This is why warm flat roof designs are commonly regarded as the preferred and more effective design.
Warm deck flat roof design.
Warm roof designing buildings wiki share your construction industry knowledge.
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.
This is as opposed to a cold roof in which the insulation is below or within the roof.
It is most important to note the vapour barrier must be a continuous vapour barrier with no puncture points.
In the case of a flat roof insulation is usually in the form of either a rigid board above the deck or a fibrous quilt immediately above the ceiling depending on the type of roof construction.
Traditionally flat roofs simply consisted of a structural timber deck with a waterproof covering directly applied to the top of the deck.
The recognised flat roof build ups for best design practices are.
Where a cold flat roof does incorporate insulation this is in the form of mineral wool.
Flat roof design guide.
This results in the structural deck and its supports being at a temperature closer to that of the building s interior.
Warm flat roof designs.
This design dates back many years and flat roof insulation was somewhat of an afterthought with this type of roof.
There are three recognised designs of flat roof construction.
Warm cold and inverted.
On flat roofs a warm roof is one in which the insulation layer is laid on top of roof structure.