HARDROCK Multi-Fix (DD) Flat Roof Insulation Board

Designed for warm flat roofs, ROCKWOOL HARDROCK Multi-Fix (DD) is a high-density, non-combustible thermal insulation board that has also been tested for acoustic applications and fire resistance.

ROCKWOOL HARDROCK Multi-Fix (DD) has been proven to improve the ability of lightweight flat roof systems to control both noise ingress and egress through the building envelope.

Suitable for areas subject to pedestrian traffic and frequent maintenance, the boards are compatible with all roof covering types, including torch-on, pour-and-roll, single-ply, EPDM, liquid-applied and green roofs.

Available as 1200 x 1000mm boards in 4 different thicknesses. Please choose the thickness required from the dropdown menu.

Standards and Certification

• Product standards: BS EN 13162, ISO 14001
• CE Marking: CE Marked
• BBA Approved: Certificate 21/5878
• LPCB Certified (LPS 1181: Part 1 Ext A): Certificate 022e

Technical Properties

• Reaction to fire (Euroclass): A2-s1,d0 (BS EN 13501-1)
• Fire resistance: Up to 120 minutes
• Thermal conductivity: 0.039 W/mK
• Water vapour resistance: 5.9 MNs/gm