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.
How many sq feet in a bundle of roofing shingles.
This means that if you are going to be using heavier shingles you will need to have more bundles to cover each square foot.
Specialty shingles such as iko armourshake are heavier and therefore packaged to cover 20 square feet per bundle or five bundles per square.
Normal architectural shingles are approximately 3 bundles per square.
One bundle of shingles covers approximately 33 square feet of roof depending on the size and weight of the shingles.
A square is 100sq feet if your using some of the heavier roofing most one bundle of shingle covers about 33 square feet of roof hence around 850 bundles of shingles will be needed for 28000 square feetroof.
The shingle bundles will be plastic or paper wrapped bundles that are made to be light enough for a single person to carry.
Also have a couple of bundles spare on hand to cover wind damage etc.
Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments.
The square footage of a roof is normally measured in squares of 100 feet.
Each square will need three bundles of shingles to cover it.
This would be 87.
There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these.
To find the amount of shingles you will need multiply the number of squares by three.
There are approximately 33 33 square feet in a bundle of standard composite shingles.
How many bundles of shingles will you need the average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.
A square of shingles will be the amount needed to cover an area of 100 square feet.
A square is a 10 foot by 10 foot area and requires three bundles of shingles for coverage.
Heavier three tabbed shingles and laminated shingles require four or sometimes five bundles to cover a square.
A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.
However shingles are packaged in a way that they are light enough for the average person to carry around.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
3 bundles per square.