Ask an assistant to stand several feet straight way from the wall in line with the center mark.
How do you measure a gable roof.
To measure a roof start by measuring the length and width of the building s exterior walls and multiplying them to get the area.
Using a metal measuring tape measure the distance horizontally across from mark to mark.
Gable roof square footage calculator.
Rise over run when calculating rise over run you will need to measure from the top of the wall to the roof peak.
Rise over run step 1.
If you look at a gable roof you can see that it is comprised of two basic geometric planes that meet at the top ridge.
Remember it doesn t have to be to scale or look pretty.
Roughly draw out your roof on a piece of paper.
1 roof square 100 square feet.
Measure both the width gable side and the length eave gutter side.
So if you divide your answer of a product of length times height by two you will get the area of a triangle.
Measure the height of the wall from ground level to the top of the eaves the point where the lowest part of the roof meets the top of the side walls.
We need to know the roof pitch or the slope of the roof.
Each geometric plane is a rectangle so we can use our formula for a rectangle base x height.
See determining roof pitch step 3.
Step 1.
Finally measure the height from the ground to the top of the roof ridge the highest point on the gable.
Hook the end of the.
L 30 feet h 12 feet 30 12 2 180 square feet.
Let s use a gable roof as an example.
Measure an outside wall from end to end where the gable roof comes to a peak above the wall.
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.
Starting at the peak of your gable roof measure down 36 along each side of your gable and make a mark.
The length l times the height h of a triangle is twice its area a2.
Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house.
Move to the adjacent wall where that.