Poured Concrete Flat Roof

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.

Poured concrete flat roof.

The blocks come in several sizes but this guide will assume you are using a 16 3 4 inch wide concrete slab. The steel joists will provide a strong foundation for the flat concrete. Material included in this concrete slab are wood structural iron portland c. A flat roof is a roof that is completely or almost level.

The flat concrete roof itself can be up to 7 inches thick although the greater the thickness the more the concrete will need be poured in increasing numbers of layers with each one needing to dry before the next is poured. Just enough slope to drain water but also flat enough to be a problem if not constructed properly. While flat roofs are the easiest to create out of concrete complex sloping roofs are also possible. To insulate a flat roof with a concrete deck we recommend a warm deck construction method where the vapour control layer is sandwiched between the concrete deck and a layer of rigid pir insulation boards.

The roof needs to be thick in order to provide insulation and proper protection. The savings in eliminating conventional roofing materials will also offset the cost of the concrete roof solution. Step 3 placing the steel joists. Pouring the concrete roof easy step building a country house traditional construction.

Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. Roofing materials have not been used on concrete roofs on houses constructed on the island of guam over their 50 year history. One of the most crucial step in building a flat concrete roof is to figure out the size of the concrete block you will need. Flat roof designing buildings wiki share your construction industry knowledge.

Leaks are rare generally caused by faulty construction practices and are easily repaired. Typically they are designed to have a minimum fall of 1 40 which given on site inaccuracies should.