Unlike Amazon Prime, Amazon Business will be free to verified business customers, offering features such as bulk pricing, free two-day shipping on orders worth more than $49, and access to products not available to typical retail consumers.
Roof shingles are sold by both the bundle and by the square. A square of shingles is the quantity needed to cover 100 sq. ft. of roof. Shingles are packaged in paper- or plastic-wrapped bundles designed to be light enough for a person to carry, so heavier shingles require more bundles per square.
this will help determine how the shingles will lay on the roof width most asphalt shingles are 3 feet 91 4 centimeters in length if your roof s width is not an even multiple of the shingle s length you will have a partial piece on one end of each row the bottom row of shingles must hang past the edge of the roof