Sizing A Roof For Shingles

To calculate the size of the roof you need to measure the size of the roof as if it were flat account for roof pitch calculate square footage and finally determine how many squares of material are required for the roof.

Sizing a roof for shingles.

30 divided by 3 10 if you have 2 layers of asphalt shingles on your roof you have a total of 20 square. Otherwise use the table or diagram below. 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. Admittedly it s rather confusing to call a shingle metric and then proceed to define it in imperial measure.

Medium slope roof pitch of 6. Metric shingle exposure is proportional to their larger size commonly 5 5 8 inches. Medium steep slope roof pitch of 9. Top 10 ways not to hire a roofer.

Steep slope roof pitch of 12 or 45 degrees. The first step in a free roofing estimate is measuring the roof dimensions. Iko was among the first roofing material manufacturers to introduce the metric size roofing shingle defined as being 13 1 4 inches long by 39 3 8 inches wide. Medium low slope roof pitch of 3 or 4.

Next divide your total area by 100 to calculate the number of roofing squares you ll need to buy. Metal roofing cost vs. If you need to purchase 30 bundles of asphalt shingles you have a 10 square roof. Be aware that if you have cedar shakes to remove you will need a bigger dumpster.

New roof installation prices per sq ft. The calculator above can handle all of this simply enter the length width and pitch and it will determine the size of the roof in squares. 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. Contractors start at the bottom of the roof and work across the roof s surface and up.

Pros cons of iko shingles costs unbiased iko roofing reviews. Roof replacement cost 2020. Now most 3 tab shingles typically referred to as metric shingles are larger. However 39 3 8 inches is the equivalent of one meter.

In the past most 3 tab shingles were imperial sized at 12 inches wide and 36 inches long with an exposure of 5 inches. Diy guide with diagrams. Some roofing shingles such as duration are applied with a 6 1 2 inch offset and a 5 5 8 inch exposure over a prepared roof deck. Asphalt shingles in 2020 metal roof prices.

How to measure and estimate a roof like a pro. Note that if your roof has a low slope below 3 pitch asphalt shingles are not the right material for it. 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.