Warm Deck Flat Roof Design

Flat roof design guide.

Warm deck flat roof design.

The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. Warm cold and inverted. Warm flat roof designs. Traditionally flat roofs simply consisted of a structural timber deck with a waterproof covering directly applied to the top of the deck.

This design dates back many years and flat roof insulation was somewhat of an afterthought with this type of 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. Where a cold flat roof does incorporate insulation this is in the form of mineral wool. On flat roofs a warm roof is one in which the insulation layer is laid on top of roof structure.

The recognised flat roof build ups for best design practices are. This results in the structural deck and its supports being at a temperature closer to that of the building s interior. 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. It is most important to note the vapour barrier must be a continuous vapour barrier with no puncture points.

Warm roof designing buildings wiki share your construction industry knowledge. In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately above the underdrawn ceiling depending on the type of roof design and construction. Types of warm deck roof. There are three recognised designs of flat roof construction.

This is why warm flat roof designs are commonly regarded as the preferred and more effective design. This is as opposed to a cold roof in which the insulation is below or within the roof. In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required. The sandwich warm deck roof is the most common type of flat roof.

In this article we discuss the pros and cons of both roof designs. The warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible.