Hardrock Multi Fix DD
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HARDROCK® MULTI-FIX (DD) Non-combustible insulation for flat roofs.

HARDROCK® MULTI-FIX (DD) HARDROCK® Multi-Fix (DD) is a BBAapproved insulation board, that in addition to thermal comfort, provides independently-tested acoustic and fire resistance properties. Non-combustible Euroclass A2-s1, d0 and up to 2hrs fire resistance Sound reduction Excellent airborne, sound absorption and impact reduction performance Sustainable materials ROCKWOOL insulation is recyclable Long term stable thermal performance

ROCKWOOL HARDROCK® Multi-Fix (DD) is a stone wool insulation board faced with a mineral-coated white fleece, compatible with a wide range of adhered and mechanicallyfixed waterproofing systems - including bitumen, single-ply, EPDM and liquid membranes, as well as green roof systems. The product presents no smoke hazard, and will not contribute to fire growth in any stages of a fire (including the fully developed stage of a fire) The product is deemed to be non-combustible in accordance with UK building regulations complying with Zurich School and Academy Design guide and HTM05-03 guidance...

Typical applications HARDROCK® Multi-Fix (DD) roofing boards are compatible for use with the following roofing systems: • ully bonded, partially bonded, mechanically fastened single F ply membrane systems and EPDM membrane systems • orch applied, bitumen based and mastic asphalt built up T systems L • iquid applied systems • reen roof systems G ROCKWOOL Acoustic Membrane is a high density polymer mass layer that combines with HARDROCK® Multi-Fix (DD) to offer enhanced acoustic performance for the very highest specifications. ROCKWOOL Acoustic Infills are tissuewrapped trapezoidal shaped...

Product performance Thermal performance LPS 1208 Resistance to Fire test. HARDROCK® Multi-Fix roofing boards are the only insulation products to have achieved this classification, in respect of built-up warm flat roofing constructions. The thermal conductivity of HARDROCK Multi-Fix roofing boards is 0.039 W/mK (λ 90:90). Resistance to moisture ROCKWOOL products consist of randomly orientated water repellent fibres that prevent moisture from working its way into the board. Should any boards become wet during installation they should be allowed to dry out naturally, prior to applying the roof...

Acoustic performance ROCKWOOL has a unique in-house design capability to provide bespoke project specific rain noise calculations and can support with a comprehensive suite of absorption and sound attenuation test data. The service will support cost effective project design and help meet the Education acoustic requirements, BB93. Sound absorption Rain noise Reflected sound is often a problem experienced in most buildings, for example: Excessive noise from rain on a lightweight roof construction can result in noise radiating into the working ceiling or habitable space below. • chools S •...

Single ply/EPDM roofing - Systems Example 1 - Single layer system (Partial/fully bonded or mechanically fixed) System performance information Acoustic performance: 150mm Rw 41 dB airborne, LIA 51.9 dB rain noise Single ply/EPDM membrane Example room types & usage Primary/Secondary school classrooms (BB93) Acoustic performance: 185mm Rw 43 dB airborne, LIA 50.2 dB rain noise Vapour control layer Example room types & usage Music Room (BB93) Standard metal deck Example 2 - Dual layer system (Partial/fully bonded or mechanically fixed) System performance information Acoustic performance Rw 46...

Single ply/EPDM roofing - Systems Example 3 - Dual layer, perforated deck system (Partial/fully bonded or mechanically fixed) System performance information Acoustic performance Rw 41 dB airborne, LIA 49.0 dB rain noise Class C sound absorption Single ply/EPDM membrane Example room types & usage Sports Halls (BB93) Thermal performance 0.18 w/m2k 150mm HARDROCK® Multi-Fix (DD) Underlay Vapour control layer Acoustic infill Perforated D 60 Metal deck Example 4 - Single ply green roof (Partial/fully bonded or mechanically fixed) System performance information Acoustic performance: 150mm Rw 41...

Single ply/EPDM roofing - Fixing options Mechanically fastened single ply/ EPDM membrane systems Fully/partially adhered single ply/ EPDM membrane systems HARDROCK® Multi-Fix (DD) roofing boards are suitable for mechanically fastened single ply/EPDM systems. HARDROCK® Multi-Fix (DD) roofing boards are to be used with fully or partially adhered single ply/EPDM membranes. The fleece facing of the board encourages a strong bond between membrane and insulation whilst limiting the amount of adhesive needed. A single ply/EPDM membrane which has been tested and deemed compatible for bonding to...

Bitumen/mastic asphalt/green roof - Systems Example 1 - Single layer system (Mechanically fixed/torched or bonded bitumen) System performance information Acoustic performance Rw 42 dB airborne, LIA 50.2 dB rain noise High performance roofing felt/mastic asphalt Example room types & usage Primary/Secondary school classrooms (BB93) Acoustic performance with Acoustic Membrane 5kg Rw 44 dB airborne, LIA 46.7 dB rain noise Example room types & usage Sports Hall (BB93) Foil faced bitumen VCL Standard metal deck Example 2 - Dual layer system (Mechanically fixed/torched or bonded bitumen) System...

Bitumen/mastic asphalt/green roof - Systems Example 3 - Bitumen green roof system System performance information Acoustic performance: 150mm Rw 42 dB airborne, LIA 50.2 dB rain noise Example room types & usage Primary/Secondary classrooms (BB93) Green roof drainage system Acoustic performance: 185mm Rw 44 dB airborne, LIA 48.8 dB rain noise Loose filter protection fleece Specialist green roof single bitumen membrane All figures above exclude performance of green roof. Foil faced bitumen VCL Standard metal deck Typical U-values for Metal, Concrete and Timber decks based on standard HARDROCK®...

HARDROCK® Multi-Fix (DD) solutions Bitumen/Mastic asphalt/Green roof/Liquid membrane - Fixing options Built-up high performance bituminous membranes HARDROCK® Multi-Fix (DD) boards can be used below built-up bitumen roofing (bituminous felt or asphalt). Roof board installation For dual layered systems place the 150mm Multi-Fix Underlay down first and add the fleece faced Multi-Fix top board with the fleece facing upwards to receive the bitumen. For single layer systems, only the fleece faced Multi-Fix top board is required. The boards are to be laid staggered, tightly buttjointed and either...