Flat Warm Roof Insulation

For a 1 inch board equivalent of 6 r value.

Flat warm roof insulation.

You can expect to pay about 55 100 sq ft. Warm flat roofs do not need to be ventilated as the insulation is above the structure. The recognised flat roof build ups for best design practices are. If you live in a warm climate you require a lower r value.

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. A flat roof where the insulation sits below the waterproof membrane and above the structural deck is a warm roof deck. They lose loads of heat and are prone to leaking causing the materials to deteriorate. Cold flat roofs are typically avoided as you d need to install ventilation which can prove problematic for many reasons relating to space labour costs etc.

The format of house insulation you need depends on where you put it and if you need to control. Cold areas require a higher r value like an r 49. Unfortunately too many dwellings suffer from this problem. The insulation material for a warm flat roof should.

With a warm roof the insulation is installed on top of the existing surface rather than in between the rafters. The insulation for a warm roof will usually be boards of extruded polystyrene or rigid compressed boards of glass fibre or rock fibre. Increase your r value by layering insulation. Layer more insulation over the old for more effectiveness.

The insulation is immediately below the waterproofing layer. 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. Warm roofs offer a superior thermal performance and therefore come with a higher cost. A warm flat roof is defined by where the roof insulation is installed which is always above the roof deck.

It is top quality and the most cost effective product for your flat roof. Flat roofs for example on extensions bathrooms and dormer windows are not the best of ideas. 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. While expensive the best insulation is polyiso rigid foam.

We recommend having at least 20 r value worth of material for optimal energy efficiency. The vapour control layer is above the decking but below the insulation. Warm deck flat roof insulation is now the standard way to insulate a flat roof click to enlarge. 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.