Powerdeck F on industrial roofs. Deck preparation and fixing
PIR insulation
A bonded roof with Powerdeck F has two interfaces to check. The first secures the insulation to its substrate. The second bonds the roof covering to the board face. Suitability depends on compatibility at both interfaces and on the condition of any layers retained during refurbishment. The contractor needs the facing type, adhesive requirements and surface preparation method before bringing pallets onto the roof. Mechanical attachment also requires a suitable anchoring substrate. Choose a first installation bay that allows inspection of a typical board joint as well as a membrane termination at an obstruction.
In this guide
Identify the bonding surfaces
Powerdeck F has modified glass-fibre facings on both sides. Check a delivery sample for dryness, cleanliness and damage that could reduce adhesion.
Label the substrate below the board and the membrane above it on the section. Specify the bonding procedure for each interface. A retained roof covering may need different preparation from a new vapour control layer.
What governs the attachment
For mechanical fixing, identify the material and thickness of the supporting element. For bonding, check the wind uplift load path through every layer down to the structure. A poorly adhered old coating can detach below the new bond.
The manufacturer gives CS(10/Y)120 and reaction-to-fire class E for boards at least 40 mm thick. B-s2,d0 applies to a specified end use. Check the assessment scope for the proposed thickness, deck and covering.
Resistance beneath the roof covering
At λ 0.026 W/(m·K), the 100 mm board has a declared resistance of 3.80 m²·K/W. At 120 mm the declared value is 4.60 m²·K/W. Allow for the height difference at fan kerbs and roof access thresholds.
In a comparison of insulation quotations, list the actual thickness and declared resistance of each board. Include a separate item for any replacement flashings so the difference in price covers the roof edges too.
Board layout on a profiled deck
Plot the steel deck ribs on the board layout. Check end bearing and the permitted span over a trough against the guidance for the chosen thickness. A cut piece at a pipe penetration needs the same check as a full board.
Confirm whether square or rebated edges are required. Edge type affects which offcuts can be reused. Check size and edge availability for the thickness being ordered.
Installing a trial bay
Before bonding, record the temperature, substrate moisture requirements and time allowed to bring the materials together. For a self-adhesive membrane, check the priming and application pressure requirements.
Where a bond test is specified, record the result and the interface at which separation occurred. A coating detaching from concrete is different from adhesive separating from a facing. Assess the result against the system acceptance criteria.
What to specify in the order
Tie the ordered Powerdeck F variant to the covering, attachment method and substrate preparation. Identify areas requiring flashings so the contractor can allocate the appropriate ancillary materials.
At handover, retain batch details for the boards, adhesive and membrane with the as-built drawing. A future repair team can use them to identify the layers it will expose in a particular bay.
Free quote
What to include in your enquiry
Tell us how you plan to use the material, the dimensions and the quantity you need. Include the thickness, grade or variant name, along with the delivery town or your preferred collection branch. For a specific product, add its name or a link to the product page. We will reply to the email address you provide to discuss availability and the terms of your order.
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