Residential Flat Roof Detail

Flat roofs come in many shapes and sizes which include parapet roofs roof decks and green roofs to name just a few of the options available.

Residential flat roof detail.

Flat roofs make replacing a roof a challenge. Of all these membrane types epdm synthetic rubber is the most common single ply membrane roof material in both residential and commercial use. Of course flat roofs are not flat but have a very slight roof pitch of between 1 4 to 1 2 per foot. There s a lot to know about flat roof systems and how they.

A typical flat roof repair costs at least 350 400 and involves locating sources of leaks and patching the seams or holes. 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. A roof is considered to be flat when it is of a slope of 1 5 o to the horizontal. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof.

Ultimately a flat roof should play a part in a total architectural composition and has the ability to enhance the aesthetic and practical outcomes of a home. But now flat roofs often are constructed with fewer layers because of improved waterproofing technology. Cities with older housing stock think federal hill in baltimore or alexandria virginia s old town the roofs are often flat or have very low slopes. Just enough slope to drain water but also flat enough to be a problem if not constructed properly.

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. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. Most modern residential homes have relatively steep pitches. 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.

Having a manual for warm flat roof construction with details and a summary of rules to follow helps. However in many u s. Pvc membranes are easy to maintain and repair. Of course you don t need to live in a modern house to deal with a flat roof.

That will help you remember certain factors and details to build the best possible flat roof. Flat roofs are hard to replace. A flat roof usually consists of the following. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.

Pros and cons for flat roof materials all three types of flat roofing cost 250 to 350 per square 100 square feet but prices vary according to region and size of the roof. Flat roof construction for residential. Flat roof systems are a bit of an outlier. Waterproof membrane to prevent water penetrating the structure and interior of the.