Thermal-acoustic insulation HARDROCK® MULTI-FIX (DD) TAPERED
stone woolpanelfor flat roofs

thermal-acoustic insulation
thermal-acoustic insulation
thermal-acoustic insulation
thermal-acoustic insulation
thermal-acoustic insulation
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stone wool
for flat roofs, for green roofs
Technical characteristics
high-performance, fire-resistant, waterproof
Fire Class
Euroclass A2-s1-d0
recyclable, recycled, with waterproofing membrane
Thermal conductivity

0.039 W/(m.K)


1,200 mm (47 in)


1,000 mm (39 in)


Non-combustible tapered insulation for flat roofs. HARDROCK Multi-Fix (DD) Tapered is a BBA-approved insulation board, fabricated to a fall to provide drainage across a roof. ROCKWOOL HARDROCK Multi-Fix (DD) Tapered is a stone wool insulation board faced with a mineral-coated white fleece, compatible 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. To control reverberant noise beneath the roof, combine HARDROCK(R) with a perforated deck inlaid with ROCKWOOL Acoustic Infills. HARDROCK Multi-Fix (DD) is manufactured from volcanic stone, which produces a non-combustible Euroclass A2-s1, d0 insulation board. BBA approved Stone wool is dimensionally stable and will provide the same performance for more than 55 years after installation* Can be recycled and reprocessed, reducing landfill costs, with zero ODP and GWP


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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.