Flat Roof Fall Building Regs

When installing or repairing a flat roof you must adhere to building regulations.

Flat roof fall building regs. 40 units in length for every one unit drop in height although the minimum fall required according to bs 6229 a british standard for flat roofs is a shallower 1 80. The fall should never be less than 1 80 and preferably about 1 40. Regulations and the general duty clause. The building regulations encourage a minimum fall of 1 40 i e.

Here are some basic ideas for developing fall protection strategies for roofing operations. A qualified roofing contractor will be able to advise on this but here are some of the main guidelines. Because the desired fall may be difficult to achieve in practice the designer may need to adopt a design fall considerably steeper often twice than the recommended finished fall. Flat roof this usually consists of felting which has a slight fall to allow rain water to drain off.

Cover photo courtesy of the national roofing contractors association. There is also the scope to incorporate a green roof onto the flat structure. Occasionally a new flat roof will be required to replace an old roof for example asbestos or corrugated tin roofs which are either not allowed under building regulations or are in a complete state of disrepair. What pitch is a flat roof.

How are flat roofs defined. Part h of the building regulations regarding drainage state that water should drain to one or two edges. In bs 6229 a roof is defined as flat if it has an overall pitch of 10 degrees or less. With regard to fall protection requirements applicable to the construction work itself 1926 501 b 10 low slope roofs requires conventional fall protection a combination of a monitoring system and warning line or on roofs of 50 feet or less in width a monitoring system alone i e without a warning line be used.

According to bs 6229 bs 8217 flat roofs should be designed with minimum falls of 1 40 to ensure a finished fall of 1 80 can be achieved allowing for any inaccuracies in the construction. The building regulations for flat roofs can seem like a lot to understand which is why we have put together a simple guide of the things you need to know about when it comes to considering the building regulations for flat roofs. Protecting roofing workers 5. There are several methods of building in a fall.

There must be a slope of 1 80. It is a requirement of building regulation part h that adequate provision is made for rainwater to be carried from the roof of the building.