Measuring A Roof For Shingles

Calculate the size of your roof and estimate how many bundles of asphalt shingles rolls of felt and squares of roofing material are needed for a new roof.

Measuring a roof for shingles.

Climb onto your roof and measure each section by its height and width. L h 2 area calculating an area of a triangle when estimating a roof. Dimensions measured from the ground. For a 12 000 sq ft 1 100 m 2 roof you ll need a minimum of 120 squares.

Required measurements include the following. 1 roof square 100 square feet. The length l times the height h of a triangle is twice its area a2. Measure and record your findings.

Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house. To measure for roofing shingles start by calculating the area of each plane or section of the roof. Then each measurement is recorded on the diagram applicable to that roof surface. Don t worry too much if you don t know how to measure a roof for shingles.

To calculate a rough estimate follow these steps. Measure both the width gable side and the length eave gutter side. The last step in measuring your roof for shingles is possibly the simplest because all it entails is using your measurements to calculate your roof s square footage. If you use a measuring tape you ll need someone to hold the tape while you measure the area.

Add the price per square of materials to get an estimated material cost. Roofing materials are typically packaged in squares each of which is the equivalent of 100 square feet 9 3 m 2 of roof space. Measure your roof accurately use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house. Dividing the total area of your roof by 100 will therefore help you figure out how many squares worth of shingles to order.

For each individual section of roof that you measured you will need to multiply the length by the width which will give you the square footage of that section. Record the measurements on your sketch of the roof. Your roofer will measure the surface of your roof to determine the total square footage which will dictate how many shingles must be purchased to fully cover the roof s planes. Next divide your total area by 100 to calculate the number of roofing squares you ll need to buy.