How to estimate roofing materials.
How to measure sq of roof from groun.
If this distance measures 4 inches you have a 4 in 12 pitch.
Make a note of the square footage of each square or rectangular section on your diagram.
To convert the square footage to roof squares divide the square footage by 100.
For instance if the roof is 1550 square feet then it is 16 squares.
Multiply the angle measurement for the pitch of.
If you were to click on the peaks it wouldn t give you an accurate reading of your measurement.
To find the squares divide the overall roof area by 100 and then round up.
8 inches and you have an 8 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.
The roof surface area would be 24.
To sum it up each individual tab on a 3 tab shingle measures approximately 12 wide by 6 high.
Just multiply the length and width dimensions.
The roof area is simply 114x18x2 plus 30x18x2 giving 5184 square feet which is perfectly adequate for estimating materials.
Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments.
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.
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.
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.
Be sure to find the area of any dormers on your roof as well.
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.
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.
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.
Thus in a simple style house you ll only have to click on the corners.