Shaped heat insulation panels made of expanded polystyrene. It is available in various densities, and is laminated to an elastoplastomeric membrane.
Two sides of the board have step joints, to ensure perfect, stable positioning.
The system is fixed mechanically to the roof deck by self-tapping screws having large diameter washer.
The system is used for the refurbishment of galvanised steel roof decks, together with a cap sheet consisting of a mineral surfaced polymer bitumen membrane, fully bonded on the laminated membrane.