The length l times the height h of a triangle is twice its area a2.
How to measure how many squares on a 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.
Because each 100 square feet of roof is one.
Thus in a simple style house you ll only have to click on the corners.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
If this distance measures 4 inches you have a 4 in 12 pitch.
To find the squares divide the overall roof area by 100 and then round up.
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.
Pitch measurement method 1 1.
Then calculate the pitch of the roof by placing a level against it angling the level so the bubble is centered and measuring the distance between the end of the level and the roof.
8 inches and you have an 8 in 12 pitch.
A square simply refers to a 10 x 10 square of roofing.
Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure.
Make a sketch of your roof before you go out to measure it.
This is simply 100 square feet of roof.
You will need to express this size in terms of square feet.
To measure a roof start by measuring the length and width of the building s exterior walls and multiplying them to get the area.
Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments.
The first step in a free roofing estimate is measuring the roof dimensions.
If you were to click on the peaks it wouldn t give you an accurate reading of your measurement.
If your roof is 5 000 square feet you will have 50 squares.
A home s roof is measured in squares.
Convert the area to roofing squares.
1 roof square 100 square feet.
If you are replacing your entire roof you will need to purchase shingles in 50 squares to sufficiently cover your 5 000 square foot roof.
L h 2 area calculating an area of a triangle when estimating a roof.
How to estimate roofing materials.
For instance if the roof is 1550 square feet then it is 16 squares.
In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.