Pitch Of A Roof Angle

There is no standard universal roof pitch.

Pitch of a roof angle.

Roof pitch degree table. You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. 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.

Contemporary houses often have flat roofs which shouldn t be completely flat but should be around 1 40. A ratio of the ridge height to the width of the building span and as a ratio of the rafter length to the width of the building. The ridge height is 1 9 to 1 7th the span an angle of 12 5 to 16. Roof pitch slope roof angle degree 1 12 pitch.

Historically roof pitch was designated in two other ways. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. Common roof pitches and equivalent grade degree and radian angles. Roof pitch refers to the slope which the rafter creates.

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.