Warm Deck Roof Construction

Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs.

Warm deck roof construction.

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. 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 can be adhered mechanically fixed or loose laid.

It can be difficult to provide a very high level of thermal performance in these roof types whether you re looking to insulate at joist level for a cold roof where joist depth can be an issue or above the roof deck where overall roof height may need to be considered if a warm roof construction is desired. 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. Warm roofs have an insulation layer above the roof deck. A cold deck roof is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch 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. The vapour control layer is above the decking but below the insulation. 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 potential for. In a warm deck roof the insulation is positioned above the structural deck and no ventilation is required.

In case of warm roofs they have an insulation above the roof deck in this way it keeps. Ventilation is required for these roofs. Guidance advice on warm cold. In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required.