Figure Out Existing Pitched Roof

There is no standard universal roof pitch roof pitch varies depending on culture climate style and available materials in the usa the range of standard pitches is anywhere between 4 12 and 9 12 in the uk the typical house has a pitch between 40 50 although 45 should be avoided.

Figure out existing pitched roof.

What is the standard pitch for a roof. One method to find the pitch is to climb on the roof and measure the rise for a 12 run. The traditional method has been rise inches 12 run inches. You ll need a level that is 12 or longer and a tape measure.

Express roof pitch as the ratio of the amount of the vertical rise of a roof or rise over the corresponding horizontal distance or run you write the pitch assuming a run of 12 inches thus the ratio would describe how much a roof rises for each foot of the run. Even if you want to use a flat roof pitch calculator system you will be able to find one. If it rises only 6 for every 12 it s a 6 12 pitch. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

As aforementioned there is no standard pitch of a roof. Place the level horizontally along the rafter until it contacts the roof sheathing avoiding any protruding roof nails. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. Pitch is the incline of the roof represented as the ratio of rise to the span twice the run.

Working from the interior side of the roof you ll need access to a roof rafter to measure the pitch. Contemporary houses often have flat roofs which shouldn. How to measure roof pitch. On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise.

Outside of the u s a degree angle is typically used. The angle or pitch of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally. For example a roof that rises 6 inches for every 12 inches of horizontal run has a 6 in 12 pitch. If you need to find the pitch of an existing roof all you need is a level and a tape measure.

For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4.