A square of shingles covers 100 square feet of a standard roof.
Number of roof shingles per square.
Specialty shingles such as iko armourshake are heavier and therefore packaged to cover 20 square feet per bundle or five bundles per square.
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.
The hardest part is how you determine the number of bundles it requires you to order to cover all your roof areas.
There will also be hip ridge and starter shingles needed.
Shingles are packaged in lightweight bundles intended for easy transport up and down a ladder and across precarious heights.
To find the amount of shingles you will need multiply the number of squares by three.
Thicker shingles will be as much as 4 or 5 bundles per square.
This would be 87.
Normal architectural shingles are approximately 3 bundles per square.
How many shingles in a square once you have a three bundle pack to cover a square you will have 29 x 12 inches by 36 inch standard sized shingles per bundle.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
A typical bundle of three tab shingles has 29 standard sized shingles.
Each square will need three bundles of shingles to cover it.
How many bundles of shingles in a square you can t merely go by the number of shingles in a bundle since shingle size and coverage vary from one brand to the next.