Warm Deck Roof Construction

The insulation can be adhered mechanically fixed or loose laid.

Warm deck roof construction.

In a warm deck roof the insulation is positioned above the structural deck and no ventilation is required. Warm roofs have an insulation layer above the roof deck. Guidance advice on warm cold. In a warm flat roof construction the insulation is positioned above the structural deck and no ventilation is required.

Ventilation is required for these roofs. The vapour control layer is above the decking but below the insulation. The insulation is immediately below the waterproofing layer. 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.

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. 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. This usually keeps the deck warm. It is the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction.

Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs. 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. 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 warm deck roof design is the modern method for flat roof construction and is preferred wherever this option is possible.