Warm Deck Flat Roof Construction Detail

Waterproof membrane to prevent water penetrating the structure and interior of the building.

Warm deck flat roof construction detail.

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. Details both in 2d and 3d to give a clear understanding. 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. Depending on the type of roof you are considering here s some technical details you may find useful.

The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible. Others would treat even steeper pitches as flat roofs. There are two forms of warm deck 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.

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. Flat roof details and information relating to insulating a flat 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. Nhbc recommend that this type of roof be considered as the standard form of construction.

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

In the warm flat roof construction there is insulation packed into every possible space where air can flow. Types of warm deck roof. With the warm roof deck.