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There are several ways to convert a flat roof to pitched.
The typical way is to remove the existing roof and add new framing to the home that create a pitched roof over the old flat roof area. On houses, new pitched roofs typically are supported by the exterior walls, as with standard sloped-roof construction.
Keeping this in consideration, can I change a flat roof to a pitched roof?
Simply replacing your existing flat roof with a new one should be a pretty straightforward process. When converting your flat roof into a pitched roof, that's when planning permission may come into play. A low-pitched roof should be easy enough to gain planning permission for.
Beside this, how much does it cost to convert a flat roof to a pitched roof?
All that moisture exposure tends to wear down roofing materials, meaning a new roof—and a $5,000 or more price tag. These are just some of the reasons that homeowners start longing for a pitched roof—and wondering if they're stuck with their flat roofs forever.
Raising the pitch of a roof often requires not only tresses but new supports, new roofing and, in the end, a full replacement of the rooftop itself. According to Costhelper.com, a typical new shingle roof can cost between $1,700 and $8,400 to have built.