Warm Deck Roof Built Up

The sandwich warm deck roof is the most common type of flat roof.

Warm deck roof built up.

There are three recognised designs of flat roof construction. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. In principle this keeps the structural deck usually trapezoidal steel or timber at more or less the same temperature as the inside of the building. The insulation is immediately below the waterproofing layer.

Inverted warm deck roof. In a warm roof construction the principal thermal insulation layer is located above the structural decking resulting in the structural deck and support structure being at a temperature close to that of the interior of the building. The recognised flat roof build ups for best design practices are. There are two forms of warm deck roof.

Types of warm deck roof. The insulation can be adhered mechanically fixed or loose laid. A warm flat roof or a built up roof bur is one where all the insulation is above the joists deck making them part of the warm fabric of the building. In terms of the thermal design of a flat roof what are the options and the best practices of flat roof build ups.

In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately. Cold flat roofs are typically avoided as you d need to install ventilation which can prove problematic for many reasons relating to. The vapour control layer is above the decking but below the insulation. Warm cold and inverted.

In a warm roof construction the sarnafil membrane and sarnatherm thermal insulation is installed above the structural decking.