How To Estimate Roof Size

A 3 000 square foot roof would be 30 squares.

How to estimate roof size.

How to estimate the size of your roof step one. Use a pitch. Fill in the details of your roof. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.

Calculate the pitch of the roof. Find the length and width of the building s exterior walls. Roofing materials are determined by the number of squares a roof is. By doing this you will have a much easier time figuring out the roof.

Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material. The base length is simply the distance from the second corner to the third corner on the house s long side. Measuring your roof from the ground 1. Stretch your tape measure along the walls from end to end.

The other 60 is labor. Sketch out your roof on grid paper. While it is possible to estimate the amount of necessary materials using only the total roof area measurement as can be seen from the table depending how large the pitch of the roof the actual area of the roof can differ by up to 2 236 from the measured total area at a pitch of 24 12. The pitch is the steepness of the roof.

But keep in mind that materials typically only account for 40 of the total cost of square roofing. As such while it can be cumbersome measuring the area and pitch of each part of the roof and multiplying by the corresponding correction factor will result in the most accurate estimate of necessary. The base width is the distance from one corner of your roof to the other at its base on the short side of your house. Next you will need to use a roofing materials calculator.

To calculate the square of a roof take the number of square feet you came up with and divide it by 100. With an online roofing calculator you will usually be able to drill down a bit deeper in order to see a fine grained cost breakout on a sq ft basis. To find the pitch of your roof you ll first. Take note of things like valleys diagonal distances protrusions.