Warm Roof Detail Flat Roof

With a warm roof the insulation is installed on top of the existing surface rather than in between the rafters.

Warm roof detail flat roof.

The sandwich warm deck roof is the most common type of flat roof. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. This usually keeps the deck warm. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.

Warm roofs have an insulation layer above the roof deck. The latter places insulation on top of the roof deck while the former puts it below typically between or underneath the roof joists. Due to the insulation being over the top of the roof the timber structure beneath is warm which is why the term warm roof is formed. 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.

Specifiers have traditionally chosen between two distinct types of flat roof construction. Warm roofs offer a superior thermal performance and therefore come with a higher cost. Inverted warm deck roof the insulation boards in an inverted warm deck are laid over the structural deck and the waterproof covering. A flat roof usually consists of the following.

It is the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction. Flat roof u value 0 18 w m2k 2 warm deck flat roof the type of insulation for this is. The major difference between the warm flat roof and the cold flat roof has to do with the air flow between the roofing timbers known as joists that help to hold up the roof. Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board.

Flat roof construction for residential. Waterproof membrane to prevent water penetrating the structure and interior of the building. In the warm flat roof construction there is insulation packed into every possible space where air can flow. A warm flat roof is formed by placing a layer of insulation over the top of the roof structure.

This usually keeps the deck warm. Depending on the type of roof you are considering here s some technical details you may find useful. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck.