Houw To Measure To Roof

The length l times the height h of a triangle is twice its area a2.

Houw to measure to roof.

Most roofing contractors typically measure a roof by calculating the area of a roof and then adding on 10 for possible waste. L 30 feet h 12 feet 30 12 2 180 square feet. Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements. 1 roof square 100 square feet.

Remember it doesn t have to be to scale or look pretty. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. How to measure a roof in the sample below you will have 5 different calculations and that should match the number of sections you wrote down when you started. When roofing contractors are in high demand such as they are in florida after a hurricane this way of estimating a roof may be okay but in a tighter market you may need to have sharper estimating skills in order to compete with your competitors and make a profit.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. Stretch your tape measure along the walls from end to end. Calculate the pitch of the roof. Measure all your hips valleys ridges eaves and rakes.

Outside of the u s a degree angle is typically used. Roughly draw out your roof on a piece of paper. The hip style roof is in blue and the gable style roof is in red. First measure the length and width of each surface on the roof then multiply these values to get the square footage of that surface.

The pitch is the steepness of the roof. Use a pitch. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. Measuring your roof from the ground 1.

You will need to express this size in terms of square 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. Add all your measurements together to get your total square footage. The first step in a free roofing estimate is measuring the roof dimensions.

It does have to contain all the straight lines of your roof and an accurate measurement of.