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Twin-Therm® Built Up Roof Cladding System

 Twin-Therm® is a built-up roof and wall cladding system that has led the market in many ways since 1997. When installed, the system is both Non-Fragile and fully walkable for the duration of its guaranteed life. Twin-Therm® delivers U-values as low as 0.14W/m²K, by increasing the depth of construction without the need for additional components. Air permeability tests on buildings featuring the system have measured as low as 0.52m³/hr/m². Twin-Therm® comes with a full system guarantee of up to 40 years. The entire system, and not only its constituent parts, has been independently verified and carries Agrément certification and the Loss Prevention Certification Board (LPCB) accreditation.

 

The system is both Non-Fragile and fully walkable for the duration of its guaranteed life with Class B Certification when tested for Non-Fragility in accordance with ACR(M)001:2014 "Test for Non-Fragility of Profiled Sheeted and large Element Roofing Assemblies (Fifth Edition)".

CA Building Products offers full system guarantees for up to 40 years on Twin-Therm®. This covers the manufacture and design of the entire system including all of the components (screws, sealants, insulation, spacers, etc). When the system is specified with Colorcoat HPS200 Ultra® 40 year Confidex® Guarantees are available.

The system delivers U-values as low as 0.14W/m²K by increasing the depth of construction without the need for additional components.

Tests on buildings featuring the system have measured as low as 0.52m³/hr/m² @50Pa helping to deliver Band A EPC ratings and a reduction in CO2 emissions.

The entire system (not just its components) has been independently verified and carries Agrément certification and Loss Prevention Certification Board (LPCB) accreditation.

Roof fasteners do not penetrate inside the building therefore any water ingress through failed external fixings will pass through the insulation to the liner panel and then dissipate/drain into the gutter.

Negate the need to put a flat flashing below the liner panel at the apex and eliminate reliance on fillers for protection by utilising a cranked ridge liner panel, installed over the adjacent sheets, to ensure continuity.

All of our roof systems have been designed and tested to be installed at roof pitches lower that 4°.

Twin-Therm® Quantum and Twin-Therm® Griffon curved roofs are available at no extra cost.

Twin-Therm® roof systems are available in a full range of pre-finished steel products including Colorcoat HPS200 Ultra® from Tata Steel.

Independent testing includes determination of weighted sound reduction, rain noise levels for standard systems and absorption coefficients when incorporating perforated lining panels.

The Therma-quilt insulation used in the system has every fibre coated with silicone to prevent moisture in the cavity from being absorbed. Instead water is shed to the liner where it is either dissipated or directed away from the building via the gutters.

Twin-Therm® has been tested by BRE Loss Prevention Certification Board to LPS 1181 Part 1 achieving "EXT-B" classification for the complete system. Therma-quilt insulation is a fibre wool product achieving Euroclass 'A1' (non-combustible) when tested in accordance with BS EN 13501-1.

Therma-quilt insulation is a fine, non-combustable glass mineral wool bonded with thermo-setting resin and is free from CFC, HCFC Volatile Organic Compounds (VOCs) and will not rot, degrade or sustain vermin. It also inhibits the growth of mould, bacteria and fungi.

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