How Many Shingles To Roof My House

Most building codes allow for two layers of asphalt shingles on a house so stripping off everything down to the plywood sheathing may not be your only choice.

How many shingles to roof my house.

Divide the total footage by 100 to determine the number of squares in the roof. For the number of ridge caps multiply the length of the hip or ridge by twelve and divide it by five. Asphalt shingles range in price from about 25 per bundle for a standard 3 tab style to around 50 75 or more for an upgraded architectural style. This house is 1000 square feet.

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 most common roofing materials used in the united states include shingles membrane roofing and ceramic tile all of which have different life spans. It is common to use 3 bundles to a square of shingles. The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.

When you are using 3 bundles for a square you will be getting 29 standard shingles in each bundle. It takes 3 bundles to cover a square if you use 3 tab shingles the most common type. If your roof is in good shape but has some damage to one side from a downed tree or has lost shingles in a wind storm an overlay is worth considering. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.

Nailing new shingles over existing ones is less expensive and faster requiring less labor but it also means you lose the chance to assess the sheathing for signs of water damage. How to figure how many squares are needed for shingles. However if you are using heavier shingles you will require 4 to 5 bundles for a square. Roof length measured in feet roof width measured in feet roof pitch roof type either gable or hip.

It requires 18 squares of shingles. Measure the length and width of each rectangular or square area of the roof and multiply the length times the width to gain the total. This roof shingle calculator requires four basic inputs. Since there are twenty six shingles in a bundle of twenty year shingles which is fine for starters and edges divide the result by twenty six.

Since transportation is a major cost factor expect prices to vary by location. If a roof insurance estimate says it will take 25 33 sq to re roof my house and the roofer gets out and after removing the old shingles determines it will need to have new wood put down due to rot and age then about how many sheets of plywood should it take.