Normal architectural shingles are approximately 3 bundles per square.
Roofing bundle square.
This would be 87.
The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.
Four bundles to a square.
The term roofing square and roof pitch are the most commonly used terms in the roofing industry.
10 feet x 10 feet 100 square feet or 1 roofing square 5 feet x 20 feet 100 square feet or 1 roofing square.
But be careful not all shingle brands are packaged three bundles to a square.
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.
If you are using three bundles to a square calculating bundle numbers is simple.
So most popular shingles are sold such that three bundles are needed to cover one square of roof area.
It does not matter how you arrive at 100 square feet.
Each of your bundles can cover 33 3 sq.
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.
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.
1 roofing square 100 square feet.
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.