Flat roof construction for residential.
Concrete flat roof construction detail.
A concrete slab flat roof is normally made up of a structural layer of concrete finished with a smooth screed onto which a water proof layer such as a membrane is laid.
A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal.
Part d design principles describes the most important materials used these days for the individual layers in a flat roof construction.
Exact specifications vary but most concrete roofs are several inches thick.
Having a manual for warm flat roof construction with details and a summary of rules to follow helps.
For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.
For additional stability you can also use steel joists that are built into one or both of the walls.
They can be used on timber metal and concrete decks.
The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.
Flat roof installation waterproofing detail construction.
Waterproof membrane to prevent water penetrating the structure and interior of the.
Today s high performance felts are reinforced with polyester or glass or a mixture of the two and are coated and impregnated with bitumen.
The definition of a flat roof according to bs 6229 is having a pitch less than 10 o to the horizontal however some in the industry would consider up to 15 o as their definition of a flat roof.
Concrete slab flat roofs.
The roof should incorporate insulation and usually a vapour control layer to protect from interstitial condensation.
Design and detail together with proper preparation of the substrate are key elements to successful roofing.
Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.
This section refers to general low slope less than 5º pitch concrete roofs screeded to falls and crossfalls to outlets where the roofing membrane is exposed to the elements and temperature fluctuations.
A concrete roof is exactly what it sounds like.
Built up bituminous membranes are probably the most economic and common form of roof covering material for domestic flat roofs.
The catalogue of materials extends from waterproofing.
A solid slab of concrete capping the top of your house.
A flat roof usually consists of the following.
When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off.