Flat Warm Roof Design

The recognised flat roof build ups for best design practices are.

Flat warm roof design.

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. This results in the structural deck and its supports being at a temperature closer to that of the building s interior. Warm roof on flat roofs a warm roof is one in which the insulation layer is laid on top of roof structure. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.

In terms of the thermal design of a flat roof what are the options and the best practices of flat roof build ups. Types of flat roof construction warm and cold flat roofs. 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. 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.

Steve from london flat roofingexplains how warm flat roof construction works in this excellent short video. Main features warm flat roof design first off the warm flat roof design is an extremely basic direct and utilitarian design every single current trademark. Hot tar and gravel also known as the built up roof bur this type of flat roof features three or more layers of waterproof material mixed in an alternating fashion with hot tar and a layer of smooth stone like gravel. A warm flat roof is formed by placing a layer of insulation over the top of the roof structure.