Flat Roof Extension Building Regs

There must be a slope of 1 80.

Flat roof extension building regs.

Flat roof this usually consists of felting which has a slight fall to allow rain water to drain off. Old asbestos roofs are often replaced with flat roofs. This usually consists of felting which has a slight fall to allow rain water to drain off to enable compliance with the requirements of the building regulations to be demonstrated full details of the new roof will be needed including materials and their dimensions and performance properties. Take inspiration from the ideas above to create an aesthetically pleasing extension for your unique home.

To enable compliance with the requirements of the building regulations to be demonstrated full details of the new roof will be needed including materials and their dimensions and performance properties. To comply with part l of the building regulations flat roofs must achieve u values of 0 18 w m k or lower. Insulating flat roof extensions. U value of a flat roof.

A flat roof must be strong durable and stable throughout its lifetime. When installing or repairing a flat roof you must adhere to building regulations. The flat roof extension is more on trend than it once was and is free of the dreaded leaks that haunted this type of structure in the past. A lower u value indicates better insulation properties hence u value requirements usually specify a maximum value.

Warm deck the type of insulation for this is usually of a rigid type and the thickness will vary depending on the manufacturer s specifications. It must provide adequate protection against the elements keeping the buildings structure and interior dry. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less. This is placed over the roof joists and an board normally external ply is laid on top.

Sizes of joists needed for flat roof construction. Moreover the costs of a flat roof extension today are typically lower than for a pitched roof. As you may imagine there is a fair amount of weight involved here in terms of boards felt etc. To comply with part l of the building regulations 2010 all roofs to rooms except those in unheated buildings should be thermally insulated to a maximum u value of of 0 18 w m k.

Flat roof types. Ventilation is required for these roofs. Part h of the building regulations regarding drainage state that water should drain to one or two edges.