Flat roof joists spanning the shorter length of the roof form the load bearing members of the structure.
Garage flat roof detail.
A timber decking is then constructed and its weight supported by the joists.
Traditional homes often have sections of flat roof over shed dormers above porches and garages and on balconies.
A flat roof must be strong durable and stable throughout its lifetime.
To do this you use pieces 2 x 4 cut into sections and increasing by 1 8th inch every section up the beam.
Some architectural styles that feature big boxy designs would be a natural fit for a flat roof.
It does have a slight raise to it to prevent it from pooling water.
But flat roofs take a pounding from harsh weather which is why they rarely last as long as a good sloped roof.
From there the flat roof system you choose will determine the materials you apply.
What types of flat roofs are there.
Ask any architect and they ll tell you that hardly any other type of architecture is as timeless and modern as that of flat roof houses.
A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less.
Regardless of how new or modern a house is there is a good chance that it will be topped off with a flat roof now but if you can t picture how great they look we.
Flat roofing is a popular choice for garages homes garages extensions and many other types of buildings.
On a basic level flat roof construction comes in the form of roofing timbers or joists as they are more commonly known or steels that are laid across two uprights walls in most cases.
The steels or rsj s rolled steel joists are often built into one or both walls to give added stability to the roof structure.
You can think of a flat roof for a garage extension or shed that connects with the main house as an example of a flat roof installation project.
This is achieved by raising the roof in 1 8th increments every foot.
Our regular steel garage roofs are designed to allow water to easily flow along the ridge draining quickly from the ends of the roof panels.
It must provide adequate protection against the elements keeping the buildings structure and interior dry.
Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board.
It should come as no wonder then that these are experiencing a serious comeback right now.
Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.
The roofs have a timber frame as the supporting structure.
