Pitched Roof Over Flat Roof

It is a significant renovation if you are converting from flat to pitched.

Pitched roof over flat roof. A common question you get during your home inspections is whether flat roof cost vs pitched roof cost is less desirable than sloped roofs. Flat roofing systems come with benefits and drawbacks. 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.

A 900 square foot flat roof in the san francisco area made of concrete tiles costs. However in exchange for the added expense you will receive a roof that boasts a longer lifespan thoroughly effective water drainage and a more. I ve never been a fan of flat roofs seems like having water sitting on a tiny pitch is a recipe for disaster anyway we ve a flat roof single storey extension with a couple of problems or three water is finding its way into the inside of the chimney might or might not be a problem with the roof could be higher up the chimney etc. Flat roof or pitched roof.

Whether you re building a home from scratch or replacing your roof with a brand new design the first you ll need to weigh up the pros and cons of both flat roof and pitched roofs. If you have a high rise building converting your flat roof to a pitched one may not be applicable. Low pitched roofs have the pitch below 4 12 33 3. Depending on the climate your flat roof will only last between 15 and 30 years if well maintained.

A pitched roof is more expensive. Additional valleys angles and gables can be built into converted roofs as well but adding these elements may affect your project. However flat roofs require much more aggressive and consistent maintenance than a pitched roof. Flat roofs are not perfectly flat in reality they need a small slope for water runoff.

This is because it is a more complex design than a flat roof that requires increased labour and additional materials. According to improve net s online roofing calculator a flat roof is significantly cheaper than a pitched roof. Replacing a roof can be expensive but if a roof contains only a small slope it s possible to raise the roof pitch of a house by building a roof over the old one. Generally these roofs have a pitch from 1 2 12 to 2 12 from 4 2 to 16 7.

To get rid of ponding water problems. This new roof with a higher pitch can be accomplished with premade roof trusses and typical asphalt shingles. These are generally difficult in maintenance as they require special materials to avoid leaks. Unlike sloped roofs flat roofs are susceptible to ponding water.

Pitched roofs cost more than a flat roof and also take longer to install. Both your personal requirements and the needs of your property will sway your decision either way so it s vital to do your research first.