Roof Multiplier For 12 12 Pitch

The value arrived at 928 reflects the square feet of the roof.

Roof multiplier for 12 12 pitch.

A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped 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. Now divide the rise by the multiplier to get the pitch eg. The pitch of this roof is 4 8 12.

Get your roof size by using this roof pitch calculator. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. Roof pitch multiplier 13 over 12 1 08. Helps determine what materials are suitable for your roof.

The calculator above can handle much of this math. The pitch of the roof is the rise over a 12 inch run. Roof pitch area multipliers. 48 10 4 8.

If the home measures 20 x 40 and has a 7 12 roof then to calculate the slope of the roof follow these steps. We included a roof pitch chart below the 7 12 example image and the calculator below that. Using the pythagorean theorem we find that for every 12 inches the roof spans horizontally there are 13 inches of actual roof. Multiply 20 and 40 which equals 800.

What is the multiplier. Since pitch is the rise over a 12 inch run divide the run by 12 to get the multiplier in this case 120 12 10. Find the value of 7 12 from the roof slope multiplier table which is 1 16. C sqrt 5 2 12 2 sqrt 169 13 in.

A roof of pitch 7 12 30 is manageable but caution should be taken. 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. 800 multiplied by 1 16. Typically the steeper the roof is the higher the price will be.

Use our roof pitch calculator to find the pitch of your roof. So 2400 x 1 12 2 688 2 88 sqs added for pitch. Roof is 6 12 pitch and measures at 2 400 square feet. Image 1 12 to 12 12 roof pitch 7 12 pitch.

Roofers typically refer to it as a pitch and can be found by factoring the rise over a 12 inch run. Why figure what your roof pitch is. Roof pitch degree table. Then the roof multiplier is.

100 1 054 105 4ft 2. For example a roof with a pitch of 1 cannot use metal shingles. Pitches between 8 12 and 10 12 33 40 are also considered walkable. If this isn t practical then perform the same measurement on the underside of the roof.

For example a 4 12 pitch roof that is 100 square feet.