Warm Flat Roof Insulation

A warm roof has the insulation above the structural deck which is thus kept warm.

Warm flat roof insulation.

While expensive the best insulation is polyiso rigid foam. Insulation in a warm roof the insulation for a warm roof will usually be boards of extruded polystyrene or rigid compressed boards of glass fibre or rock fibre. The insulation material for a warm flat roof should. The waterproof layer is above the insulation and a vapour control layer is placed below the insulation.

For a 1 inch board equivalent of 6 r value. In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately above the underdrawn ceiling depending on the type of roof design and construction. With a warm roof the insulation is installed on top of the existing surface rather than in between the rafters. We recommend having at least 20 r value worth of material for optimal energy efficiency.

A warm flat roof is defined by where the roof insulation is installed which is always above the roof deck. The vapour control layer is above the decking but below the insulation. As compared with a traditional flat roof installation this approach maintains a temperature within the roof area similar to that of the rest of the building interior. Flat roofs for example on extensions bathrooms and dormer windows are not the best of ideas.

You can expect to pay about 55 100 sq ft. They lose loads of heat and are prone to leaking causing the materials to deteriorate. One of the main benefits you will receive from installing a warm flat roof is condensation will not become an issue because of the positioning of the insulation. While warm flat roof design has become more popular to help achieve ever stringent thermal performance modern roof structures are often required to also provide a level of sound insulation and fire protection.

Flat roof there are two basic categories of roof design. The insulation is immediately below the waterproofing layer. Warm deck flat roof insulation is now the standard way to insulate a flat roof click to enlarge. Unfortunately too many dwellings suffer from this problem.

These are can be supplied with rebated edges which interlock reducing the risk of uplift. Warm roofs offer a superior thermal performance and therefore come with a higher cost. The great thing about a warm roof is that if your existing roof surface is in good condition you don t need to do much to it.