185mm Rockwool Hardrock Multi-Fix DD

Rockwool HardRock Multi-Fix (DD) is a premium high-density, non-combustible thermal insulation board engineered for warm flat roofs. Extensively tested for superior acoustic performance and fire resistance, this product delivers exceptional results.

This 185mm Hardrock Multi-Fix insulation board strengthens lightweight flat roof insulation systems by managing sound transmission and reducing noise penetration through the building envelope.

Perfect for roofs subject to foot traffic and regular upkeep, these 185mm Rockwool Hardrock boards work seamlessly with all roof covering types, from torch-on and bitumen systems to single-ply, EPDM, liquid-applied, and green roof installations.

Product specification

• Thickness: 185mm
• Width: 1000mm
• Length: 1200mm
• Pallet Quantity: 6
• Pallet Coverage: 7.20m2
• Density: 160kg/m3
• Weight/m2: 9.6kg
• Weight: 230.4kg
• Thermal Conductivity: 0.039W/mK
• R-Value: 1.54m2K/W
• Fire Rating (Reaction to Fire): A1(Non-combustible)
• Application: Primary base layer for all systems
• Applications: Torch applied, pour and roll bitumen, single ply and EPDM mechanical or adhered systems, liquid applied systems and green roof

This stone wool insulation board features a mineral-coated white fleece surface, making it fully compatible with adhered and mechanically fixed waterproofing solutions, including bitumen, single-ply, EPDM, liquid membranes, and green roof systems.

Key features include:

• Zero smoke hazard with no contribution to fire development at any stage, including during fully developed fires.
• Non-combustible classification under UK building regulations, meeting Zurich School and Academy Design guide standards and HTM05-03 healthcare guidance.
• LPCB approved at the highest level, LPS1181: Part 1 EXT – A rated constructions.
• Outstanding acoustic reduction, absorption, and impact (rain noise) performance.
• Complies with BB93 (Education) and HTM08-01 (Healthcare) acoustic standards.
• Acoustic solutions deliver additional BREEAM credits.
• Maintains dimensional stability.
• Reliable thermal performance without blowing agents, featuring zero ODP and GWP.
• Fully recyclable and reprocessable, minimising landfill impact and reducing costs.

Applications

185mm Rockwool Hardrock Multi-Fix roofing boards perform excellently with these roofing systems:

• Fully bonded, partially bonded, and mechanically fastened single-ply membrane systems, plus EPDM membrane systems.

• Torch-applied, bitumen-based, and mastic asphalt built-up systems.

• Liquid-applied systems.

• Green roof systems.

• Rockwool Acoustic Membrane is a high-density polymer mass layer that, when combined with HardRock Multi-Fix (DD), offers enhanced acoustic performance for the highest specifications.

• Rockwool insulation Acoustic Infills are tissue-wrapped, trapezoidal-shaped trough inserts designed to improve the acoustic absorption of perforated metal decks.

More Information on 185mm Rockwool Hardrock DD

• Manufacturer Link: 185mm Rockwool Hardrock Multi-Fix DD
• Browse our complete Rockwool Insulation range and refine by thickness or coverage using the filters on the left. For expert guidance on product suitability, quantity discounts, or detailed quotations, contact us on +4402038839057, email sales@insulationbee, or use Live Chat – we offer the best UK Rockwool Insulation prices.