How Do I Determine The Pitch Of A Roof

Roof pitch calculator results explained.

How do i determine the pitch of a roof.

Before you calculate roof pitch you ll need to measure the slope of your roof. Roof pitch affects the actual area of the roof. 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. After finding out your roof pitch angles you can use the calculator to perform the calculations for you instead of doing them manually.

Divide the first part of the ratio by 12 to work out the pitch. When you need to determine your roof pitch all you need is a bubble level and a tape measure. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used. First measure 12 inches from one end of the level and make a mark.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. To convert between american roofing ratios and pitch degrees follow these steps. To accurately calculate the area of your roof you must first determine its slope or pitch. 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.

A 12 12 pitch roof has a pitch angle of 45. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. If you can t get to your attic you can measure slope on your rooftop as long as it s safe to go up there. The level should be at least 12 long.

After measuring the slope estimate the roof pitch by dividing the slope by 2. Here s an easy safe way to determine the pitch from inside your attic. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Marvel at your mathematical.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. The easiest way to do this is by accessing a rafter in your attic if you can. Angle the angle of a roof is the same as the roof s slope except instead of being. Find the inverse tangent of the pitch to find the angle in degrees.

Roof pitch is used to describe the slope or angle of the roof. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. How roof pitch is calculated. Make sure your have a 12 mark on your level.