Understanding Roof Pitches

Pitch is further defined as rise over run.

Understanding roof pitches.

For example if a roof is 8 feet high and spreads out from the center covering 12 feet in each direction the rise over the run would be 8 12. It can be measured in degrees or what is known as pitch. If the slope is 4 12 the pitch for the 24 foot span is 1 6. The rise is the height of the roof from the base to the top.

Low pitch roofs are safer and easier to access when maintenance. Since a low pitch roof doesn t require as many shingles more often than not a low pitch roof will end up being more. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. In this instance we want to take a look at how this can be changed and improved with the help of a roof pitch chart.

Especially for homes in the south a low pitch roof. Slope minimums for various roof coverings. The bottom horizontal line of the triangle is the base of the roof. The roof pitching is essentially how steep the roof is going to be they are either going to be flat or pitched.

Roof pitch is what roofers call the angle of the roof relative to a horizontal line. Roof pitch is the rise of the roof over the run of the roof. If the pitch is 1 3 the slope is 8 12. 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.

And pitch is a fraction derived by dividing the rise by the entire span. Mathematically the pitch of a roof is different calculation than roof slope. A roof that ascents six inches each twelve level inches is depicted as a 6 and 12 roof. A roof that rises 4 inches vertically for every 12 inches horizontally is said to have a 4 12 pitch.

This implies a rooftop that is 4 inches higher than it was 12 creeps back assessing on a flat plane is a four and twelve rooftop. Pitch compares the roof s span to the rise while slope compares rise and run. The lower pitch of the roof means greater walkability. First measure 12 inches from one end of the level and make a mark.

To calculate pitch you simply divide rise by span and display your result as a fraction. You ll often hear experts express pitch as x over y.