Tapered HardRock® Multi-Fix (DD)

Non-combustible tapered insulation for flat roofs

ROCKWOOL HardRock® Multi-Fix (DD) Tapered is a BBA-approved stone wool insulation board, fabricated to provide a fall across a roof suitable for drainage and water management.

The product is faced with a mineral-coated glass fibre tissue which ensures compatibility with a wide range of adhered and mechanically-fixed waterproofing systems – including bitumen, single-ply, EPDM and liquid membranes, as well as green roof systems.

For ease of specification, HardRock Multi-Fix (DD) Tapered is backed by a complete design to delivery service.


Reaction to fire (Euroclass) A2-s1,d0
Thermal conductivity 0.039 W/mK
Water vapour resistance 5.9 MNs/gm
Product standards BS EN 13162, ISO 14001
CE Marking CE Marked
BBA Approved BBA approved (21/5878)

Related case studies

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Bristol Airport

We were delighted to work alongside single ply services and assist with the design and supply of 1289m2 of Tapered PIR scheme to Bristol Airport

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