Flat Roof Into Pitched Roof Detail

Flat roof construction manual materials design applications.

Flat roof into pitched roof detail.

A roof is considered to be flat when it is of a slope of 1 5o to the horizontal. While that s the easiest route it s certainly not your only option. Warm roof to pitched roof junction mansard. Additional valleys angles and gables can be built into converted roofs as well but adding these elements may affect your project.

A flat roof usually consists of the following. It has a slope of 2 3. 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 is a significant renovation if you are converting from flat to pitched.

Depending on the climate your flat roof will only last between 15 and 30 years if well maintained. Flat roof connected to pitch roof. 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. However flat roofs require much more aggressive and consistent maintenance than a pitched roof.

Although flat roofs are cheaper to build than pitched roofs they have a shorter life span. A flat roof isn t actually flat. Instead the roof must be done with a modified bituminous membrane e g. For instance where flat roofs are converted into pitched roofs during refurbishment projects because the latter allegedly exhibit better insulation characteristics or where flat roofs are not.

A pitched roof is more expensive. To discuss your project in more detail please contact your local area manager. Flat roofs also don t last as long. It appears to be flat but it needs a slope to allow the water to drain from the roof.

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. Waterproof membrane to prevent water penetrating the structure and interior of the building. According to improve net s online roofing calculator a flat roof is significantly cheaper than a pitched roof.