How Do I Determine The Pitch Of A Roof

Before you calculate roof pitch you ll need to measure the slope of your roof.

How do i determine the pitch of a roof.

Divide the first part of the ratio by 12 to work out the pitch. To convert between american roofing ratios and pitch degrees follow these steps. The level should be at least 12 long. A 12 12 pitch roof has a pitch angle of 45.

How roof pitch is calculated. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches. Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. Make sure your have a 12 mark on your level. 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. Roof pitch affects the actual area of the roof.

Here s an easy safe way to determine the pitch from inside your attic. 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. Marvel at your mathematical. Roof pitch calculator results explained.

Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot. 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. The easiest way to do this is by accessing a rafter in your attic if you can.

Check your results with the omni roof pitch calculator. First measure 12 inches from one end of the level and make a mark. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

After measuring the slope estimate the roof pitch by dividing the slope by 2. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. Find the inverse tangent of the pitch to find the angle in degrees. When you need to determine your roof pitch all you need is a bubble level and a tape measure.