Residential Flat Roof Detail

Pros and cons for flat roof materials.

Residential flat roof detail.

Flat roofs are hard to replace. Poorly constructed roofs endanger the people living in a building so you need to make the roof compatible to the rest of the building in a well engineered style. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. This could mean flat roofs may not raise the same red flags they used to.

The major difference between the warm flat roof and the cold flat roof has to do with the air flow between the roofing timbers known as joists that help to hold up the roof. Choosing a flat roof how to find the best options for your commercial roofing project. Some observers suggest it s harder to replace a flat roof than a traditional pitched shingle roof because of the labor required to remove its layers especially on older flat roofs. Flat roof construction for residential.

Of course you don t need to live in a modern house to deal with a flat roof. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. Flat roofs usually come with a 10 to 20 year warranty but can last 25 years if you build the roofs right and maintain them using commonsense rules. Although simple and utilitarian the main goal of a roof system is to maintain the watertight integrity of a building and keep its contents dry.

In the warm flat roof construction there is insulation packed into every possible space where air can flow. Waterproof membrane to prevent water penetrating the structure and interior of the. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.

A typical flat roof repair costs at least 350 400 and involves locating sources of leaks and patching the seams or holes. Of all these membrane types epdm synthetic rubber is the most common single ply membrane roof material in both residential and commercial use. Pvc membranes are easy to maintain and repair. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.

A roof is an integral part of a building and people try to personalise the roof designs to achieve optimum architectural splendour. The colour and material of the roof complement the structural integrity of a building. A flat roof usually consists of the following. However depending on the severity of the damage and the type of material installed repairing a flat roof can cost as much as 600 800.