How To Build A Warm Deck Flat Roof

Flat roof construction can come in the form of a warm roof or cold roof depending on the requirement of the owner and architect as they relate to the building regulations regarding heat loss and insulation.

How to build a warm deck flat roof.

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. Steve from london flat roofingexplains how warm flat roof construction works in this excellent short video. In addition you will still need tools such as a measuring tape drill and utility knife along with the following.

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. Warm roof designing buildings wiki share your construction industry knowledge. The battening and tiling is then fixed down over. This is as opposed to a cold roof in which the insulation is below or within the roof.

The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. This will give additional stability to the roof structure. 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. 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.

Warm deck flat roofs can be constructed on most modern construction material types such as concrete timber and timber based sheets. Types of flat roof construction warm and cold flat roofs. In terms of the thermal design of a flat roof what are the options and the best practices of flat roof build ups. This results in the structural deck and its supports being at a temperature closer to that of the building s interior.

In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately. On flat roofs a warm roof is one in which the insulation layer is laid on top of roof structure.