The site below that explains the pitch - how to measure it with a calculator to use with pitch and calculate the total footage of your roof
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The square footage of your house is not the same as the square footage of your roof if there is any pitch. If you are asking aboutasphalt shingles, generally each bundle covers 33.3 square feet. Therefore find the square footage of your roof, divide it by 33.3 to find the number of bundles, then multiply the original square footage by 5-10% to get the number of additional bundles for cutoffs and starter strip. The variation in percentage accounts for the number and length of valleys of the roof. Example:[@5%]roof =1500 ft2 --> (1500/33.3=45.05) (1500x.05=75 -->75/33.3=2.25)45.05 + 2.25= (48) bundles
Unless you have a flat roof, no; the surface area of the roof will be larger than the ground area of the building.
You cannot calculate the square footage of a house roof like this (unless you have a flat roof). The simplest way would be to go up on your roof and measure its different surfaces, however if you dont want to do that, you would need to know several differen things to calculate the surface area -- such as the pitch and angel -- how much hangover you have. Basically you should save yourself time and go up on your roof and measure it
a roofing square is 100 sf. There are formulas out there that allow you to use the pitch and outer dimensions of the roof to figure out the number of squares. If not, calculate the square footage and divide by 100 - that's the number of squares you have...
To find the sq. ft of a roof you have to measure the length and the width and multiply those figures together. Then you divide that figure by 100 and it will tell you how many squares of shingles it will take to cover it.
The square footage of your house is not the same as the square footage of your roof if there is any pitch. If you are asking aboutasphalt shingles, generally each bundle covers 33.3 square feet. Therefore find the square footage of your roof, divide it by 33.3 to find the number of bundles, then multiply the original square footage by 5-10% to get the number of additional bundles for cutoffs and starter strip. The variation in percentage accounts for the number and length of valleys of the roof. Example:[@5%]roof =1500 ft2 --> (1500/33.3=45.05) (1500x.05=75 -->75/33.3=2.25)45.05 + 2.25= (48) bundles
Unless you have a flat roof, no; the surface area of the roof will be larger than the ground area of the building.
The accurate answer depends on square footage & pitch.
If you do not have access to a roof framing book, I would use a tape and measure it. Length x width = square footage. My book says you should come up with : 11.33 x 12 = 135.96 sq ft
You cannot calculate the square footage of a house roof like this (unless you have a flat roof). The simplest way would be to go up on your roof and measure its different surfaces, however if you dont want to do that, you would need to know several differen things to calculate the surface area -- such as the pitch and angel -- how much hangover you have. Basically you should save yourself time and go up on your roof and measure it
length x width of each roof segment.
315
By taking the square footage and the actual pitch of the roof and using a chart that will give you a 10 year frequency (average rain fall) per hr. Also a major factor is if the roof surface is for weather protection only or promenade
a roofing square is 100 sf. There are formulas out there that allow you to use the pitch and outer dimensions of the roof to figure out the number of squares. If not, calculate the square footage and divide by 100 - that's the number of squares you have...
To find the sq. ft of a roof you have to measure the length and the width and multiply those figures together. Then you divide that figure by 100 and it will tell you how many squares of shingles it will take to cover it.
from the peak down to the beginning of the gutter --and then from side to side and then multiply this number x 2 since there are two sides on the roof-- then devide the total you get by 100 and you will find out how many square.
Use the square footage of your house, and the size of your roof should be about the same. Be carefull not to include the yard in the footage or anything that is not covered by the roof, then divide the number by the number of stories your house is.