Roof Slope Factor Chart

Finding the slope and hip and valley factor.

Roof slope factor chart. Roof pitch is a term used in the roofing industry to describe the angle slope of a roofing structure. Multiply the roof length by the gable wall length 40 24 960. The area of a hip roof equals the area of a gable roof with the same dimensions. The rise and the length.

Once you ve figured out the pitch of your roof you can consult the following chart to discover the slope factor and hip valley factor. 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. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Roof pitch angle and slope factor charts.

Most commonly a roof pitch will be from 0 flat to 12 45. The area of this roof 1073 3 sq. The pitch of a roof is determined by 2 numbers. Roof pitch is a term describing how steep or flat your roof slope is.

The combination of two numbers are used to display or show the roof pitch. Download the slope chart pdf. Multiply this amount by the slope factor 960 1 1180 1073 28. For example if you measure 4 inches the pitch of your roof is 4 12.

Valley hip factor. This will give you the rise over run or pitch. 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.