Measuring A Roof For Shingles

Climb onto your roof and measure each section by its height and width.

Measuring a roof for shingles.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. 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. The length l times the height h of a triangle is twice its area a2. Calculate the square.

Divide the roof into manageable sections. You will then have to get the measurement of the rake of the roof. Place the end hook of the tape on the corner and run it all the way to the opposite corner of the house. 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.

Measure and record your findings. Don t worry too much if you don t know how to measure a roof for shingles. But if you re curious how the measuring process works think back to your geometry classes in school. 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.

1 length of all slopes measure from ridge to eave length 2 measurement of all hip rafters length from ridge to eaves 3 measurement of all roof eaves areas bottom roof perimeter areas 4 measurement of all valley areas where two opposing. 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. L 30 feet h 12 feet 30 12 2 180 square feet. To figure out the area of a square or rectangular room measure length and width and multiply them together to get the.

Keep in mind that this estimation won t include any areas like garages or enclosed patios that the roof covers. This doesn t have to be an exact sketch but. To do this you need to note that one tab will be equal to 1 foot. Measure both the width gable side and the length eave gutter side.

To calculate a rough estimate follow these steps. 1 roof square 100 square feet.