When you need to replace the roof of your house, the most important thing that you’ll have to do is figuring out the roof area. This is not as complicated as you may think it is. For those who are afraid of heights or climbing ladders , there are some methods to measuring a roof from the ground. The result will not be 100% accurate, but you’ll be very close to get a fairly precise estimate.
A roofing calculator for quick and easy measurements
First you have to measure each side of your house from the ground using a measuring tape. If you multiply the length by the width you’ll know the ground area of your house. Many times a house does not have a square or rectangular shape. If your house has an irregular shape, you have to divide the ground area in separate parts and figure their area. To know the total area of the house, simply add them together.
The second step is to convert the area of the house in roofing squares. Each 100 square feet of roof is one roof square. So you have to divide house area by 100. If your house area is 2000 square feet, the number of roofing square for the roof will be 20. In metric system, the house area will be approximately 186 square meters, because 1 meter is equal to 10.76 feet. The number of roofing squares for 186 sq. meters is also 20.
The next step is calculation of the roof pitch. Roofs have one of three pitches: low, medium or high. A low pitch rises 3 inches every 12 inches of base horizontal length. A medium pitch rises 6 to 9 inches every 12 inches of base horizontal length. A high pitch roof rises more than 9 inches for every 12 inches of base horizontal length. You can estimate the roof pitch by sight.
Finally, to get the square roof area multiply the number of roofing squares for a low-pitch roof by 1.06 to 1.42 depinding of the roof’s pitch. to get the square roof area.
Luckily for you, because we know that almost everybody hates calculations and some people are not so good at estimations, we have for you a roofing calculator, which will do all the measurements for you. With CalcMonster Roofing Calculator you’ll have a more accurate measurement of your square roof area.