How Do Measure A Roof For Shingles

Calculate the square.

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. Then determine the area of the roof as if it were flat. If the planes aren t rectangles this may be complicated. Divide the roof into manageable sections.

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. Start by measuring the length and width of the roof in feet as you re standing on the ground. Required measurements include the following. Next divide your total area by 100 to calculate the number of roofing squares you ll need to buy.

Next to calculate the square footage of each rectangular plane multiply the length by the width. Outside of the u s a degree angle is typically used. 1 roof square 100 square feet. Don t round your roof measurements up or down.

Rounding before you begin multiplying and adding may throw off the accuracy of your final estimate. 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. To do this you need to note that one tab will be equal to 1 foot.

To calculate a rough estimate follow these steps. How to measure a roof for shingles draw a rough layout of your roof. 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. 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.

Then each measurement is recorded on the diagram applicable to that roof surface. 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. L 30 feet h 12 feet 30 12 2 180 square feet. To measure for roofing shingles start by calculating the area of each plane or section of the roof.

This will be done once it s time to determine the number of shingles you need. Measure and record your findings. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Climb onto your roof and measure each section by its height and width.

You will then have to get the measurement of the rake of the roof. This doesn t have to be an exact sketch but.