Flat Roof Timber Frame Construction

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.

Flat roof timber frame construction.

As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. Roofs tend to be either pitched or flat and typically in residential construction timber is the most common material used. The fall of the roof is achieved by using firring pieces with a fall of 1 in 40.

The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Finally feel like we are slowly getting back to an actual building. So any timber joists that are used need to be strong enough to support this weight. Old asbestos roofs are often replaced with flat roofs.

Others would treat even steeper pitches as flat roofs. It s been a couple of long days working solo to get it all up but it s rewarding stuff se. The ceiling joists are used as the platform for the roof coverings. The flat roof shown above shows warm deck roof construction.

When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. Sizes of joists needed for flat roof construction. The roof is a key element of the building structure providing protection from the elements and has a vital role in reducing heat loss from the building.