How To Construct A Warm Deck Flat Roof

The concrete deck can offer greater speed of roof construction which is an important consideration on many larger commercial projects.

How to construct a warm deck flat roof.

The membrane is then attached to the insulation. In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm. Others would treat even steeper pitches as flat roofs. Types of flat roof construction warm and cold flat roofs.

A vapour control layer must be used below 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. This option avoids the requirement to ventilate the roof. That will help you remember certain factors and details to build the best possible flat roof.

To insulate a flat roof with a concrete deck we recommend a warm deck construction method where the vapour control layer is sandwiched between the concrete deck and a layer of rigid pir insulation boards. This is where the insulation is typically packed between the rafters. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible.

This approach uses insulation with no air gap either immediately above or below the roof deck. Insulation for the warm flat roof only the basic construction process. 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. A 50mm air gap must be left.

In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required. So called because the insulating layer is located above the roof rafters and between the structural supports a warm deck roof results in a temperature for the roof and loft area that is consistent with the rest of the.