The term roofing square and roof pitch are the most commonly used terms in the roofing industry.
Roofing bundle square.
Each of your bundles can cover 33 3 sq.
Therefore order one bundle for every sheet of roof sheathing you have.
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.
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.
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.
10 feet x 10 feet 100 square feet or 1 roofing square 5 feet x 20 feet 100 square feet or 1 roofing square.
So most popular shingles are sold such that three bundles are needed to cover one square of roof area.
Twenty seven strips equal a bundle generally speaking and roughly three to four compose a square.
But be careful not all shingle brands are packaged three bundles to a square.
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.
This would be 87.
Normal architectural shingles are approximately 3 bundles per square.
Of your roof area which is close to the sheet coverage area of 32 sq.
Four bundles to a square.