Timber Flat Roof Construction Details Uk

Roof ridges and ridge tiles roof hips and hip tiles roof valleys roof verges and lead flashings.

Timber flat roof construction details uk.

Further information on specific waterproofing systems may be obtained from bs 8217 reinforced bitumen membranes for roofing code of practice the flat roofing. Part 4 flat roof construction. Paying careful attention to. Covers pitched roof detail.

Sizes of joists needed for flat roof construction. Roofs tend to be either pitched or flat and typically in residential construction timber is the most common material used. Covers flat roof materials and flat. You can find the building regulations here.

Covers pitched roof materials basic pitched roof designs cold and warm pitched roofs and pitched roof construction. However whilst they are described as flat almost all flat roofs are actually laid to a fall to ensure that rainwater can run off to the lower side. Part 3 pitched roof detail. Flat roof types.

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. Part 2 pitched roof construction. Old asbestos roofs are often replaced with flat roofs. When installing or repairing a flat roof you must adhere to building regulations.

While many will contact a professional installation company to complete the job there are others who will feel confident enough in their own ability to install a flat roof onto the. Flat roof designing buildings wiki share your construction industry knowledge. As with the construction of any type of roofing system it s crucial to understand the correct process and essential criteria involved in flat roofing construction. 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. They tend to be variants on flat roofing using curved timber glulam beams under a plywood covering. So any timber joists that are used need to be strong enough to support this weight. Roof building is one of the more complex aspects of site carpentry and is a highly skilled job as the timbers are cut on site and erected one at a time it is both relatively slow and relatively expensive.

The building regulations in the uk provide guidance on roof design. It must provide adequate protection against the elements keeping the buildings structure and interior dry. Typically they are designed to have a minimum fall of 1 40 which given on site inaccuracies should. Others would treat even steeper pitches as flat roofs.

As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. When building a flat roof it is vital that a degree of falls is built into the construction to ensure rainwater run off. This appendix contains common details for flat roofs and balconies. The following sketches show examples of typical common construction details and illustrate general principles.