According to the international code council the minimum slope for water runoff is inch per 12 inches.
Residential flat roof design.
Rather than being completely flat however the roofs often have a very low pitch just enough to let water drain off without collecting.
2 curved roofs.
Don t go thinking that modern houses with flat roofs only look good though as these innovative designs actually have practical properties as well.
From there the flat roof system you choose will determine the materials you apply.
In fact many residences have sections of flat roof on porches balconies garages and room extensions which appear so attractive.
You can go for an extended roof that covers a few feet outside the external walls of the house.
Getting to know the facts of flat roof style flat and low sloped roofs look striking on a wide variety of architectural models especially on contemporary house designs.
But many contemporary residential homes are also using flat roofs.
For a start there are no tricky gable end spaces to try and navigate when opening up the upper levels in flat roof houses plus you can use the roof itself as an outdoor terrace which will be a huge benefit for anyone with restrictive garden proportions.
But flat roofs take a pounding from harsh weather which is why they rarely last as long as a good sloped roof.
If your house s architecture is modern then a flat roof home design is basically expected.
There is no great architectural splendour in these roofs.
Flat roofs are typically designed with a pitch of 10 degrees or less.
Some people actually swing their golf clubs on these flat roofs.
This design is often incorporated to add to the beauty of the house.
Flat roof designs are quite common in residential buildings.
Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board.
Traditional homes often have sections of flat roof over shed dormers above porches and garages and on balconies.