Verified by manufacturer 6 months ago
150 mm
BBA Agrément Certificate
Certificate type
Rigid PIR insulation for warm flat roofs under built-up felt, mastic asphalt and single ply membrane waterproofing.
For flat roofs under built-up felt, mastic asphalt and single-ply membrane waterproofing systems.
Powerdeck® F is a high performance rigid polyisocyanurate (PIR) foam board for use in warm flat roofs under built-up felt, mastic asphalt and approved single ply membrane waterproofing systems. It is faced both sides with a mineral coated glass tissue.
Mastic asphalt waterproofing
An isolating layer of Type 4A sheathing felt must always be used in mastic asphalt waterproofing systems. This isolates the asphalt from movement in the substrate, allows the lateral movement of moisture vapour and warm air during installation of the asphalt and acts as a vapour pressure release in service.
Roof drainage
To ensure adequate drainage the roof should have a minimum finished fall of 1:80. This may mean designing for twice the minimum finished fall to account for building inaccuracies, roof deflection and building settlement. Powerdeck® F boards are also available for tapered insulation schemes.
Thermal bridging
With increasing levels of insulation it is important to ensure the continuity of insulation at the junction of elements.
Wind uplift
The wind uplift force exerted on the roof will vary according to geographical location, site location and building height. Reference should be made to BS 6229 for adequate bonding of the vapour control layer to the deck to help resist wind uplift. Calculations relating to the bonding and any supplementary fixings should be made with reference to BS 6399.
Features and benefits:
Color | White |
Material | Polyisocyanurate (PIR) Guidance for specification option: Polyisocyanurate (PIR). |
Shape | Rectangle |
Length | 1200 mm |
Width | 600 mm |
Height | 50 mm 80 mm 100 mm 120 mm 130 mm Manufacturer guidance90 |