How Do Measure A Roof For Shingles

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 do measure a roof for shingles.

Rounding before you begin multiplying and adding may throw off the accuracy of your final estimate. Measure and record your findings. Next divide your total area by 100 to calculate the number of roofing squares you ll need to buy. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

To do this you need to note that one tab will be equal to 1 foot. So if you divide your answer of a product of length times height by two you will get the area of a triangle. To measure for roofing shingles start by calculating the area of each plane or section of the roof. 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.

Then determine the area of the roof as if it were flat. Start by measuring the length and width of the roof in feet as you re standing on the ground. 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. Don t round your roof measurements up or down.

You will then have to get the measurement of the rake of the roof. L 30 feet h 12 feet 30 12 2 180 square feet. First you must measure the length and width of each plane of the roof including dormers. Then each measurement is recorded on the diagram applicable to that roof surface.

The length l times the height h of a triangle is twice its area a2. Required measurements include the following. 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. Next to calculate the square footage of each rectangular plane multiply the length by the width.

This will be done once it s time to determine the number of shingles you need. To calculate a rough estimate follow these steps. Calculate the square. If the planes aren t rectangles this may be complicated.

Outside of the u s a degree angle is typically used. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. 1 roof square 100 square feet. Write out each measurement exactly as it appeared on your tape measure to the nearest 1 2 inch 1 3 cm.

Climb onto your roof and measure each section by its height and width. How to measure a roof for shingles draw a rough layout of your roof.