Steve from london flat roofingexplains how warm flat roof construction works in this excellent short video.
Warm flat roof detail.
The sandwich warm deck roof is the most common type of flat roof.
The insulation is placed below the waterproof covering and is either mechanically fixed or bitumen bonded on to the top of the deck.
The membrane is then attached to the insulation.
The insulation is tapered to provide a fall to the roof to enable water to run to the water outlets.
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.
Warm deck flat roof the type of insulation for this is usually of a rigid type and the thickness will vary depending on the manufacturer s specifications.
Inverted warm deck roof the insulation boards in an inverted warm deck are laid over the structural deck and the waterproof covering.
The vapour control layer is above the decking but below the insulation.
The insulation is immediately below the waterproofing layer.
Flat roof drain types so even though flat roofs are ideal for drier landscapes in climates with heavy precipitation a properly installed flat roof can be a fine choice for a homeowner especially thanks to ever improving waterproof materials and installation techniques.
For additional stability you can also use steel joists that are built into one or both of the walls.
Having a manual for warm flat roof construction with details and a summary of rules to follow helps.
This enables the temperature of the structure and the deck to be kept close to the temperature of the inside of the building hence warm.
In a warm roof construction the principal insulation layer is placed above the structural decking resulting in the structural deck and support structure being at a temperature similar to that of the building interior.
Due to the insulation being over the top of the roof the timber structure beneath is warm which is why the term warm roof is formed.
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.
The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure.
A warm flat roof is formed by placing a layer of insulation over the top of the roof structure.
Warm roof systems benefit from the insulation sitting above the deck.
Warm roofs in case of warm roofs they have an insulation above the roof deck in this way it keeps the deck warm.
