How Many Bundles Of Shingles For 850sq Feet Of Roof

Compute the area of the whole roof and determine the number of bundles.

How many bundles of shingles for 850sq feet of roof. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. 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. It is common to use 3 bundles to a square of shingles. When shingles come three bundles to the square there are 29 standard sized shingles 12 in.

Since transportation is a major cost factor expect prices to vary by location. To find the amount of shingles you will need multiply the number of squares by three. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area. Your roofer will know that steeper roofs use more shingles than lower sloped roofs for the same house size and there are established slope multiplier factors to make this calculation simple see table below.

With that as background you are now ready to estimate how many shingles you will purchase for. 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. 33 square feet per bundle 100 square feet per square 4 nails per shingle.

There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these. Find the total square footage of your roof by multiplying the width by the length and then divide that number by 100 and you will get the number of squares you need to cover. However if you are using heavier shingles you will require 4 to 5 bundles for a square. However shingles are packaged in a way that they are light enough for the average person to carry around.

Heavier three tabbed shingles and laminated shingles require four or sometimes five bundles to cover a square. 1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. 100 sq ft 21 shingles per bundle. 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. 3 bundles per square. Each square will need three bundles of shingles to cover it. Be sure to add a couple of bundles for double first row and capping.

For example a very steep roof on a 1 000 square foot attic will need more shingles than a lower sloped roof on the same sized attic.