Roof Thermal Insulation/PEB Roof Insulation
Our combined thermal and duct insulation foam is built around a closed-cell XPE/XLPE core with a reflective aluminium foil facing on one or both sides, available with a pressure-sensitive adhesive backing for direct application onto sheet-metal HVAC ducts. The core blocks conductive and convective heat transfer while the foil reflects up to 95 percent of radiant heat, giving a thin, flexible insulation layer that also serves as a vapour barrier, controls surface condensation, and dampens duct-borne noise. The same construction works for over-deck and under-deck roof insulation, wall and partition insulation in industrial sheds and warehouses, pre-engineered building envelopes, and chilled or hot water pipe cladding. The material is dust-free, fibre-free, and odourless, and self-adhesive variants cut single-step installation time on duct runs.
Technical Specifications
| Construction | XPE/XLPE core with aluminium foil/alupet foil & metpet foil |
| Radiant reflectance | Up to 95 percent |
| Density | 25 ± 3 kg/m³ |
| Thickness | 3 to 12 mm single layer, up to 100 mm laminated |
| Width | Max 1500mm, can be customised |
| Colours | Grey, black, white or customised |
Applications
Common questions about Roof Thermal Insulation/PEB Roof Insulation
How much heat does foil-faced roof insulation actually reflect?
The aluminium foil facing reflects up to 95 percent of radiant heat. On a PEB or metal roof, radiant gain through the deck is the dominant load, which is why a reflective facing does more here than added thickness alone.
What thickness should I specify for a PEB roof?
Single layer runs 3 to 12 mm and laminated build-ups go to 100 mm. For most industrial sheds a 6 to 10 mm foil-faced sheet under the deck handles both the radiant load and the condensation risk. Send us the roof build-up and climate zone and we will size it.
Does it stop condensation on the underside of the roof?
That is one of its main jobs. The closed-cell core plus the foil facing forms a vapour barrier, so warm moist air inside the building does not reach the cold metal deck and drip back down.
What facings are available?
Aluminium foil, Alupet, and Metpet, over an XPE/XLPE core at 25 +/- 3 kg/m3. Colours are grey, black, white, or customised, in widths to 1500 mm.
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