Cold Deck Roof Construction

The breakdown warm roof vs cold roof.

Cold deck roof construction.

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 damage caused by thermal movement. Warm roof insulation ensures the entire roof structure is insulated meaning a warm deck roof is more energy efficient than a cold roof. It is usually the most acceptable type of construction for domestic possessions and belongings as it avoids the need for aeration of the roof construction. The insulation material is placed immediately above the ceiling between the rafters.

In case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm. This cold deck construction is considered problematic in the humid temperate climate of the uk where the effective ventilation of restricted roof voids may be impractical particularly in sheltered built up areas. Guidance advice on. A cold flat roof insulation requires more work taking off old boards and replacing them and the roof surface.

In the case of cold. Plywood the insulation is fixed directly on top often with. This video shows the key features of a flat roof cold deck construction and how to draw the details to a scale of 1 10. Ventilation is required for these roofs.

Cold deck roof 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. Ashford building services can quickly and economically convert any cold deck flat roof to a warm deck insulated flat roof particularly where problems have been tackled sooner rather than later. Introduction warm cold roofs this guidance offers guidance on the difference benefits between warm and cold roofs. A cold deck is constructed as follows.

Where the existing roof deck is in satisfactory condition and of a suitable material e g. The 18mm roof grade deck is then fixed on top of the rafters leaving.