The ceiling if any is usually fixed directly to the underside of the joists.
Flat roof detail uk.
This will ensure that british standards and codes of practice are properly maintained including minimum 150mm upstands and mechanical restraints at waterproofing termination points.
It must provide adequate protection against the elements keeping the buildings structure and interior dry.
Flat roof types.
Flat roofs were uncommon in the uk until after the second world war.
That will help you remember certain factors and details to build the best possible flat roof.
Warm and cold roofs householder s guide to flat roofing in a flat roof the waterproofing is always supported by a structural roof deck.
By way of metal flat roof joist hangers.
Flat roof construction for residential.
The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.
Having a manual for warm flat roof construction with details and a summary of rules to follow helps.
The preferred design of a flat roof fall is 1 40 although this can vary and be anywhere down to 1 80.
A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal.
Flat roof components.
A flat roof is a multi layer construction typically comprising of the following elements.
This ethylene propylene diene monomer rubber covering is very versatile long lasting and very strong.
A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.
A flat roof must be strong durable and stable throughout its lifetime.
Waterproof membrane with a protective covering this should prevent water reaching the roof structure and the room below.
This is usually a timber boarding of some type which in turn is supported on joists.
This flat roof covering can be roofing felt usually 3 layers with a mineral chipping topping to soak up the heat of the sun which protects the felt from both melting and breakdown under uv rays.
Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.
Reputable flat roofing manufacturers should have appropriate detail drawings for most penetration requirements.
A guide to flat roof options.
Components of a flat roof.
Using timber wall plates.
This article covers all manner of flat roofing venting methods and details on how to build a flat garage roof and how to frame a flat roof and also encompasses flat roofs roof decking roof coverings including flat roof felt how to prevent leaks at abutments timber flat roof construction details and parapets and common.
This depends on the site upon which the structure has been built.
