Measuring A Roof For Shingles

Measure and record your findings.

Measuring a roof for shingles.

Measure your roof accurately use a measuring tape preferably 50 or 100 feet long and get exact ground dimensions of your house. 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. 1 roof square 100 square feet. L h 2 area calculating an area of a triangle when estimating a roof.

Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house. If you use a measuring tape you ll need someone to hold the tape while you measure the area. Climb onto your roof and measure each section by its height and width. The length l times the height h of a triangle is twice its area a2.

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. To measure for roofing shingles start by calculating the area of each plane or section of the roof. For a 12 000 sq ft 1 100 m 2 roof you ll need a minimum of 120 squares. Don t worry too much if you don t know how to measure a roof for shingles.

Roofing materials are typically packaged in squares each of which is the equivalent of 100 square feet 9 3 m 2 of roof space. 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. How to measure a roof for shingles step by step the process of accurately measuring a roof involves first making a diagram of the roof to show the basic shapes of each roof plain and how they relate to one another. Measure both the width gable side and the length eave gutter side.

But if you re curious how the measuring process works think back to your geometry classes in school. Record the measurements on your sketch of the roof. To calculate a rough estimate follow these steps. Add the price per square of materials to get an estimated material cost.

Next divide your total area by 100 to calculate the number of roofing squares you ll need to buy. Dimensions measured from the ground. So if you divide your answer of a product of length times height by two you will get the area of a triangle. 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.