How Much Roofing Paper Do I Need For 3 Square

When shingles come three bundles to the square there are 29 standard sized shingles 12 in.

How much roofing paper do i need for 3 square.

Cecil venturella march 3. Roofing is sold in 100 square foot lots so you need 21 squares of shingles and 2 100 square feet of 15 pound 15 felt paper and about 50 pounds of galvanized roofing nails. For a new roof you will also need the same amount of underlayment. Heavier three tabbed shingles and laminated shingles require four or sometimes five bundles to cover a square.

It takes 3 bundles per square so you will multiply 51 28 by 3 and you will get 153 84. The result is 240 and this means you would need 240 squares of shingles to cover that roof. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. In order to know the appropriate amount of roofing felt to use the roof pitch will need to be calculated first.

It provides extra waterproofing to protect the wood until shingles are installed. This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. Explore a number of housing related calculators as well as hundreds of other calculators covering topics such as finance math health fitness and more. There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these.

Since transportation is a major cost factor expect prices to vary by location. The most common type of shingle called a three tab or strip shingle is generally packaged three bundles per square. Take the square foot of 5 128 divide by 100 100 sq ft is equal to one square so you have 51 28. Multiply that by 2 to include the back roof area and you have 2 048 square feet.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a 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. Figuring out the roof area is the first step to determine how many bundles you ll need to order. Remember when estimating required amounts that you need to overlap the felt.

Roofing paper or felt normally comes in about 150ft rolls and are 3ft wide. Add a square for waste so you will need 157 bundles. 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. With that as background you are now ready to estimate how many shingles you will purchase for your roof project.

By 36 in in each bundle. The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.