How To Estimate the Size of Your Roof

Roofing materials are measured in squares. When you are pricing a new roof or a replacement roof it is helpful to understand how much of the roofing material you will need to purchase. Of course it isn’t practical (or very safe) for the average person to climb up on the roof with a tape measure. Luckily there is an easy way to estimate the size of your roof from the safety of the ground below.


To get a ballpark idea of how big your roof is and how much roofing material will be required for your new roof or replacement roof all you need to do is visualize your roof being divided into 10′ x 10′ squares. This is a simple thing for most anyone to visualize. When you have this measurement in your head just look at your roof and see approximately how many of these 10′ x 10′ squares would cover your roof. Remember to visualize this for the whole roof. If your roof has a lot of architectural elements to it you may need to divide your “mental square” in half. This is not an exact science and you are simply trying to estimate.


Although this won’t give you the exact detailed size of your roof it will help you when you are discussing size and price with your roofing contractor.