Roof Slope Area Conversion Tables

Low slope roofs are from 0 to 3 12 in pitch.

Roof slope area conversion tables.

On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length. For example if you measure 4 inches the pitch of your roof is 4 12. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Roof pitch conversion charts are very useful for one thing they give you all the information that you need to provide to the professionals.

Slope conversion tables 1 4 1 2 3 4 1 1 1 4 1 1 2 1 3 4 2 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 0 25 0 50 0 75 1 00 1 25 1 50 1 75 2 00 2 25 3 4 5 6 7 8 9 10. For roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1. Although there s isn t any standard pitch of a roof used on all kinds of sloped roofs you can determine the range of pitches by using a roof angle calculator and by considering factors like the local climate and roofing materials. Roof pitch refers to the measurement of the slope of a roof and you express this as a ratio.

A 12 in 12 pitch is a. The following table shows the roof pitch rise in run equivalents for all roof slopes in degrees from 1 to 72. If you can give them the exact chart and measurement that you like the look of they can work to those specifications. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.

Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter. The charts are there to provide people with an idea of what the actual slope will. If asphalt shingles are to be installed on a low slope roof special steps are required to avoid short roof life and roof leaks. To accurately calculate the area of your roof you must first determine its slope or pitch.

Divide the rise by the run the run is 12. This will give you the rise over run or pitch. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. Some sources consider low slope to include 3 12 pitch roofs.

The combination of two numbers are used to display or show the roof pitch.