Warm Deck Flat Roof Construction Detail

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.

Warm deck flat roof construction detail.

There are two forms of warm deck roof. This is placed over the. Nhbc recommend that this type of roof be considered as the standard form of construction. Types of warm deck roof.

When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. The sandwich warm deck roof is the most common type of flat roof. With the warm roof deck. Others would treat even steeper pitches as flat roofs.

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. 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. Flat roof details and information relating to insulating a flat roof.

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. The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible. 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. Depending on the type of roof you are considering here s some technical details you may find useful.

Waterproof membrane to prevent water penetrating the structure and interior of the building. In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required. 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.