Flat Roof Turns Into Pitched Roof

Building a pitched roof over an existing flat roof.

Flat roof turns into pitched roof.

Flat roofs are about 10 20 more expensive to install than a pitched roof after the conversion. With the pitched roof in place now you need to cover it. At this point your flat garage roof has taken on an entirely new shape. They last 25 50 years while a flat roof membrane will last about 15 20 years.

Attach the screws to the sides of the roof trusses. However if you re looking for something a little more abstract you can have additional valleys angles and gables built into the system. This is because the membrane is more expensive to manufacture as well as the need for more specialized labor. Step 4 roof covering.

Flat roofs also don t last as long. Most projects will see a flat roof being turned into a pitched one by using a trussed roof with two angled planes. However flat roofs require much more aggressive and consistent maintenance than a pitched 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.

Additional valleys angles and gables can be built into converted roofs as well but adding these elements may affect your project. Depending on the climate your flat roof will only last between 15 and 30 years if well maintained. Pitched roofs have about a 40 longer life than flat roofs. Bruce o neal of matthews roofing in chicago says keeping drains and scuppers clear is the single most important maintenance task because backups there will trap standing water on the roof.

Once you ve done this cover the roof with plywood cutting the sheets where needed and hammering into place on the roof trusses. How much does it cost to convert a flat roof to a pitched roof. It is a significant renovation if you are converting from flat to pitched. While that s the easiest route it s certainly not your only option.

Most homeowners choose to convert a flat roof to a pitched one using a simple trussed roof with two angled planes. Fall is a good time to sweep off leaves and dirt that would turn into mulch over the winter.