How To Figure Out The Pitch Of Your Roof

How to measure roof pitch.

How to figure out the pitch of your roof.

Roof pitch calculator results explained. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. To accurately calculate the area of your roof you must first determine its slope or pitch. Roof pitch is used to describe the slope or angle of the roof.

This is the amount your roof inclines in a 1 foot span or the pitch. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. For example if a roof has a pitch of 4 12 then for every 12 inches the building extends horizontally it rises 4 inches. Find the inverse tangent of the pitch to find the angle in degrees.

Knowing the pitch of your roof is useful when designing an addition installing skylights or cutting new rake boards. Place the end of your level the 0 inch point of your 12 marking against the roof surface. How roof pitch is calculated. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Hold the level straight and level bubble centered and then measure the vertical distance down from the your 12 mark on the level down to the roof. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. Climb up on your roof.

After measuring the slope estimate the roof pitch by dividing the slope by 2. The easiest way to do this is by accessing a rafter in your attic if you can. Divide the first part of the ratio by 12 to work out the pitch. Here s an easy safe way to determine the pitch from inside your attic.

Marvel at your mathematical. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually. The roof pitch calculator is a convenient online tool you can use to quickly assess the pitch of your roof to determine the length of rafters you need. The pitch is commonly defined as the ratio of rise over run in the form of x 12.

Homes and other buildings have roofs with slopes ranging from no slope or flat to very steep slopes. To convert between american roofing ratios and pitch degrees follow these steps. Before you calculate roof pitch you ll need to measure the slope of your roof. Check your results with the omni roof pitch calculator.

How to calculate the pitch of a roof. The rise is the height of the roof and the run is the horizontal span as pictured above.