Flat Roof Warm Roof Construction Detail

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.

Flat roof warm roof construction detail.

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 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. Others would treat even steeper pitches as flat roofs. It must provide adequate protection against the elements keeping the buildings structure and interior dry.

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. Depending on the type of roof you are considering here s some technical details you may find useful. 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. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.

Steve from london flat roofing explains how warm flat roof. In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm. So what is warm flat roof construction. The insulation is tapered to provide a fall to the roof to enable water to.

When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. 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. Flat roof types. A flat roof must be strong durable and stable throughout its lifetime.

In the warm flat roof construction there is insulation packed into every possible space where air can flow. A note to consider before construction. 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. The membrane is then attached to the insulation.

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. Types of flat roof construction warm and cold flat roofs. 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. Details both in 2d and 3d to give a clear understanding.

If insulation is installed below the flat roof deck this is called a cold roof.