Flat Warm Roof Construction Detail

This usually keeps the deck warm.

Flat warm roof construction detail.

Depending on the type of roof you are considering here s some technical details you may find useful. This is placed over the. Flat roof details and information relating to insulating a flat roof. Joists are placed on edge spaced at 400 600mm centres supported by external and internal load bearing walls.

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

The construction of the flat roof is similar to that of the timber upper floor. Flat roof types. It must provide adequate protection against the elements keeping the buildings structure and interior dry. There are several methods and materials for the design of the exterior surface of a warm or cold flat roof.

Warm roof systems. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. Details both in 2d and 3d to give a clear understanding. It is the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction.

Others would treat even steeper pitches as flat roofs. 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. For that reason cold flat roof construction needs to keep in mind the need for unblocked airflow.

The 3 most common materials used for flat roof construction. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less. 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. A flat roof must be strong durable and stable throughout its lifetime.