On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof.
Look up square foot of my roof.
Hope it helps alan j warshawer august 13.
8 inches and you have an 8 in 12 pitch.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches.
If you have a roof section that s 30 feet 9 1 m long and 12 feet 3 7 m high multiplying those dimensions would give you an area of 180 square feet 17 m 2.
This is the steepness of your roof.
This tool is useful for finding the approximate acreage or a tract of land the square footage of a roof or any other instance where you need a good estimate of the area of something.
The reason this is important is because this angle will greatly affect the square footage of the roof deck.
As you add points the area will be updated below and converted into acres square feet meter kilometers and miles.
Using this tool will be very helpful for you in finding out the acreage or the tract of land of your property.
If this distance measures 4 inches you have a 4 in 12 pitch.
Roofers use this because it s easier to say the.
Because each 100 square feet of roof is one.
Multiply the length and width of each square or rectangle shaped plane.
How to calculate square feet of a roof step 1.
Each time you add points the area will update and there is a box below that will convert this into acres meters kilometers miles and finally square feet.
Calculate each plane separately.
It is often compared to slope but is not exactly the same.
Measure the length and width of every roof plane or surface.
Include dormers the small outjuttings over attic.
If you re researching a new roof it s easy to become overwhelmed.
10 add up the areas of each section to get your total square footage.
Convert the area to roofing squares.
Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material.
If the house has an irregular shape measure each part separately figure the separate areas and add them together.
Pitch measurement method 2 2.
Measure and mark the square footage of each triangular section carefully as these tend to differ in size.
Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.