Replace Flat Roof With Pitched

Adding a trussed style roof.

Replace flat roof with pitched.

Flat roofs are about 10 20 more expensive to install than a pitched roof after the conversion. Flip the topmost piece of the epdm material downward across the length of the roof. A pitched roof is more expensive. This is because the membrane is more expensive to manufacture as well as the need for more specialized labor.

Lay down the square folded epdm material in the center of your flat roof. Open the epdm square vertically along the length of the roof. They last 25 50 years while a flat roof membrane will last about 15 20 years. Unlike sloped roofs flat roofs are susceptible to ponding water.

Afterward flip the next topmost piece upward. There are a few ways to dealing with a pitched roof if you choose to convert to a flat roof. Flat roofing systems come with benefits and drawbacks. Roofs with a slope of 1 to 3 inches of fall to 12 inches of run should use rolled roofing.

Most homeowners choose to convert a flat roof to a pitched one using a simple trussed roof with two angled planes. According to improve net s online roofing calculator a flat roof is significantly cheaper than a pitched roof. Additional valleys angles and gables can be built into converted roofs as well but adding these elements may affect your project. Align the bottom so its parallel to the bottom length of the roof.

The structure does not need to be reinforced and the surface area is not that much greater for a shallow sloped shed roof. Depending on the climate your flat roof will only last between 15 and 30 years if well maintained. To get rid of ponding water problems. Determine the slope of the roof.

Flat roofs also don t last as long. While that s the easiest route it s certainly not your only option. If you have a high rise building converting your flat roof to a pitched one may not be applicable. A flat roof is easily replaced by a one way slope or shed roof.

Building a new floor and installing the pitched roof above that. It is a significant renovation if you are converting from flat to pitched. A 900 square foot flat roof in the san francisco area made of concrete tiles costs. However flat roofs require much more aggressive and consistent maintenance than a pitched roof.

There are a few ways in which you can go about the replacement including. You can tear off the existing roof remove the trusses and strengthen the joists. Pitched roofs have about a 40 longer life than flat roofs.