Roof Area Conversion Factors

When outfitting your residential or commercial structure with products from everlast roofing it s important to know the incline or pitch of your roof.

Roof area conversion factors.

Download the slope chart pdf. 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. The headache of using pythagoras and trigonometry can be spared by making use of these charts. The roof slope factor chart also consists of conversion factors to determine the slope of the roof.

Now you re ready to price out the materials. Take your area result and multiply it by the pitch multiplier or slope correction factor found in the table above to arrive at the roof s surface area. You can consult the following chart to discover the slope factor and hip valley factor. Pitch of roof slope factor valley hip factor.

Enter 6 into the calculator slope factor 1 1180 multiply the roof length by the gable wall length 40 24 960 multiply this amount by the slope factor 960 1 1180 1073 28 the area of this roof 1073 3 sq. 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.