BBRI [email protected] name Sweden Eva Sikander Eva Sikander SP Technical Research Institute of Sweden [email protected] Blower Door CZ (A.BD.CZ) Czech Republic Jiri Novak Jiri Novak Czech Technical University [email protected] Norway Hans Ananiassen Hans Ananiassen Klimaskjerm [email protected] France Rémi Pellini Rémi Pellini Sirteme [email protected] TheCH Switzerland Christoph Tanner Christoph Tanner Baucheck-Tanner [email protected]

Contact list for the airtightness association committee

Summary of requirementsCountry or Region Program, Standard or Regulation Indicator

Envelope Area Volume

Floorarea

ReferencePressure

Minimum requirementin some cases

Maximum(s) value for the building airtightness**** Comments

France (FR)*** Regulation RT2012, Effinergie label Q4Pa_surf Yes No No 4 YesFrom 0,4m3/m²/h (Effinergie low energy house) to 1 (residential buildings)

Minimum requirement for all new residential buildings, the value must be justify either by measurement undertaken by authorised tester or by approved quality approach

Belgium, Flanders (BE)* Flemish EPB regulation q50 Yes No No 50 No (default value) --

Czech republic (CZ)* CSN 73 0540-2 (Standard) n50 No Yes No 50 YesFrom 0,6 vol/h for passivhaus to 4,5 vol/h for houses without mechanical ventilation system

Germany (DE)**

En EV 2009 (Regulation), DIN 4108-2011, DIN V 18599 (Standards), Passivhaus (Program) n50 and q50 Yes Yes No 50 Yes

From 0,6 vol/h for Passivhaus to 3 vol/h for houses without mechanical ventilation system

Except for passive houses (Passivhaus), measurement is not mandatory. In EnEv, the requirement is different in building with and without mechanical ventilation. n50 is used as indicator for all buildings, an additional requirement for the q50 is set in DIN 4108 for buildings whose volume is greater than 1500m3

Denmark (DK)** Danish building regulation (DR10) w50 No No Yes 50 Yes From 1 l/s/m² for low energy buildings to 1,5 l/s/m² Measuring is compulsory and the results is the average of pressurisation and depressurisation

Spain (ES)*** CTE-HE1/CTE-HE2 (Regulation) -- No No No 100 Only for components --There is requirements only for windows, the envelope airtightness is estimated from the number of opening in the envelope

Finland (FL)**Finnish building code, requirements and instructions 2012 q50 Yes No No 50 Yes 4 m3/h/m² From 2012 this value is both a maximum and a default value for calculation, no measurement required

Greece (GR)* -- -- -- -- -- -- No -- No regulation

Italy (IT)* -- -- -- -- -- -- No -- No regulation today (2008) requirements on windows are expected

Netherlands (NL)** Dutch building code, building act 2012 qv10 No No No 10 Yes 0,2 m3/sRequirements: the airflow should be under 0,2m3/s but measurement is not compulsory. This corresponds roughly to n50=8/h for convential dwelling

Norway (No)*Norwegian Technical Building Regulations n50 No Yes No 50 Yes 3 vol/h Measurement is not required

Poland (PL)*Technical Requirements as of 12 04 2002 -- -- -- -- __ No -- No requirements but airtightness is taken into account in the EP-calculation

Portugal (PT)* -- -- -- -- -- -- No -- No regulation

Switzerland Minergie***n50st <=>

q50 Yes No No 50 Yesn50st<0,6 (Passive houses) and n50st<1 low energy houses Measurement is required only for passive houses

United Kingdom (UK)**UK building regulation, approved document part L q50 Yes No No 50 Yes

Mostly 10 m3/h/m² (value from 3 to 5 m3/h.m² are foreseen for the next regulation) Measurement undertaken by an authorised tester is required

Airtightness requirements in Europe

Review of standardsVersion 1, December 2012

Standard Reference Technical Body Title ICS (International Classification for Standards) Scope

EN 12207:1999 CEN/TC 33 - Doors, windows, shutters, building hardware and curtain walling

Windows and doors - Air permeability - Classification

91.060.50 - Doors and windows This standard defines the classification of test results for completely assembled windows and doors of any materials after testing in accordance with prEN 1026.


Industrial, commercial and garage doors and gates - Air permeability - Classification

91.060.50 - Doors and windows This European Standard specifies the classification for air permeability for doors in a closed position, when tested in accordance with EN 12427. The doors are intended for installation in areas in the reach of people, for which the main in-tended uses are giving safe access for goods, vehicles and persons in industrial, commercial or residential premises. The doors may be manually or power operated. This document applies to all doors provided in accordance with prEN 13241:1998. 1.2 Exclusions It does not apply to: - lock gates and dock gates; - doors on lifts; - doors on vehicles; - armoured doors; - doors mainly for the retention of animals; - theatre textile curtains; - horizontally moving doors less than 2,5 m wide and 6,25 m² area, designed principally for pedestrian use; - revolving doors of any size; - doors outside the reach of people (such as crane gantry fences); - railway barriers; - barriers used solely for vehicles.


Windows and doors - Air permeability - Test method

91.060.50 - Doors and windows This standard defines the conventional method to be used to determine the air permeability of completely assembled windows and doors of any materials, when submitted to positive or negative test pressures. This test method is designed to take account of conditions in use, when the window or door is installed in accordance with the manufacturer's specification and the requirements of relevant European Standards and codes of practice. This standard does not apply to the joints between the window or door frame and the building construction.


Industrial, commercial and garage doors and gates - Air permeability - Test method

91.060.50 - Doors and windows This European Standard specifies a test method for determining the air permeability for doors in a closed position. The doors are intended for installation in areas in the reach of people, for which the main in-tended uses are giving safe access for goods, vehicles and persons in industrial, commercial or residential premises. The doors may be manually or power operated. This document applies to all doors provided in accordance with prEN 13 241:1998. 1.2 Exclusions It does not apply to: - lock gates and dock gates; - doors on lifts; - doors on vehicles; - armoured doors; - doors mainly for the retention of animals; - theatre textile curtains; - horizontally moving doors less than 2,5 m wide and 6,25 m² area, designed principally for pedestrian use; - revolving doors of any size; - doors outside the reach of people (such as crane gantry fences); - railway barriers; - barriers used solely for vehicles.


Airtight shutters - Air permeability test 91.060.50 - Doors and windows This European Standard specifies a test method for determining the air permeability of shutters that claim to conform to class 5 of thermal resistance "airtight shutters" according to standards prEN ISO 10077-1:1999 and prEN 13125:1998, when allocation cannot be given by geometrical criteria.

Buiding & Ductwork Airtightness Standards

Door and Windows

Shutters & Blinds

Publications

Feedback on Copenhagen conference

• Over 160 particpants• Over 100 presentations• Summary of airtightness

track will be published in January issue of the REHVA journal and on AIVC and TightVent websites

• Good feedbackNumber of total responses=67

Q4. Overall did the conference meet your expectations?

Information on ISO TC 163 / SC 1 / WG 10 • Mail from Oliver• Standards in the pipeline

– ISO 9972 « Thermal performance of buildings – determination of air permeability of buildings – Fan pressurization method »: CD to be submitted as DIS (Draft International Standard).

– ISO 12569 « Thermal performance of buildings – Determination of air change in buildings – Tracer gas dilution method ». FDIS was in enquiry until 16/10/2012.

– ISO 14857 : « Thermal performance in the built environment – Determination of air permeance of materials ». Canada wanted to include modifications to draft document. Was foreseen to send it as FDIS for enquiry by the end of the year.

– ISO 16956 : « Thermal performance in the built environment – Determination of Air flow Rate in Building applications by Field Measuring Methods ». First draft (CD) available but there are already 2 CEN standards dealing with the same subject. Draft to be revised to be consistent with CEN standard as much as possible.

• Also, the group wants to work on 2 additional subjects:– Measurement of ductwork airtightness– Measurement of the airtightness of large buildings

• NOTE: ATTMA notes that what makes a large building difficult to test is its height and/or partitions, not necessarily its size

Status on actions on airtightness measurements accuracy and precision / calibration

• Can be an endless work• Need to better characterize the scope of the

work• WebEx was planned with TightVent partners end

of 2012 but had to be cancelled• => Status idle

Questionnaire on competent tester scheme

• To be finalized by Jan 18• To be filled in by meeting attendees by Jan 31

Discussion on reference value used for airtightness indicator

• Xavier Loncour suggests to conduct a comparison exercise on the same building(s) to see to what extent different interpretations of the reference values can affect the indicator

• However, it is unclear whether this is an international exercise since we know there is significant discrepancy in the values obtained by technicians in the same country (e.g., on volumes, cold surface areas, etc.)


• The uncertainty on the reference value has a direct impact on the uncertainty on the airtightness indicator

– 10% error on volume implies 10% error on n50 value– This may be important for compliance to a given limit value of the airtightness

indicator• On the other hand, this uncertainty can be eliminated in the energy calculation since

the energy calculation uses the total leakage flowrate• For example, assume energy use is calculated from the calculated infiltration rate and

degree-days

• where Einf is expressed in kWh, Vbld is the building’s volume, and DD is the number of degree-days in Kelvin days

• And assume ninf can be estimated with

DDVnE bldinfinf 34.01000

24

bldVVnn 5050

inf 201

20


• Equation becomes

• And therefore the building volume has no influence on the calculation of the energy use as long as you use the same value for calculating the n50 as the one you use in the EP calculation.

• The same conclusion can be drawn if the indicator is normalized with the cold area.• In sum,

– The uncertainty on the reference value to normalize the airtightness indicator affects directly the uncertainty on the airtightness indicator

– But, as long as you use the same reference value to normalize the airtightness as the one which is used in the EP calculation, there should be no impact on the energy calculation.

DDVVVE bldbld

50

inf 20134.0

100024

Events• Quality of ventilation systems in Brussels

– 18-19 March 2013• Airtightness workshop in Washington DC

– 18-19 April 2013• BUILDAIR symposium in Hannover

– 7-8 June 2013• AIVC-TightVent 2013 conference in Athens

– 25-26 September 2013

AOB

Next meetings• Internet meeting

– Thursday 7 March 2013, 10:00-12:00 (WebEx)• Physical meeting

– At BUILDAIR symposium?• Tentative date: Thursday June 6 2013 in Hannover

– Starting at 10:00? Or 09:00?

Documents

European airtightness association committee Internet Meeting 26/09/12