Warm Deck Roof Built Up

A flat roof where the insulation sits below the waterproof membrane and above the structural deck is a warm roof deck.

Warm deck roof built up.

The sandwich warm deck roof is the most common type of flat roof. The vapour control layer is above the decking but below the insulation. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately.

The insulation is immediately below the waterproofing layer. Inverted warm deck roof. In terms of the thermal design of a flat roof what are the options and the best practices of flat roof build ups. A warm roof deck is the most common and most preferred type of flat roof build up in the uk.

In a warm roof the thermal insulation is immediately below the membrane finish the structural deck any voids and the ceiling are at a temperature close to that of the building s interior condensation control is achieved by using a vapour control layer vcl on the warm side of the insulation. There are three recognised designs of flat roof construction. 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 principle this keeps the structural deck usually trapezoidal steel or timber at more or less the same temperature as the inside of the building. Warm cold and inverted.

The recognised flat roof build ups for best design practices are.