Warm Deck Flat Roof Construction Detail

The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible.

Warm deck flat roof construction detail.

Nhbc recommend that this type of roof be considered as the standard form of construction. There are two forms of warm deck roof. In the warm flat roof construction there is insulation packed into every possible space where air can flow. The definition of a flat roof according to bs 6229 is having a pitch less than 10 o to the horizontal however some in the industry would consider up to 15 o as their definition of a flat roof.

Throughout the course of the year the roof deck and all below it is kept at a temperature close to that of the inside of the building therefore the roof structure is protected from extremes of hot and cold lessening the. In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required. Details both in 2d and 3d to give a clear understanding. With the warm roof deck.

Waterproof membrane to prevent water penetrating the structure and interior of the building. Flat roof u value 0 18 w m2k 2 warm deck flat roof the type of insulation for this is usually of a rigid type and the thickness will vary depending on the manufacturer s specifications. Roof deck providing the base for the waterproof membrane and in some cases the insulation. 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.

An inverted roof construction sees the principal thermal insulation layer located above the roof structure and also above the waterproofing this method results in the waterproofing the structural deck and the support structure all being at a temperature similar to that of the interior of the building. So called because the insulating layer is located above the roof rafters and between the structural supports a warm deck roof results in a temperature for the roof and loft area that is consistent with the rest of the. Types of warm deck roof. Construction studies drawing detail showing how to draw a flat roof warm deck construction detail to a scale of 1 10 with a short introduction highlighting t.

Depending on the type of roof you are considering here s some technical details you may find useful. Flat roof details and information relating to insulating a flat roof. Others would treat even steeper pitches as flat roofs.