How To Measure Roof Size For Shingles

Remember that the length and width need to be found for the roof not the house so take into account that the roof overhangs the building.

How to measure roof size for shingles.

So if your roof is 26 000 square feet you ll need 260 squares to coat it. Measure both the width gable side and the length eave gutter side. Then each measurement is recorded on the diagram applicable to that roof surface. Measure your roof accurately use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house.

Keep in mind that this estimation won t include any areas like garages or enclosed patios that the roof covers. Finding the total roof area. 1 roof square 100 square feet. You will then have to get the measurement of the rake of the roof.

Required measurements include the following. To do this you need to note that one tab will be equal to 1 foot. L h 2 area calculating an area of a triangle when estimating a roof. This can be done by multiplying the length in feet by the width in feet to get the area measurement.

The length l times the height h of a triangle is twice its area a2. Once the area of the roof s footprint is known the overall roof area can be found by accounting for the pitch of the roof. So if you divide your answer of a product of length times height by two you will get the area of a triangle. If the existing shingles are standard 3 tab shingles you can get this measurement by taking note of the number of tabs along the eaves and ridges then determine the length in feet.

Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house. Then determine the area of the roof as if it were flat.