8 inches and you have an 8 in 12 pitch.
How to measure sq of roof from groun.
For instance if the roof is 1550 square feet then it is 16 squares.
The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials.
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.
If a section is 120 feet 37 m x 100 feet 30 m its total square footage would be 12 000 square feet 1 100 m 2.
A square simply refers to a 10 x 10 square of roofing.
The roof area for a hip end is the same as for a gable end the intersection is equivalent to a hip slightly conservative so there is usually no need to consider triangles when measuring a roof.
Thus in a simple style house you ll only have to click on the corners.
The roof surface area would be 24.
Ask the assistant to hold one end of the tape in line with the outer edge of the roof at one end and measure to the opposite outer end of the roof.
If this distance measures 4 inches you have a 4 in 12 pitch.
The first technique is referred to as the shingle count method which is used for estimating the measurements of all rectangular shaped sections of a roof.
To sum it up each individual tab on a 3 tab shingle measures approximately 12 wide by 6 high.
If you use ground measurements to determine your roof squares you will need to also compensate roof overhang and slopes to get an accurate count.
Make a note of the square footage of each square or rectangular section on your diagram.
Outline the roof at the points that are on the same level or elevation to ensure that you re getting an accurate calculation of your roofing measurements.
To find the squares divide the overall roof area by 100 and then round up.
This is simply 100 square feet of roof.
Be sure to find the area of any dormers on your roof as well.
Multiply the angle measurement for the pitch of.
How to estimate roofing materials.
Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments.
Pitch measurement method 1 1.