1 roofing square 100 square feet.
Roofing bundle square.
Shingles are packaged in bundles that include a number of strips of roofing.
But be careful not all shingle brands are packaged three bundles to a square.
Asphalt shingles are typically packaged with this in mind but if a package of shingles covered an entire 100 square foot square it would be too heavy to handle.
Normal architectural shingles are approximately 3 bundles per square.
Of your roof area which is close to the sheet coverage area of 32 sq.
Since transportation is a major cost factor expect prices to vary by location.
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.
Four bundles to a square.
The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.
Therefore order one bundle for every sheet of roof sheathing you have.
If you are using three bundles to a square calculating bundle numbers is simple.
This would be 87.
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.
Each of your bundles can cover 33 3 sq.
Twenty seven strips equal a bundle generally speaking and roughly three to four compose a square.
So most popular shingles are sold such that three bundles are needed to cover one square of roof area.