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Key features & benefits

Protects. Conserves. Endures.

DensDeck Prime spreads the load and protects the boards underneath. It therefore often pays, from a life-cycle cost perspective, to protect the insulation boards with DensDeck Prime cover board.

An added measure of protection

With a compressive strength of more than 3000 kPa (10 to 15 times that of a normal PIR insulation board), DensDeck Prime cover board adds structural strength to the entire roofing system and helps to absorb the effects of hail, worker traffic and other potentially damaging impacts. Adding a DensDeck Prime cover board over a mineral wool insulation at least doubles the load capacity.

Outstanding fire performance qualities

DensDeck Prime is an exceptional fire and thermal barrier due to the non-combustible core and inorganic facer. Fire performance of the DensDeck Prime board has been evaluated using various test standards:

  • ASTM E 136: board is classified as non-combustible
  • ASTM E 84: flame spread 0 - smoke development 0
  • Factory Mutual (FM) and UL approved
  • EN 13501-1, Class 1