How To Build A Warm Deck Flat Roof

Steve from london flat roofingexplains how warm flat roof construction works in this excellent short video.

How to build a warm deck flat roof.

This is as opposed to a cold roof in which the insulation is below or within the roof. Pitch roof u value 0 16 w m2k 2 warm deck pitched roof the insulation is placed over the rafters and then a felt is placed on top. Types of flat roof construction warm and cold flat roofs. The recognised flat roof build ups for best design practices are.

Roofing timber steel joists plywood exterior covering such as epdm or modified bitumen water based adhesive foam with fibreglass backing insulation warm flat roofing. 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. On flat roofs a warm roof is one in which the insulation layer is laid on top of roof structure. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.

Warm deck flat roofs can be constructed on most modern construction material types such as concrete timber and timber based sheets. A warm flat roof is formed by placing a layer of insulation over the top of the roof structure. For additional stability you can also use steel joists that are built into one or both of the walls. To use epdm for a warm deck flat roof construction solid closed cell roof insulation such as kingspan or celotex should be placed on top of the roof deck rather than in between the rafters.

In addition you will still need tools such as a measuring tape drill and utility knife along with the following. This results in the structural deck and its supports being at a temperature closer to that of the building s interior. Warm roof designing buildings wiki share your construction industry knowledge. In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately.

The battening and tiling is then fixed down over. This will give additional stability to the roof structure.