For the thermal insulation of flat roofs.

Description

Polyfoam Roofboard is a high performance, 100% ozone friendly, extruded polystyrene, rigid board insulation. It is lightweight, yet has excellent structural strength and long term effectiveness.

Polyfoam Roofboard is available in three grades:

• Standard – Light to occasional maintenance traffic loads
• Extra – Consistent loading and plant loading, pedestrian traffic loads
• Super – Very high loading, car parking and heavy traffic loads

Polyfoam Roofboard is supplied with interlocking rebated edges. Polyfoam Foil Faced Roofboard is supplied for single ply membrane roofs where a separation layer is required.

Application

Polyfoam Roofboard is used for the thermal insulation of flat roofs.

Polyfoam Roofboard can be used:

• in a warm roof construction below single ply membranes – note that Foil Faced Roofboard should be used below PVC membranes
• in a protected membrane roof below ballast or paving slabs⁽¹⁾
• as the insulation layer in a green/garden roof
• under concrete for a roof top car park

⁽¹⁾ See also Polyfoam Slimline membrane. When used in conjunction with the Polyfoam Slimline membrane as part of the Polyfoam Slimline system, this solution offers industry leading thermal performance and weight reduction in protected membrane roofing systems.

Standards

Polyfoam Roofboard is manufactured in accordance with BSI Quality Assurance Standard BS EN ISO 9001: 2000.

Thermal Performance

The thermal conductivity of Polyfoam Roofboard varies between 0.029 W/mK and 0.034 W/mK.

Certification

Polyfoam Roofboard Standard, Extra and Super are certified by BBA Certificate 90/2424.

Durability

The continuous service temperature limits of Polyfoam Roofboard are -50 to +75º C.

Environmental

Polyfoam Roofboard is free from CFCs, HCFCs and any other material with ozone depletion potential in its manufacture and content and represents no known threat to the environment. Polyfoam Roofboard is non bio-degradable.

Polyfoam Roofboard is 100% recyclable.

Compression resistance

Polyfoam Roofboard is highly resistant to compression and withstands both occasional and long term static loads. A factor of safety for design loads of 3 (5 for long term static loads) is applied to the compressive strength of the product as outlined in the product data tables above.

Vapour Resistivity

Polyfoam Roofboard Standard has a vapour resistivity of 480 MNs/gm. Polyfoam Roofboard Extra andSuper have a water vapour resistivity of 600 MNs/gm.

Moisture absorption

Polyfoam Roofboard has a moisture absorption of 0.3% by volume.

Moisture resistance

Polyfoam Roofboard can be used above the waterproofing layer and thus exposed to rainwater. The board is resistant to moisture absorption and can be laid in standing water or up against wet concrete with negligible impact on the performance of the product.

Handling and storage

The boards are easy to handle and nonirritant. No special protective clothing is required when installing them.

Polyfoam Roofboard is supplied in polythene packs, labelled with identifying product and manufacturing data.

Ensure the boards are not stored close to open flame or other ignition source, also avoid volatile compounds and chemicals such as solvents.

Polyfoam products should not be left exposed to prolonged sunlight as this will result in surface degradation. Where outside storage for extended periods is required cover with opaque/light coloured sheeting.

Product Data

Polyfoam Roofboard Standard

⁽¹⁾ Design loads by calculated methods. All dimensions are nominal.

Polyfoam Foil Faced Roofboard

⁽¹⁾ Design loads by calculated methods. All dimensions are nominal.

Polyfoam Roofboard Extra

⁽¹⁾ Design loads by calculated methods. All dimensions are nominal.

Polyfoam Roofboard Super

⁽¹⁾ Design loads by calculated methods. All dimensions are nominal.