3-tab, The flat one $
Relative cost. $ of three.
A single layer of asphalt cut into three tabs so it reads as separate shingles from the street. Lightest, cheapest, and the shortest lived of the three. It sits at the bottom of the 15 to 30 year asphalt range rather than the top.
Right for. Rental property, a flip, or a roof you need sound and legal for the next decade rather than the next thirty years.

