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ENSEMBLE ACOUSTICAL PLASTERBOARD CEILING · PDF file 4 SYSTEM SUMMARY System USG Boral Ensemble™ Acoustical Plasterboard Ceiling Framing Rondo Keylock Suspension System Application

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Text of ENSEMBLE ACOUSTICAL PLASTERBOARD CEILING · PDF file 4 SYSTEM SUMMARY System USG Boral...

  • ENSEMBLE™ ACOUSTICAL PLASTERBOARD CEILING Technical Manual (Installation Guide)

    USGBoral.com Interior Linings Ceilings Cornice Finishes Systems Solutions

  • 2

    CONTENTS

    Introduction to the System 2

    System Summary 3

    Design Considerations 4

    Components 6

    Personal Protective Equipment 11

    Spraying Equipment 12

    System Configuration 13

    Installation of Board 16

    Mixing of USG Boral Ensemble™ Spray-Applied Finish 19

    Setting the Equipment 20

    Spraying 22

    Cleaning 24

    Ceilings

    INTRODUCTION TO THE SYSTEM USG Boral Ensemble™ Acoustical Plasterboard Ceiling offers the seamless look of plasterboard with true acoustical performance. Installation is similar to standard plasterboard and plasterboard suspension systems. USG Boral Ensemble™ Ceiling Panels are highly engineered gypsum panels that perform like acoustical ceiling panels.

    Product Sizes Remarks

    Rondo Top Cross Rail (PN 128) Length: 3600mm Height: 38mm Spaced at 1200mm centres maximum

    Rondo Furring Channel (PN 129) Length: 3600mm Height: 28mm Spaced at 600mm centres maximum

    Rondo Furring Channel Track (for perimeter) (PN 140) Length: 3000mm

    Rondo TCR and Rod Joiner (PN 2534)

    Rondo TCR to FC Joiner (PN 139)

    Rondo 5mm Soft Galvanised Suspension Rod (PN 121) Length: 3600mm Spaced at 1200mm centres maximum

    90mm-thick 14kg/m3 glasswool 90mm x 600mm x 2700mm

    USG Boral Ensemble™ Ceiling Panels 13mm x 1200mm x 3000mm

    USG Sheetrock® Brand Paper Joint Tape 63.5mm x 76.2m or 63.5mm x 152.4m

    USG Boral BaseCote™ 20kg per bag

    USG Boral Sheetrock® Lightweight Finishing Compound Plus 3 18kg per pail

    USG Boral Ensemble™ Spray-Applied Finish, White 17L per pail

    Features and Benefits • Non-directional, monolithic appearance with

    fine texture • Special acoustical perforated USG Boral Ensemble™

    Panels to optimise sound performance • Installs and finishes similar to plasterboard • Up to NRC 0.80 and αw 0.80 • Less than 0.5mg/m3 TVOC • High light-reflective finish (LR-0.85) reduces

    fixture and energy use • Acoustically transparent spray-applied finish

    Applications • Reception areas • Lobbies • Conference rooms • Restaurant dining areas • Museums / Galleries • Heritage Buildings • Retail • Spaces with multiple hard surfaces • Courtrooms • Offices • Classrooms or higher education • Libraries • Healthcare offices and lobbies

    Ensemble™

  • 4

    SYSTEM SUMMARY

    System USG Boral Ensemble™ Acoustical Plasterboard Ceiling

    Framing Rondo Keylock Suspension System

    Application Reception areas, Lobbies, Conference rooms, Restaurant dining areas, Museums / Galleries, Retail, Spaces with multiple hard surfaces, Courtrooms, Offices, Classrooms or higher education, Libraries, Healthcare offices and lobbies.

    Description USG Boral Ensemble™ Acoustical Plasterboard Ceiling is a lightweight, non-combustible, and high acoustic seamless ceiling system consisting of 13mm-thick USG Boral Ensemble™ Ceiling Panels, screw fixed to a Rondo Keylock Suspension System, and finished using USG Boral Ensemble™ Spray-Applied Finish.

    Performance Mass ≈ 10kg/m2

    Acoustic rating Up to NRC 0.80, αw 0.80, CAC 50

    Light reflectance 0.85

    Fire hazard properties Group 1 - Australia, Group 1s - New Zealand (AS/NZS 3837).

    Finish White, seamless, and spray-applied fine texture with low VOC-emitting material

    Specification Lining USG Boral Ensemble™ Ceiling Panels 13mm-thick

    Framing Rondo Keylock Suspension System

    Insulation Glasswool 90mm-thick 14kg/m3

    Fastener 32mm Type “S” Needle Point Screws

    Joint Tape USG Sheetrock® Brand Paper Joint Tape

    Jointing Compound 1st and 2nd coat – USG Boral BaseCote™

    3rd coat – USG Boral Sheetrock® Lightweight Finishing Compound Plus 3

    Final finish USG Boral Ensemble™ Spray-Applied Finish

    Warranty To ensure the performance of this system meets the USG Boral Warranty requirements, only USG Boral products are to be used and installed in accordance with USG Boral specification and recommendations.

    DESIGN CONSIDERATIONS

    Glancing Light Glancing light is the light that shines across a surface, rather than directly at it. Glancing light casts shadows from minuet undulations that would not normally be visible in diffused (non-directional) lighting. While minor surface variations can always be expected (even with a Level 5 finish), the appearance of flatness will depend predominantly on the amount of glancing light the surface receives and to some degree, its intensity and direction. Some of the worst instances of glancing light occur with ceiling-mounted unshaded light globes and where windows are located close to ceilings, allowing sunlight to shine across adjacent surfaces. In order to avoidthe effects of glancing light, it is important to carefully plan the selection and placement of windows and lighting during the design phase.

    Artificial Light It is recommended that artificial lighting should either be hung below the ceiling surface and fitted with shades, or recessed into the ceiling (i.e. downlights). Positioning of feature lighting, such as spot and flood lights, needs to be planned so that light shining across the ceiling surface is minimised. High output lights are more severe in their effect because they create deeper shadows. Similarly, the whiter the light, the stronger the contrast and the greater the perceived surface variations. Soft, low wattage, diffused lighting provides the most favourable lighting conditions for ceiling surfaces.

    Natural Light The effects of natural glancing light can be exaggerated by late afternoon or early morning sunlight, as well as reflections from adjacent walls, roofs and water features such as swimming pools, canals and waterways. Raked ceilings abutting clerestory windows, and flat ceilings abutting window heads, are likely to be affected. Where a building design cannot be changed, the effects of glancing light can be minimised by using window shades, soft furnishings, curtains, blinds and pelmets.

    NOTES:

    • USG Boral publication Guide to Lighting and Decoration of Plasterboard provides further guidance to good lighting and decoration practice.

    • High intensity halogen floodlights or fluorescent lights should not be used for visual inspection of interior surfaces, as they create unfavourable glancing light conditions.

    Ceilings Ensemble™

  • 6

    COMPONENTS

    Rondo Keylock Suspension System

    Insulation 90mm-thick 14kg/m3 glasswool

    Rondo Top Cross Rail (PN 128)

    Rondo Suspension Clip (PN 2534)

    Rondo Furring Channel Track (PN 140)

    Rondo Furring Channel (PN 129)

    Rondo Connecting Clip (PN 139)

    Rondo 5mm Soft Galvanised Suspension Rod (PN 121)

    Plasterboard Lining

    USG Boral Ensemble™ Ceiling Panels 13mm-thick, 1200mm-wide, and 3000mm in length, with tapered edges as supplied by USG Boral. To be identified by a translucent veil on the front face and a translucent veil on the back face, as well as a R12-1 12mm Round Hole pattern with no band and having 20% perforation ratio on the board surface.

    Ceilings Ensemble™

  • 8

    Finishing Systems

    Name: USG Boral Sheetrock® Paper Joint Tape

    Size (width x length): 63.5mm x 76.2m or 63.5mm x 152.4m

    Name: USG Boral BaseCote™

    Colour: Off white

    Working time: Setting type – 45, 60, 90 minutes working time

    Packaging: 20kg bag 

    VOC: Less than 50g per litre

    Joint Tape

    First and Second Coat

    COMPONENTS

    Name: USG Boral Sheetrock® Plus 3 Lightweight Finishing Compound Plus 3

    Colour: Off white

    Working time: Setting type – air dry

    Packaging: 18kg bag

    VOC: Less than 50g per litre

    Name: USG Boral Ensemble™ Spray-Applied Finish

    Colour: White

    Binder: Water-based acrylic

    Coverage: Approximately 10m2 per 17-litre pail

    pH: 9.0 to 10.0

    Weight Solids: 55-60%

    Packaging: 17-litre pail

    Third Coat

    Ceilings Ensemble™

  • 10

    Finishing Tools

    Sanding block with 180 to 220-grit sandpaper Must use only sanding block with sandpaper to sand, take care not to scuff the front veil. No wet sanding or sponge sanders allowed.

    Pitch squeegee trowel

    COMPONENTS

    Disposable Protective Overalls

    P2/N95 Dust Mask (AS/NZS 1716:2012)

    Safety Glasses

    PERSONAL PROTECTIVE EQUIPMENT

    The P2/N95 mask is a particulate filter personal respiratory protection device, capable of filtering 0.3µm particles. It complies with the AS/NZS 1716:2012.

    • N95 classification indicates compliance with NIOSH testing requirements

    • P2 classification indicates compliance with European testing requirements

    *Image credit: https://www.homedepot.com/p/Florida-Coast-Super-Polymer- Coveralls-HD-1428/301810935

    * Florida Coast Super Polymer Coveralls is a trademark of Home Depot Product Authority, LLC (or their affiliates). The depiction in this material is for illustrative purpose only and is not an endorsement by either party on the subject product.

    Peaked Cap

    Ceilings Ensemble™

  • 12

    Texture Sprayer

    Air Compressor

    SPRAYING EQUI

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