Warm Deck Flat Roof Build Up

There are two forms of warm deck roof.

Warm deck flat roof build up.

In the case of a flat roof insulation is usually either a rigid board above the deck or a mineral glass wool quilt immediately. In a warm roof the thermal insulation is immediately below the membrane finish. The recognised flat roof build ups for best design practices are. There should be no insulation below the deck and no ventilation is required.

Inverted warm deck roof. Warm deck sandwich or cold deck. Types of warm deck roof. Warm flat roof fully packed with insulation to prevent any condensation build up where insulation above the roof void allows the air underneath to stay warm avoiding condensation but also allows for an air flow should one be deemed to be required through the joists.

A flat roof where the insulation sits below the waterproof membrane and above the structural deck is a warm roof deck. Flat roofs there are two common forms of construction for flat roofs. The vapour control layer is above the decking but below the insulation. Warm deck roof with this type of roof the insulation is placed above the roof deck but below the weatherproofing.

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. Condensation control is achieved by using a vapour control layer vcl on the warm side of the insulation. In terms of the thermal design of a flat roof what are the options and the best practices of flat roof build ups. 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.

The insulation is immediately below the waterproofing layer. The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck. Cold flat roofs are typically avoided as you d need to install ventilation which can prove problematic for many reasons relating to. A warm roof deck is the most common and most preferred type of flat roof build up in the uk.

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