Warm Deck Flat Roof Construction Detail

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.

Warm deck flat roof construction detail. The sandwich warm deck roof is the most common type of flat roof. Roof deck providing the base for the waterproof membrane and in some cases the insulation. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. 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.

Others would treat even steeper pitches as flat roofs. Nhbc recommend that this type of roof be considered as the standard form of construction. There are two forms of warm deck roof. Waterproof membrane to prevent water penetrating the structure and interior of the building.

Depending on the type of roof you are considering here s some technical details you may find useful. 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. In the warm flat roof construction there is insulation packed into every possible space where air can flow. 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.

In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required. 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. 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. Details both in 2d and 3d to give a clear understanding.

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. With the warm roof deck. This is placed over the.