Flat Roof Warm Roof Construction Detail

A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

Flat roof warm roof construction detail.

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. 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. In the warm flat roof construction there is insulation packed into every possible space where air can flow. 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. Flat roof details and information relating to insulating a flat roof. 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. 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. Steve from london flat roofing explains how warm flat roof. Depending on the type of roof you are considering here s some technical details you may find useful. If insulation is installed below the flat roof deck this is called a cold roof.

Others would treat even steeper pitches as flat roofs. Details both in 2d and 3d to give a clear understanding. It is usually the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction. Flat roof types.

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. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. The membrane is then attached to the insulation. 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.

A note to consider before construction. A warm flat roof is formed by placing a layer of insulation over the top of the roof structure. Types of flat roof construction warm and cold flat roofs. It must provide adequate protection against the elements keeping the buildings structure and interior dry.

In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm.