How do I calculate how many shingles I need?

How Many Roofing Shingles Do I Need?

1. Measure the length and width of each plane on the roof (including dormers) then multiply length times width.
2. Add the square footage of each of the planes together.

How many sheets of plywood do you need for a roof?

Divide the total roof area by 32 to get the number of sheets you will need to cover the roof. A typical 4 foot by 8 foot sheet of plywood covers 32 square feet. If your roof area is 1,600 square feet, 1,600 divided by 32 will mean you need about 50 sheets to cover the roof.

How many bundles of shingles do I need?

How Many Bundles of Shingles Will You Need. The average bundle of shingles covers 33.3 ft2, so three bundles of shingles are needed per square. 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.

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Does new roof replace plywood?

If you are getting a new roof, while you may not necessarily need to have the plywood decking replaced, you should have it carefully inspected by a qualified roofing contractor. When considering a contractor for your project, be sure to address the subject of plywood replacement, and what the cost per plank will be.

How much area does 1 pack of shingles cover?

Each bundle covers 33.3 sq. ft. of roof area—which is close enough to the 32 sq. ft.

How many bundles of shingles do I need for 2000 square feet?

The number of bundles or squares you need will depend on the surface area of your roof, and its pitch or slope. For example, a 2,000 square foot roof will require 20 squares or 60 bundles.

How much does a sheet of plywood cost?

The cost of a sheet of plywood will depend on the size and where it’s purchased. Depending on the thickness, plywood can cost anywhere from \$5 to as much as \$55 for a 4×8 sheet. For example, a 4×8 that 1/4″ thick can cost \$6, while a 4×8 that is 11/32″ thick can cost around \$15.

How much is a sheet of roofing plywood?

Your price could vary depending on how much the roofing company charges for labor, but generally you can expect to spend between \$70 to \$100 for each sheet of plywood.

How many shingles do I need for a 24×24 garage?

Secondly, how many tiles do I need for a 24×24 garage? Three packs correspond to a square. Each square is equal to 100 square meters. In the example above, three squares, or 300 square feet of shingle, are needed to cover the garage roof.

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How many bundles of shingles do I need for 100 square feet?

However, the vast majority of shingles require only 3 bundles per 100 square feet. For most shingle types, you’ll need 3 bundles to make a square of finished roof, which is 100 square feet. If you have a roof area of 3000 square feet, you’ll need 90 bundles of shingles.

How often does roof plywood need to be replaced?

How long does roof plywood last? Roof plywood should last twenty years, so long as it is not exposed to water.

How do I know if my roof plywood is bad?

Other signs of this will be ceiling and wall spots, the material beginning to buckle and fall away, and similar issues. As it worsens, you may also see sagging rooflines and buckles or other deformations visible underneath the shingles or other materials, as well.

How long does plywood last on a roof?

There are a few averages you can expect, but they are dependent on these factors. Plywood siding, such as T-111 should give at least a 35 year life expectancy, if finished properly; but there are many cases of it lasting over 50 years. Roof sheathing should last 30 to 40 years or to put it another way, two roofs.