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Danosa 75mm XPS Concrete Slab Grey - 500mm x 500mm
Vendor:Danosa
Free delivery on orders over
£450£540
Regular price £10.56 £12.67Sale price £10.56 £12.67 Regular priceUnit price per£0.00 -
Express Delivery
Celotex TB4000 Thermal Bridging Board 1.2m x 2.4m - All Sizes
Vendor:Celotex
Free delivery on Celotex orders over
£300£360
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Regular price £9.69 £11.63Sale price £9.69 £11.63 Regular priceUnit price per£0.00 -
EcoTherm Eco-Liner 1.2m x 2.4m - All Thicknesses
Vendor:Ecotherm
Free delivery on Ecotherm orders over
£300£360
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Guide Price: £62.53 Guide Price: £75.04 -
Thermaroof TR24 (All Sizes) 1200mm x 600mm
Vendor:Kingspan
Free delivery on Kingspan orders over
£300£360
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POA -
EcoTherm Eco-Versal 2.4m x 1.2m - All Thicknesses
Vendor:Ecotherm
Free delivery on Ecotherm orders over
£300£360
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Regular price £9.69 £11.63Sale price £9.69 £11.63 Regular priceUnit price per£0.00 -
PowerDeck U (1.2m x 0.6m) All Sizes
Vendor:Recticel
Free delivery on Recticel orders over
£300£360
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Tyvek Supro Plus 50m x 1.5m
Vendor:Tyvek
Free delivery on Tyvek orders over
£300£360
Regular price £189.65 £227.58Sale price £189.65 £227.58 Regular priceUnit price per£0.00 -
IKO Enertherm ALU PIR 2.4m x 1.2m - All Sizes
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
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Regular price £9.71 £11.65Sale price £9.71 £11.65 Regular priceUnit price per£0.00 -
Recticel Eurothane Eurodeck 2.4m x 1.2m - All Sizes
Vendor:Recticel
Free delivery on Recticel orders over
£300£360
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STRP Pro High Performance Reinforced Foil Vapour Control Layer 1.6m x 50m (80m2 Roll)
Vendor:Novia
Free delivery on orders over
£450£540
Regular price £194.98 £233.98Sale price £194.98 £233.98 Regular priceUnit price per£0.00 -
Kingspan Thermaroof TR27 Flat Roof Board - All Sizes
Vendor:Kingspan
Free delivery on Kingspan orders over
£300£360
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Regular price £76.85 £92.22Sale price £76.85 £92.22 Regular priceUnit price per£0.00 -
Powerdeck F 1.2m x 0.6m - All Sizes
Vendor:Recticel
Free delivery on Recticel orders over
£300£360
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Steico Special Dry Wood Fibre Sarking/Sheathing Board - All Sizes
Vendor:Steico
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Regular price £22.80 £27.36Sale price £22.80 £27.36 Regular priceUnit price per£0.00 -
Multiwall Polycarbonate Sheet Bronze 4000mm x 1250mm x 35mm
Vendor:B4L Roofing
Free delivery on orders over
£450£540
Regular price £181.10 £217.32 -
Multiwall Polycarbonate Sheet Bronze/Opal 3000mm x 1050mm x 25mm
Vendor:B4L Roofing
Free delivery on orders over
£450£540
Regular price £92.07 £110.48 -
IKO Enertherm ALU 25mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £9.71 £11.65Sale price £9.71 £11.65 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 70mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £20.25 £24.30Sale price £20.25 £24.30 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 110mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £32.15 £38.58Sale price £32.15 £38.58 Regular priceUnit price per£0.00 -
Kingspan OPTIM-R E Inverted Roofing System
Vendor:Kingspan
Free delivery on Kingspan orders over
£300£360
POA -
Multiwall Polycarbonate Sheet Athermic 3500mm x 1400mm x 25mm
Vendor:B4L Roofing
Free delivery on orders over
£450£540
Regular price £143.20 £171.84 -
Multiwall Polycarbonate Sheet Athermic 4000mm x 800mm x 25mm
Vendor:B4L Roofing
Free delivery on orders over
£450£540
Regular price £104.22 £125.06 -
IKO Easyseal Air and Vapour Control Layer - 15m x 1m (Pallet of 25)
Vendor:IKO
Free delivery on orders over
£450£540
Regular price £2,350.00 £2,820.00Sale price £2,350.00 £2,820.00 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 30mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £11.10 £13.32Sale price £11.10 £13.32 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 75mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £20.13 £24.16Sale price £20.13 £24.16 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 120mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £30.45 £36.54Sale price £30.45 £36.54 Regular priceUnit price per£0.00 -
Multiwall Polycarbonate Sheet Athermic 2500mm x 700mm x 25mm
Vendor:B4L Roofing
Free delivery on orders over
£450£540
Regular price £54.08 £64.90 -
Multiwall Polycarbonate Sheet Bronze 3500mm x 1050mm x 25mm
Vendor:B4L Roofing
Free delivery on orders over
£450£540
Regular price £103.80 £124.56 -
IKO Enertherm ALU 40mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £14.00 £16.80Sale price £14.00 £16.80 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 80mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £23.35 £28.02Sale price £23.35 £28.02 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 140mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £37.90 £45.48Sale price £37.90 £45.48 Regular priceUnit price per£0.00 -
Multiwall Polycarbonate Sheet Athermic 4500mm x 800mm x 25mm
Vendor:B4L Roofing
Free delivery on orders over
£450£540
Regular price £117.22 £140.66 -
Multiwall Polycarbonate Sheet Bronze 4500mm x 1400mm x 25mm
Vendor:B4L Roofing
Free delivery on orders over
£450£540
Regular price £174.10 £208.92 -
IKO Enertherm ALU 50mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £14.55 £17.46Sale price £14.55 £17.46 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 90mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £25.40 £30.48Sale price £25.40 £30.48 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 150mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £37.50 £45.00Sale price £37.50 £45.00 Regular priceUnit price per£0.00 -
IKO Enertherm ALU 60mm x 2.4m x 1.2m
Vendor:IKO PIR
Free delivery on IKO PIR orders over
£300£360
Regular price £18.15 £21.78Sale price £18.15 £21.78 Regular priceUnit price per£0.00
Welcome to the Flat Roof Insulation category on Build4Less! As experts in the field, we're here to guide you through the selection of flat roof insulation solutions suitable for a variety of applications.
Composite Insulated Roof Panels
333 Box Profile Composite Insulated Roof Panels (Goosewing Grey) are an all-in-one solution, combining durability, insulation, and a sleek finish. Ideal for commercial and industrial buildings, these panels offer robust weather protection and thermal efficiency.
SuperFOIL Insulation Products
SuperFOIL offers a comprehensive range of multi-layer foil insulation products suitable for various applications:
- Foil Tapes: These are essential for sealing joints and edges of insulation sheets to maintain continuity of the insulation layer.
- Foil Insulation Rolls: Available in different thicknesses, these rolls provide a high-performance insulation layer, reflecting radiant heat and providing a vapour control layer.
Pipe Wraps and General Purpose Wraps: Specifically designed for wrapping around piping or for smaller applications, providing targeted insulation to reduce heat loss.
Actis Insulation
Actis Boost'R Hybrid Reflective Breather Membrane combines insulation with a reflective layer, ideal for use in conjunction with other insulation materials to enhance overall thermal performance.
Sheepwool Insulation
Sheepwool offers natural, breathable insulation products like Loose Wool and Window and Door Filler. These are perfect for environmentally-conscious projects requiring a sustainable, yet effective insulation solution.
Kingspan Thermataper
Kingspan Thermataper TT47 and TT46 are tapered insulation solutions, designed to provide a fall on flat roofs, ensuring efficient drainage and thermal performance.
Selecting the Right Product
When selecting the appropriate flat roof insulation, consider:
- Thermal Requirements: Ensure the product meets the thermal resistance needed for your project.
- Application Area: Consider the size and specifics of the area being insulated. Some products are better suited for large open areas, while others are designed for targeted applications.
- Building Regulations: Ensure compliance with local building regulations and standards.
Rated Excellent



