Warm Roof Construction Flat Roof Details

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.

Warm roof construction flat roof details.

It is the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof. Warm cold and inverted. 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.

When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls. 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. Warm roof systems.

Hot tar and gravel. Flat roof design guide. The 3 most common materials used for flat roof construction. The construction of the flat roof is similar to that of the timber upper floor.

There are two forms of warm deck roof. 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. For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow. This usually keeps the deck warm.

Nhbc recommend that this type of roof be considered as the standard form of construction. The sandwich warm deck roof is the most common type of flat roof. Others would treat even steeper pitches as flat roofs. In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm.

There are three recognised designs of flat roof construction. In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required. Types of warm deck roof. Flat roof details and information relating to insulating a flat roof.

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.