Roof Multiplier For 12 12 Pitch

Get your roof size by using this roof pitch calculator.

Roof multiplier for 12 12 pitch.

800 multiplied by 1 16. The pitch of the roof is the rise over a 12 inch run. We included a roof pitch chart below the 7 12 example image and the calculator below that. 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.

Why figure what your roof pitch is. The first thing that you need to understand before picking any selections from a roof pitch multiplier chart is to ensure that it s affordable. 48 10 4 8. 100 1 054 105 4ft 2.

Multiply 20 and 40 which equals 800. Roof pitch degree table. If the home measures 20 x 40 and has a 7 12 roof then to calculate the slope of the roof follow these steps. Helps determine what materials are suitable for your roof.

C sqrt 5 2 12 2 sqrt 169 13 in. 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. 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. So 2400 x 1 12 2 688 2 88 sqs added for pitch.

Then the roof multiplier is. Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area. Find the value of 7 12 from the roof slope multiplier table which is 1 16. Roof is 6 12 pitch and measures at 2 400 square feet.

If this isn t practical then perform the same measurement on the underside of the roof. The pitch of this roof is 4 8 12. A roof of pitch 7 12 30 is manageable but caution should be taken. For example a roof with a pitch of 1 cannot use metal shingles.

What is the multiplier. 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. Using the pythagorean theorem we find that for every 12 inches the roof spans horizontally there are 13 inches of actual roof. Roof pitch area multipliers.

A flat roof has a pitch of 1 meaning the material needed is 1. Roofers typically refer to it as a pitch and can be found by factoring the rise over a 12 inch run. For example a 4 12 pitch roof that is 100 square feet. Multiply step 1 and step 2 i e.

The calculator above can handle much of this math. Typically the steeper the roof is the higher the price will be. Image 1 12 to 12 12 roof pitch 7 12 pitch. Use our roof pitch calculator to find the pitch of your roof.

Pitches between 8 12 and 10 12 33 40 are also considered walkable.