Warm Flat Roof Construction Details Building Regulations

No ventilation is required for these types of roofs.

Warm flat roof construction details building regulations.

Warm deck this is where the insulation is placed on top of the rafters joists and the roof covering is then placed over the insulation. That will help you remember certain factors and details to build the best possible flat roof. Flat roof this usually consists of felting which has a slight fall to allow rain water to drain off. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls.

Details both in 2d and 3d to give a clear understanding. If you have an existing cold roof in need of refurbishment it should be converted to a warm roof see sketch 1 to meet part l of the building regulations. Types of flat roof construction warm and cold flat roofs. Having a manual for warm flat roof construction with details and a summary of rules to follow helps.

Flat roofs there are two common forms of construction for flat roofs. Flat pitched cold warm roofs. 4 essentials for a successful flat roof like any part of a building s exterior flat roofs should be constructed to withstand natural and human forces with the minimum of attention. Although flat roofs.

This can be achieved by adding a layer of inorganic stones embedded in complex to the surface of the roof or alternatively by using an inorganic textured layer of rbm. There are two ways to insulate a roof. Flat roof types. Make sure your comply with flat roof building regulations.

There should be no insulation below the deck and no ventilation is required. 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. Cold deck this is where the insulation is placed between the joists rafters or in between the ceiling joists in the case of a pitch roof. Warm deck sandwich or cold deck.

Sometimes the excitement of starting a new construction project or building venture can lead you to forget about the finer details such as planning permission and local building regulations. It must provide adequate protection against the elements keeping the buildings structure and interior dry. Flat roof details and information relating to insulating a flat roof. Flat roof construction can come in the form of a warm roof or cold roof depending on the requirement of the owner and architect as they relate to the building regulations regarding heat loss and insulation.

The building regulations for new roofs laid down the degree of protection required in the case of a fire accident. A roof is defined in bs 6229 as a flat roof if it has a pitch of 10 degrees or less. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. A flat roof must be strong durable and stable throughout its lifetime.

Warm deck roof with this type of roof the insulation is placed above the roof deck but below the weatherproofing.