Replace Flat Roof With Pitched

Flat roofing systems come with benefits and drawbacks.

Replace flat roof with pitched.

Building a new floor and installing the pitched roof above that. This is because the membrane is more expensive to manufacture as well as the need for more specialized labor. While that s the easiest route it s certainly not your only option. According to improve net s online roofing calculator a flat roof is significantly cheaper than a pitched roof.

Installing a shallow pitched roof over your existing flat roof. To get rid of ponding water problems. Flip the topmost piece of the epdm material downward across the length of the roof. Most homeowners choose to convert a flat roof to a pitched one using a simple trussed roof with two angled planes.

Open the epdm square vertically along the length of the roof. A 900 square foot flat roof in the san francisco area made of concrete tiles costs. Flat roofs are about 10 20 more expensive to install than a pitched roof after the conversion. However flat roofs require much more aggressive and consistent maintenance than a pitched roof.

Pitched roofs have about a 40 longer life than flat roofs. Roofs with a slope of 1 to 3 inches of fall to 12 inches of run should use rolled roofing. Afterward flip the next topmost piece upward. There are a few ways in which you can go about the replacement including.

Additional valleys angles and gables can be built into converted roofs as well but adding these elements may affect your project. This has to happen whether you re just removing the pitched roof or adding another floor with a flat roof. They last 25 50 years while a flat roof membrane will last about 15 20 years. Lay down the square folded epdm material in the center of your flat roof.

Determine the slope of the roof. A pitched roof is more expensive. Unlike sloped roofs flat roofs are susceptible to ponding water. It is a significant renovation if you are converting from flat to pitched.

Flat roofs also don t last as long. Adding a trussed style roof. You can tear off the existing roof remove the trusses and strengthen the joists. If you have a high rise building converting your flat roof to a pitched one may not be applicable.

There are a few ways to dealing with a pitched roof if you choose to convert to a flat roof. 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.