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FLAT ROOF APPLICATION GUIDE

FLAT ROOF APPLICATION GUIDE

Product catalog summary

Overview: The document is an application guide for flat roofs, focusing on the HARDROCK® Multi-Fix (DD) roofing system. It addresses the challenge of meeting acoustic requirements while providing cost-effective insulation for curved surfaces.

Contents: The guide includes sections on various roofing systems such as mechanically fixed, partially bonded, fully bonded single ply systems, torch applied multi-layer bituminous systems, liquid applied waterproof systems, green roof systems, and tapered roofing systems. It also covers ancillaries like acoustic membranes and technical overviews of acoustic, fire, and thermal performance.

HARDROCK® Multi-Fix (DD): This section describes the product as a dual-density roof board offering thermal, sound, and fire safety. It is easy to install, cost-effective, and compatible with various flat roof systems. The product is available in multiple thicknesses and provides significant time and cost savings.

Mechanically Fixed Single Ply System: This system is ideal for fast-track building programs and offers reduced installation time and cost. It provides excellent acoustic and fire resistance.

Partially Bonded Single Ply System: This system improves aesthetic appearance and is suitable for complex geometries. It offers high wind uplift resistance and is compatible with various membranes and adhesives.

Fully Bonded Single Ply System: This system is suitable for areas like swimming pools and sports halls. It offers high wind uplift resistance and excellent acoustic and fire resistance.

Torch Applied Multi-layer Bituminous System: Suitable for new-build and refurbishment projects, this system provides robust waterproofing and excellent sound reduction.

Technical Overview: The guide provides detailed specifications for each system, including dimensions, thickness, facing, core material, and thermal conductivity.

Installation Guidelines: Each system includes specific installation instructions to ensure proper application and performance.

Conclusion: The HARDROCK® Multi-Fix (DD) system offers a versatile and efficient solution for flat roof applications, meeting various performance requirements while being cost-effective and easy to install.

Specifications: The product dimensions are 1200mm x 1000mm with thicknesses ranging from 50mm to 185mm. It has a thermal conductivity of 0.039 W/mK and is manufactured without blowing agents, ensuring a zero ODP and GWP rating.

Installation Procedures:

Liquid Membrane Systems: Ensure the deck is clean and dry. The vapour control layer should be bonded or loose laid with overlaps of at least 150mm. The insulation boards are bonded using proprietary adhesives, with staggered joints and tightly butted edges.
Green Roof Systems: Similar preparation as liquid systems, with additional layers for waterproofing and filtration. The fleece, filtration layer, and growing matter are installed as per client requirements.
Tapered Roofing Systems: Designed to prevent water ponding, these boards can be bonded or mechanically fastened. The installation follows similar guidelines with specific attention to the gradient and fixing methods.
Recovery Boards: Used for refurbishment, these boards are mechanically fixed or bonded to existing surfaces, providing a platform for new waterproofing membranes.

Performance:

Acoustic: The product offers Class C sound absorption and can be enhanced with additional acoustic layers.
Thermal: Provides excellent thermal insulation, reducing energy usage and costs.
Fire Resistance: Classified as non-combustible with a European ‘reaction to fire’ classification of A1, offering high fire protection.

Handling and Storage: Boards are palletised and wrapped for protection during transit. For long-term storage, they should be kept under a waterproof covering and stacked no more than two pallets high.

Handling and Safety: The document emphasizes the importance of using a pallet fork for lifting pallets to roof level and providing adequate temporary protection above installed boards to prevent damage from various activities.

ROCKWOOL Rock Roller Trolley: A specialized trolley, the Rock Roller, is recommended for moving HARDROCK® Multi-Fix (DD) roofing boards efficiently. It comes with operating instructions for contractors.

Design Considerations: The design of flat roofs should comply with BS 6229 standards. For profiled metal decks, boards should be laid at right angles to the profiles, with specific guidelines for butt joints, free spanning, and cantilevering.

Walkways and Access Areas: A supporting layer is recommended in high foot traffic areas during and after installation. Consultation with the membrane manufacturer is advised for options.

Additional Roof Loads: Roof-mounted equipment should ideally be placed on independent upstands. If placed directly on the roof, additional protection may be needed, and advice should be sought from ROCKWOOL and the membrane manufacturer.

Preparation for Refurbishment: The existing roof must be sound and watertight. Unsuitable surfaces should be removed, and levels checked to ensure adequate falls.

Standards and Approvals: HARDROCK® Multi-Fix (DD) boards are assessed by the British Board of Agrement and comply with UEAtc guidelines. They are classified for pedestrian traffic and frequent maintenance.

Health and Safety: ROCKWOOL mineral wool complies with REACH regulations and poses no hazardous classifications.

Environmental Considerations: ROCKWOOL insulation is made from renewable resources, is recyclable, and does not contain harmful gases. It contains 25-50% recycled content.

Contact Information: For more details, visit the ROCKWOOL website or contact their technical solutions team.

Catalog excerpts

Flat Roof Application Guide

Open the catalog to page 1

Worle Community School, Weston Super-Mare The challenge was to ensure the roof complied with the strict acoustic requirements of BB93, whilst proving a cost effective insulation solution for the roof’s curved surface. A comprehensive thermal, sound and fire safe solution Image Credit: GSS Architecture.

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Contents HARDROCK® Multi-Fix (DD). . . . . . . . . . . . . . . . . . . . . . . . . . 4 Applications Mechanically Fixed Single Ply System. . . . . . . . . . . . . . . . . . 6 Partially Bonded Single Ply System . . . . . . . . . . . . . . . . . . . 8 Fully Bonded Single Ply System . . . . . . . . . . . . . . . . . . . . . 10 Torch Applied Multi-Layer Bituminous System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Liquid Applied Waterproof System. . . . . . . . . . . . . . . . . . . 14 Green Roof System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Tapered...

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HARDROCK® Multi-Fix (DD) ROCKWOOL HARDROCK® Multi-Fix Dual Density (DD) roof board is a comprehensive thermal, sound and fire safe solution, which has been specifically developed for use on all flat roof building types. Simple and quick to install, HARDROCK® Multi-Fix (DD) roof boards offer significant time and cost savings which support in reducing the total installed cost of the roof system. One Solution, Many Applications HARDROCK® Multi-Fix (DD) is supplied in a standard range with eight thickness options, which either individually or combined, can deliver a thermal performance ranging from...

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One solution, many applications Glass mineral fibre fleece - compatible with many membranes Dual density technology allows for robust outer surface which means our slabs are strong and durable Mechanically Fixed Single Ply System Fully Bonded Single Ply System Partially Bonded Single Ply System Torch Applied Multi-layer Bituminous System Green Roof System Liquid Applied Waterproof System Tapered Roofing System HARDROCK® Multi-Fix Recovery Board

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Mechanically Fixed Single Ply System Single Ply Membrane 150mm HARDROCK® Multi-Fix (DD) Underlay Structural Metal Deck HARDROCK® Multi-Fix (DD) roofing boards are perfect for mechanically fastened single-ply and EPDM systems. With only one fixing needed for each board, HARDROCK® Multi-Fix (DD) reduces both installation times and overall cost. What’s more, it also helps reduce thermal bridging and offers outstanding acoustic and fire resistance performance. Typical Applications Mechanically Fixed Single Ply Systems like HARDROCK® Multi-Fix (DD) are ideal for fast-track building programmes including...

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Mechanically Fixed Product Specification Dimensions Thickness Facing Core Thermal Conductivity (λ) 1200mm x 1000mm 50mm-185mm Mineral Glass Fibre Fleece High Performance Dual Density Stone Wool 0.039 W/mK he metal deck should be clean, dry and have a sufficient gradient to allow rainwater to flow T to the outlets suitable vapour control layer should be loose laid above the metal deck ensuring that the A sides and ends are overlapped by a minimum of 150mm he vapour control layer should be turned up at the roof edge to a height which is appropriate T to the waterproofing membrane n dual layered...

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Partially Bonded Single Ply System Single Ply Membrane 150mm HARDROCK® Multi-Fix (DD) Underlay Structural Metal Deck Adhered single ply systems can improve the aesthetic appearance of the finished membrane and also help to manage complex geometry. With its integral glass mineral fibre facing, HARDROCK® Multi-Fix (DD) provides a compatible surface for bonding single ply membranes like these. It has gone through full dynamic wind uplift testing in accordance with EOTA TR005 and offers high wind uplift resistance. It also offers superb acoustic and fire resistance performance, and is fully compatible...

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Product Specification Partially Bonded Dimensions Thickness Facing Core Thermal Conductivity (λ) 1200mm x 1000mm 50mm-185mm Mineral Glass Fibre Fleece High Performance Dual Density Stone Wool 0.039 W/mK he metal deck should be clean, dry and have a sufficient gradient to allow rainwater to flow T to the outlets suitable vapour control layer should be loose laid above the metal deck ensuring that the sides A and ends are overlapped by a minimum of 150mm he vapour control layer should be turned up at the roof edge to a height which is appropriate T to the waterproofing membrane n dual layered systems,...

Open the catalog to page 9

Fully Bonded Single Ply System Single Ply Membrane 150mm HARDROCK® Multi-Fix (DD) Underlay Structural Metal Deck Fully adhered insulation and single ply systems can improve the aesthetic appearance of the finished membrane and also help to manage complex geometry. Fully bonded HARDROCK® Multi-Fix (DD) systems have undergone full dynamic wind uplift testing in accordance with EOTA TR005 and offer high wind uplift resistance. Compatible with a wide range of membranes and adhesives, they offer fast installation and have excellent acoustic and fire resistance performance. HARDROCK® Multi-Fix (DD)...

Open the catalog to page 10

Product Specification Dimensions Thickness Facing Core Thermal Conductivity (λ) 1200mm x 1000mm 50mm-185mm Mineral Glass Fibre Fleece High Performance Dual Density Stone Wool 0.039 W/mK Fully Bonded he metal deck should be clean, dry and have a sufficient gradient to allow rainwater to flow T to the outlets suitable vapour control layer should be bonded to the metal deck in accordance with the A manufacturer’s instructions ides and ends of the vapour control layer should be overlapped by a minimum of 150mm S he vapour control layer should be turned up at the roof edge to a height which is appropriate...

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Torch Applied Multi-layer Bituminous System Torch Applied Bitumen Membrane 150mm HARDROCK® Multi-Fix (DD) Underlay HARDROCK® Multi-Fix Angle Fillet Ideal for both new-build and refurbishment projects, modified bitumen membranes provide a robust waterproof layer and fast installation. HARDROCK® Multi-Fix (DD) is designed for this type of roofing and provides excellent heat resistance and a strong bond between membrane and insulation. It comes with an integral glass mineral fibre facing, which provides a very compatible surface for direct torch applied bitumen felt. Typical Applications When used...

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FLAT ROOF APPLICATION GUIDE

FLAT ROOF APPLICATION GUIDE

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