How Much To Roof A Flat Roof

The actual cost of a flat roof depends on your location the materials used the complexity of the installation and other factors.

How much to roof a flat roof.

Assuming an average roof size of 1 500 square feet that s a total cost of 2 250 to 15 000. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. Anything more than 9 in 12 is considered steep. A flat roof has a slope of 2 in 12 or less.

While the average lifespan for a typical roof can be 15 20 years a long hard winter or a particularly intense storm can cause lasting damage to a roof. This is the basis for calculating the angle which is approximately a 1 19 degree slope. Average cost to install a flat roof is about 16 000. Conventional slope roof range between 4 in 12 and 8 in 12.

Roofing resources during covid 19 for contractors for homeowners. Porch the home services platform connects homeowners with quality home improvement repair and maintenance professionals and also serves as the exclusive in store resource to over 1700 lowe s stores. Most roof s have a pitch in the 4 12 to 9 12 range. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.

Over time that damage could really add up. According to the international building code the typical built up flat roof that uses tar or asphalt goes by the guideline that for every foot 12 inches of a flat roof a minimum of inch must step up or down. Shingle roofs typically have a life span of 15 30 years while membrane roofs usually last 5 15 years. A low slope roof is anywhere from 2 in 12 to 4 in 12.

The run always remains constant at 12 inches. Find here detailed information about flat roof installation costs. Although ceramic tile roofs are expensive they can have a life span of over 100 years. However flat roofs require much more aggressive and consistent maintenance than a pitched roof.

Flat roofs also don t last as long. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. It is often compared to slope but is not exactly the same. Depending on the climate your flat roof will only last between 15 and 30 years if well maintained.

The table below shows common roof pitches and the equivalent grade degrees and radians for each.