Flat Roof Insulation System with Cross-Laminated Timber Ceiling
The flat roof insulation system complies with the most stringent of standards – from baseline building regulations through to Passivhaus.
The system boasts superb thermal performance, high levels of protection against summertime overheating, humidity regulation, acoustic insulation and superior sustainability credentials. This low embodied carbon solution is an excellent choice for specifiers and homeowners alike. Woodfibre roofs are the simple and sensible systems for the zero carbon homes of the future.
The system is suitable for most external finishing options, including; sedum, metal, timber or similar decking.

SYSTEM PERFORMANCE
U-values
0.35 – 0.09 W/m2.K
Y-values
Available on request
CROSS SECTION OF SYSTEM

- Roof finish (green roof/single ply/metal sheeting)
- 25mm WBP plywood deck
- 100mm min ventilation zone
– 100x50mm counter batten with PAVAFIX SN BAND
- ADB BREATHABLE MEBMRANE
- Sheathing board – ISOLAIR MULTI or PAVATHERM
- Insulation board – PAVATHERM
- Airtightness and support layer – DSB2 AIRTIGHTNESS MEMBRANE
- Cross-laminated timber panel
COMPONENTS AND ACCESSORIES FOR ROOF FLAT
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ISOLAIR MULTI Wood Fibre Insulation Boards
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PAVATHERM Wood Fibre Insulation Board
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STRH Timber Fixings + Washers – Box of 100
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TOPIX-THERM – HECO
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ADB Breatheable Sarking Membrane
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PAVATEX DSB 2 Membrane
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PAVAFIX Airtightness Tape (60, 20/40, 150)
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PAVAFIX SN Band – Screw Sealing Tape
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PAVATAPE (75, 150) – External Weathertightness Tape
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PAVATAPE FLEX – Penetration Tape
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PAVACOLL Adhesive Sealant
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PAVAPRIM Primer – 1L