Propper Roof Pitch

An example for a steep sloped roof is 8 12.

Propper roof pitch. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. The pitch of your roof is determined by the measurement of the vertical rise by the horizontal run. This means that the rise of the slope goes up or down 8 inches for every 12 inches. 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.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. The pitch of a roof is arrived at by dividing the vertical rise and its horizontal span or what people in the roofing industry would refer to as the slope. There are different kinds of roofs and all these have particular specifications for their installation. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.

Many roofs are going to have slopes between 30 and 40 degrees which means that solar panels can lie flush against the roof and produce enough electricity for attractive returns. Roof pitch in layman s language simply refers to the steepness of the roof. Pitch angle incline slope they all can be used to refer to the steepness of a roof. The slope of a roof or pitch is determined by how many inches the roof rises over 1 foot or 12 inches.

So let s say a roof rises 6 inches for every 12 inches in depth towards the peak. Even the simplest of rooflines has dozens of potential leaks sites due to chimneys ridges valleys etc. There is no standard universal roof pitch. 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 a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch. To put it in perspective the angle of this slope would be around 30 degrees. Proper detailing around these areas as detailed in the diagrams is critical. Roof pitch designations are comprised of two numbers indicating a ratio.

In the usa the range of standard pitches is anywhere between 4 12 and 9 12. That is to say the roof pitch expressed as a ratio tells you how many inches the roof rises for every 12 inches of depth. In the uk the typical house has a pitch between 40 50 although 45 should be avoided. Roof pitch defined and explained pitch is the term used to describe the angle slope or slant of your roof.

The majority of roof leaks occur in locations where the plane of the roof is interrupted by a ridge another roof intersecting at an angle a wall or penetration.