Warm Roof Construction Flat Roof Details

The construction of the flat roof is similar to that of the timber upper floor.

Warm roof construction flat roof details.

Warm roof systems. Nhbc recommend that this type of roof be considered as the standard form of construction. For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow. The sandwich warm deck roof is the most common type of flat roof.

This usually keeps the deck warm. Others would treat even steeper pitches as flat roofs. Hot tar and gravel. It is the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction.

In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm. Warm cold and inverted. There are three recognised designs of flat roof construction. The 3 most common materials used for flat roof construction.

They can be built up from profiled metal decks as the insulation selected would provide enough rigidity to span the open sections of such decks. Warm roof build ups can be installed on most modern construction material types such as concrete timber and timber based sheets. In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off.

Types 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. This video shows detailed drawing. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.

There are two forms of warm deck roof. Details both in 2d and 3d to give a clear understanding. Hopefully this video will help explain the difference between warm flat roof construction and cold flat roof construction. Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls.

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. In the case of a flat roof insulation is usually in the form of either a rigid board above the deck or a fibrous quilt immediately above the ceiling depending on the type of roof construction.