Rock Wool Hardrock Multi-Fix DD 85mm – 1200 x 1000mm – 18sq.m – 15 boards per pallet

£391.20
VAT included
£326.00 Ex Vat

Rockwool Hardrock Multi-Fix is a versatile flat roof insulation board which carries with it exceptional acoustic and fire resistance properties.

Quantity
2 – 3 Days Nationwide Pallet Delivery

Rockwool Hardrock Multi-Fix (DD) is a versatile flat roof solution which carries with it exceptional acoustic and fire resistance properties. Suitable for any building type.

Hardrock Multi-Fix is compatible with an array of flat roof systems including:

  • Single-Ply Mechanical and Adhered Systems
  • EPDM Mechanical and Adhered Systems
  • Green Roofs
  • Torch Applied
  • Pour and Roll Bitumen
  • Liquid membranes


Hardrock Multi-Fix (DD) has excellent acoustic properties and can be used in combination with Rockwool Acoustic Infill’s and Rockwool Acoustic Membrane to provide high performance, acoustic flat roof systems. In addition, Hardrock Multi-Fix (DD) is tested to the highest European fire classification and has also been tested to meet the highest LPCB standards.

Advantages of Rockwool Hardrock Multi-Fix DD

  • Achieves Euroclass A1 non-combustibility
  • Excellent acoustic reduction, absorption and impact performance
  • Dimensionally stable
  • A sustainable solution made from natural materials

Specification of Rockwool Hardrock

Length: 1200mm
Width: 1000mm
Thickness: 85mm
Coverage: 18 sq.m
Boards: 15 per pack
Compliance: BS EN 13162, ISO 14001
Reaction to fire: A1 (BS EN 13501-1)
Thermal conductivity: 0.039 W/mK
Water vapour resistance: 5.9 MNs/gm

Fire Performance

Product Thickness Range (mm) Grade Fire resistance integrity (mins)

Fleece faced - for mechanically fastened 
single ply external membranes

100-135 
140-205 
210
EXT-B & EXT-A60 
EXT-B & EXT-A90 
EXT-B & EXT-A120
60
90
120

Fleece faced Multi-Fix - for fully adhered 
single ply external membranes

100-135 
140-205 
210
EXT-B & EXT-A60 
EXT-B & EXT-A90 
EXT-B & EXT-A120
60
90
120

RW-HR-85
2019-08-23

Data sheet

Brand
Rockwool
Thickness
85mm
Width
1200mm
Length
1000mm
Thermal Conductivity
0.039 W/mK
Application Type
Multi Purpose Flat Roof Board
Coverage
18.00sq.m