Home Depot Roofing Shingles : PNW Roofing & Remodeling

Interstate Roofing: Portland Residential
Thus, to cover roof of a 1500 square foot house, you would need 57 bundles of shingles. Thus, it will take 57 bundles of 3-tab standard size shingles (12″×36″) to cover roof of 1500 square feet house.
 
The number of bundles or squares you need will depend on the surface area of your roof, and its pitch or slope. For example, a 2,000 square foot roof will require 20 squares or 60 bundles.
 
A 30-year shingle is covered by the manufacturer for that time span, no matter the defect or issue that arises. A 50-year shingle, however, utilizes tougher materials during the manufacturing process. This upgrade is immediately noticeable.
 
For a 12×12 shed roof, you will need approximately 3 squares or 9 bundles or 261 pieces of three tab strip standard-sized shingles (12 inch by 36 inch) when overhangs is 1 feet and roof slope is 6/12.
Lifetime dimensional shingles are dimensional shingles with the minimum warranty of 50 years. Despite the durability of the dimensional shingles, they are paired with the warranty encompassing the length of the lifespan of the house itself.
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Thus, for a 8×12 shed roof, on average, you will need 6 bundles of three tab strip standard-sized shingles (12 inch by 36 inch) when overhangs is 1 feet and roof slope is 6/12.
 
30 – year shingles also known as laminated, dimensional or architectural shingles typically do not last 30 years. 20, 40, or 50 – year shingle will not last their designated years either. It is a common misconception and a point of confusion for many homeowners.