How To Estimate Roofing Materials

This metal strip which goes beneath the underlayment protects the edge of the roof from rot.

How to estimate roofing materials.

This is simply 100 square feet of roof. Calculate shingles or other roofing material. Calculating an area of a triangle when estimating a roof. The length l times the height h of a triangle is twice its area a2.

A square simply refers to a 10 x 10 square of roofing. 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. Measure for drip edge. 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.

Next you will need to use a roofing materials calculator. To get a 100 free roof quote enter your zip code above and fill out a simple estimate request form on the next page. Simply input the surface area of the roof choose from one of the available options and you will get your first roofing estimate. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

If you are unable to crawl on the roof you can estimate by measuring the footprint of the roof and finding the square footage of the footprint. Just plug in your house dimensions select your roof pitch relative roof difficulty choice of materials and let our calculator do the rest. 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 other 60 is labor.

1 roof square 100 square feet. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. Estimating other materials 1. Estimate the cost to install a new roof in a click of a button.

So multiply the length by the width of the roof and divide that number by 100. To find the squares divide the overall roof area by 100 and then round up. If this distance measures 4 inches you have a 4 in 12 pitch. Roofing contractors estimate projects and materials by the square so it is crucial to find this measurement to accurately estimate the amount of material needed.

Pitch measurement method 1. Gauge the amount of hip and ridge. One square of shingles equals 100 square feet. Three bundles of shingles equal one square of shingles.

But keep in mind that materials typically only account for 40 of the total cost of square roofing. 8 inches and you have an 8 in 12 pitch. At 4 nails per field shingle that s about 320 nails per square. On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof.