PolyFoam XPS Roofboard Extra is a lightweight, high compressive strength extruded polystyrene (XPS) board. The Polyfoam Roofboard Extra is suitable for multiple flat roof applications including, inverted roofs ballast, paving slabs and green roofs.
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Polyfoam Roofboard Extra is a rigid but lightweight extruded polystyrene (XPS) board with high compressive strength and is used in conjunction with Polyfoam Slimline Zero Membrane as a Polyfoam Inverted Roof System.
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.
The continuous service temperature limit of Polyfoam Roofboard Extra is up to +70o C.