It is often compared to slope but is not exactly the same.
Howmany sq ft is roof on 1500.
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.
The slope of your roof will factor into how many additional square feet are on your roof.
To find the squares divide the overall roof area by 100 and then round up.
If you have a 2 story house you divide total square footage by 2 before multiplying by 125.
Outside of the u s a degree angle is typically used.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.
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.
1 roofing square 9 290304 m 3.
Take your ground floor square footage and multiply by 125.
For instance if the roof is 1550 square feet then it is 16 squares.
The typical factor is 25 more roof than house square footage.
The total amount of roofing material you need is 17 300 1 730 19 030 square feet.
100 square feet 1 roofing square 9 290304 cubic meters si unit.
Using an international foot of exactly 0 3048 meters length.
This is simply 100 square feet of roof.
1 ft x 1 ft.
10 feet by 10 feet 100 square feet.
Multiply the square footage of your roof by 1 to get the 10 percent waste allowance.
How to estimate roofing materials.
Pitch measurement method 2.
If this distance measures 4 inches you have a 4 in 12 pitch.