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.
How many roofing shingle bundles in a square.
For example a 2 000 square foot roof has 20 squares of shingles.
Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments.
To find the amount of shingles you will need multiply the number of squares by three.
With the metric square each bundle contains 22 shingles.
Each square will need three bundles of shingles to cover it.
How many shingles in a square.
It is common to use 3 bundles to a square of shingles.
Read the label carefully as some brands need a bit more than three bundles to cover a square.
Therefore a 40 square roof would require approximately 120 bundles of shingles.
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.
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.
It typically takes 3 bundles of shingles to cover each square of a roof.
But be careful not all shingle brands are packaged three bundles to a square.
However shingles are packaged in a way that they are light enough for the average person to carry around.
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.
Each shingle is 13 1 4 inches by 39 3 4 inches and the square covers 99 98 square feet using 65 shingles.
To determine how many squares a roof is just divide its square footage by 100.
This would be 87.
When you are using 3 bundles for a square you will be getting 29 standard shingles in each bundle.
Four bundles to a square.
Once you look at the more substantial three tabbed variety these require four per square and sometimes possibly five to cover the same square.
It typically takes three bundles of standard three tab asphalt shingles to cover one square on a roof.
A roof square is equal to 100 square feet so each bundle covers roughly 33 1 3 square feet.
A square of shingles is a roofing term for 100 square feet.
However if you are using heavier shingles you will require 4 to 5 bundles for a square.
With heavier materials a square might consist of four or five bundles each with fewer shingles than the normal bundle.
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.
Owens corning offers a metric square of shingles.