But be careful not all shingle brands are packaged three bundles to a square.
Roofing bundle square.
Four bundles to a square.
Therefore order one bundle for every sheet of roof sheathing you have.
The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.
1 roofing square 100 square feet.
The term roofing square and roof pitch are the most commonly used terms in the roofing industry.
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.
So most popular shingles are sold such that three bundles are needed to cover one square of roof area.
Of your roof area which is close to the sheet coverage area of 32 sq.
Shingles are packaged in bundles that include a number of strips of roofing.
It does not matter how you arrive at 100 square feet.
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.
Since transportation is a major cost factor expect prices to vary by location.
Normal architectural shingles are approximately 3 bundles per 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.
If you are using three bundles to a square calculating bundle numbers is simple.
10 feet x 10 feet 100 square feet or 1 roofing square 5 feet x 20 feet 100 square feet or 1 roofing square.