Flat Roof Warm Roof Construction Detail

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Flat roof warm roof construction detail.

A flat roof must be strong durable and stable throughout its lifetime. 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. Depending on the type of roof you are considering here s some technical details you may find useful. Flat roof types.

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. It must provide adequate protection against the elements keeping the buildings structure and interior dry. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off.

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. 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. In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm. A warm flat roof is formed by placing a layer of insulation over the top of the roof structure.

The insulation is tapered to provide a fall to the roof to enable water to. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less. A note to consider before construction. Others would treat even steeper pitches as flat roofs.

The membrane is then attached to the insulation. This enables the temperature of the structure and the deck to be kept close to the temperature of the inside of the building hence warm. Generally roofers discourage this method for cold climates because it can promote condensation and requires ventilating the roof which may be difficult to do in small or tight spaces. In the warm flat roof construction there is insulation packed into every possible space where air can flow.

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. Steve from london flat roofing explains how warm flat roof. So what is warm flat roof construction. 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.

Types of flat roof construction warm and cold flat roofs.