Flat Roof Into Pitched Roof Detail

Some will choose to keep their pre existing flat roof on their structure underneath the new pitched roof to save removal costs but others might not be able to consider that option as their building couldn t support the weight of two roofs.

Flat roof into pitched roof detail. Instead the roof must be done with a modified bituminous membrane e g. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. Flat roof connected to pitch roof. To discuss your project in more detail please contact your local area manager.

The process for converting a flat roof into a pitched roof depends on your individual structure and your individual needs there is no one size fits all option. It appears to be flat but it needs a slope to allow the water to drain from the roof. While that s the easiest route it s certainly not your only option. A roof is considered to be flat when it is of a slope of 1 5o to the horizontal.

Waterproof membrane to prevent water penetrating the structure and interior of the building. It is a significant renovation if you are converting from flat to pitched. According to improve net s online roofing calculator a flat roof is significantly cheaper than a pitched roof. Depending on the climate your flat roof will only last between 15 and 30 years if well maintained.

Additional valleys angles and gables can be built into converted roofs as well but adding these elements may affect your project. Flat roof construction manual materials design applications. A flat roof isn t actually flat. Warm roof to pitched roof junction mansard.

However flat roofs require much more aggressive and consistent maintenance than a pitched roof. Flat roofs also don t last as long. Armourvalley or other materials like epdm pvc or tpo covering. For slopes less than 9 5 we cannot install roof shingles.

It has a slope of 2 3. A selection of roof detail drawings including flat roof details pitched roof details mansard roof detail parapet verge ridge and eaves details. Most homeowners choose to convert a flat roof to a pitched one using a simple trussed roof with two angled planes. A 900 square foot flat roof in the san francisco area made of concrete tiles costs.