Pitch Of Roof

Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run.

Pitch of roof.

Technically roof pitch is the ratio of total vertical roof height the rise to total horizontal distance from wall to wall the span. Although most homeowners do not need to measure pitch it still pays to understand this term. The ridge height is 2 9ths to 1 3 the span an angle of 24 to 34. In the uk the typical house has a pitch between 40 50 although 45 should be avoided.

Roof pitch varies depending on culture climate style and available materials. The rafters equal the span. Roof pitch refers to the slope which the rafter creates. 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 roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. Pitch angle incline slope they all can be used to refer to the steepness of a roof. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. How to measure roof pitch to measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil.

The most commonly used roof pitches fall in a range between 4 12 and 9 12. Commonly used roof pitches were given names such as greek. The ridge height is 1 9 to 1 7th the span an angle of 12 5 to 16. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled.

In the usa the range of standard pitches is anywhere between 4 12 and 9 12. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. The rafter length is 3 4 the span about 48. There is no standard universal roof pitch.

First measure 12 inches from one end of the level and make a mark.