The insulation is preventing from lifting by adding ballast.
The insulation effectively ‘protects’ the roof membrane from thermal stress, UV light and mechanical damage. In an inverted warm roof the insulation is placed above a combined VCL / waterproofing membrane. The waterproof covering is above the insulation and the vapour control layer is placed below the insulation. The roof deck is kept warm by placing the insulation above it. The choice of construction theoretically rests on two different methods of handling the moist air: Types of flat roof Warm Roof Part of the successful design of a flat roof is in preventing such a condition from occurring. In the case of a flat roof, moist warm air rises from the room below into the roofing fabric where it risks condensing on the underside of the roof decking/ waterproof membrane. A proper understanding of the link between thermal performance, air leakage and condensation is important to the successful design of a flat roof.Ĭondensation occurs when warm moisture-laden air comes into contact with a cold surface. Millions of pounds a year are spent on the refurbishment of flat roofing – from simply patching, re-coating / re-covering through to the more comprehensive stripping off and replacement of the entire roof.Īlong with leakage, flat roofs, particularly domestic scale timber roofs, are notoriously subject to the effects of condensation. With many years of experience working on both installation projects, as well as roof repair and maintenance of weathered or damaged felt flat roofs – we can assist with any issue. Our speciality is working with felt flat roofing systems. An integral part of Trinity Roofing’s business is to provide construction of flat roofs in Edinburgh.
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