Roof Pitch Waste Factor

The roof waste calculation tool takes the guesswork out of estimating sketched roofs and provides an accurate and consistent method for calculating the amount of roofing material required for waste.

Roof pitch waste factor.

A flat roof has a slope of 2 in 12 or less. Roof slope style. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. Now measure upwards at a 90 degree angle to capture how much the roof rose over that length.

The waste is 4295 92 95 divisor 4522 02. Starter strip the perimeter of the roof in lineal feet including the rakes. Let s say our roof rose 5 feet. The 3977 70 is the total of your actual roof measurements.

A low slope roof is anywhere from 2 in 12 to 4 in 12. The sub total is 3977 70 x 1 08 4295 92 pitch has been added for 5 12 pitch. To obtain an accurate roof pitch measurement properly measure the rise and run. You also know how ridiculous this is.

If you have already decided that you are going to have pitched roof on your house then you have made a nice decision. Ridge length top ridge. The amount of exposure. The roof slope factor chart also consists of conversion factors to determine the slope of the roof.

First measure the roof s pitch. Conventional slope roof range between 4 in 12 and 8 in 12. There are lots of advantages that you can get by having pitched roof on your house as compare to flat roof. Roof waste is automatically calculated based on seven factors.

Enter the pitch of the roof. The run always remains constant at 12 inches. There are two main categories of roofing. Start at the edge of the roof and measure out 12 feet.

A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof 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. 10 for all gable roofs 15 for all hip roofs. The material type waste can be auto calculated for wood shake wood shingle composite or laminated shingles the valley type for composite and laminated shingles the starter course. Roof pitch factor calculator.

If you do not want to add for waste then enter 100 as the divisor. Divide the rise by the run the run is 12. That means its pitch is 5 12. Roof waste calculation accurate roof waste calculator this download requires a 200 donation via paypal.

You need to account for the pitch in order to have an accurate materials estimate. Then you ll be able to measure slope from an unfinished attic space under the roof. That is the roof s rise. Ft enter a waste factor.

The top row is a total of your roof area measurements with pitch added 5 for waste. Would anyone believe the waste factor for the two. Roof area total square footage of the roof. Pitched roof provide you protection again heavy rains.

The headache of using pythagoras and trigonometry can be spared by making use of these charts. A 10 slope roof should not be confused with a 10 pitch roof as a 10 slope roof means that the roof rises by ten inches for every foot of run.