A dimensional shingle is a solid slab of asphalt shingle with additional pieces added to create dimension, and the shingled look we often associate with roofs. Dimensional shingles have a higher wind guarantee and a longer warranty than the traditional three-tab shingle. As opposed to the solid slab of dimensional shingles, three-tab shingles are cut every twelve inches to create a shingled look. This makes three-tab shingles more susceptible to wind and water damage. The thinner slab of three table shingles also makes them lighter, another contributor to their low wind resistance.
In the end, dimensional shingles are the better choice for your home. They have a higher wind rating and a longer warranty. They also give your roof a more appealing look and create curb appeal for your home!