Polyfoam Roofboard Extra - For thermal and structural insulation of medium traffic flat roofs
by Polyfoam XPS
For inverted and green roofs
Thermal
The declared thermal conductivity of Polyfoam Roofboard Extra is 0.033W/mK.
The design thermal conductivity in including moisture correction factor, of the boards, is 0.034W/mK for thicknesses 100mm. For thicknesses under 100mm it is 0.035W/mK.
Description
Polyfoam Roofboard Extra is a rigid extruded polystyrene (XPS) board with a low Global Warming Potential (GWP) and zero ozone depletion potential (ODP).
Polyfoam Roofboard Extra is a lightweight, lap jointed board with high compressive strength.
Polyfoam Slimline Zero Membrane is a high performance, thermally bonded tri-laminate of polypropylene; spunbonded (outer layers) and microporous (inner layer).
Benefits
Excellent thermal performance
15mm lap joint
High compressive strength
Highly resistant to water absorption
Able to resist repeated freeze/thaw cycles
Lightweight and easy to install
Tough and durable, not easily damaged
Dimensionally stable
Thermal performance of an inverted roof is improved when used in conjunction with Polyfoam Slimline Zero Membrane
Application
Polyfoam Roofboard Extra is used for the thermal insulation of a wide variety of flat roofs including:
in an inverted roof below ballast or paving slabs
in a green/garden roof
Environmental
Manufactured in the UK using a blowing agent with low global warming potential (GWP) and zero ozone depletion potential (ODP), Polyfoam XPS products are free from CFCs and HCFCs.
They have product specific Environmental Product Declarations (EPDs) and raw material procurement is certified to BES 6001 (Responsible Sourcing of Construction Products). Polyfoam Roofboard Extra is non bio-degradable and 100% recyclable.
Specification Details for Polyfoam Roofboard Extra - For thermal and structural insulation of medium traffic flat roofs (Insulation Boards)
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Polyfoam XPS is consulted before specifying.
Technical
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| Compressive Strength (?) | 0.3 N/mm2 | 70.77% |
| Freeze Thaw (?) | 1 % vol | |
| Long Term Water Absorption by Diffusion (?) | 1 % vol | |
| Long Term Water Absorption by Immersion (?) | 0.7 % vol | |
| Thermal Conductivity (?) | 0.033 W/mK | 50.38% |
| Water Vapour Resistance (?) | 625 MNs/g | |
Size & Weight
Materials & Finishes
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| Colour (?) | Orange | |
Sustainability
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| Recyclability (?) | 100 % | |
Certifications & Ratings
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| BBA Certificate Number (?) | 17/5454 | |
| Certifications (?) | BBA , BRE Certificate , BSI Kitemark , QA Certificate | |
| Reaction to Fire (?) | F | |
Commercial
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| Application (?) | Blue Roof , Conventional Warm Roof , Green Roof , Inverted roof | |
| Manufactured in the UK (?) | ||
| Typical Building Sector (?) | Construction , Domestic | |
Physical Properties
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| Edge Type (?) | Lap Joint | |
| Shape (?) | Rectangular | |
Environmental
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| Embodied Carbon - (Global Warming Potential - GWP) (?) | 121 | |
| Has Environmental Data (?) | ||
Other
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| Uniclass (?) | Pr_25_71_52 Mineral-based boards and sheets | |
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Latest news & updates for Polyfoam Roofboard Extra - For thermal and structural insulation of medium traffic flat roofs
by Polyfoam XPS 07-07-2023
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