Standard House Roof Slope

Mansard roofs are a popular option for buildings wishing to maximize the amount of living space in the building providing the option to use the loft as an additional living space.

Standard house roof slope.

A mansard roof is a four sided gambrel roof with each side having a double slope of one steep slope and one shallow upper slope. The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. You will also incur additional costs because it is much harder to deck and shingle a roof that is 12 12 pitch versus a 4 12 roof. Definitions vary on when a roof is considered pitched.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. This is the distance between trusses. Thus pitch is typically greater in areas of high rain or snowfall. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials.

Contemporary houses often have flat roofs which shouldn. Roof pitch is a measurement of a roof s slope expressed as a ratio. Arctan 3 12 14 0 the primary purpose of pitching a roof is to redirect water and snow. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.

This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. In degrees 10 2 in 12 or 1 in 6 is considered a minimum.

A standard roof pitch ensures perfect safety to construction because it creates effective water drainage mechanism. There is no standard universal roof pitch roof pitch varies depending on culture climate style and available materials in the usa the range of standard pitches is anywhere between 4 12 and 9 12 in the uk the typical house has a pitch between 40 50 although 45 should be avoided. Although there is no single standard roof pitch used on all sloped roofs factors such as roofing materials and local climate help to determine the appropriate range of pitches for a given building. But the size of pitch and type of slope depends upon so many factors including weather conditions of area as well as style of house.

Most roof s have a pitch in the 4 12 to 9 12 range.