The answer to the difference between asphalt shingles is that they come in two main types: 3-tab and architectural (also called dimensional or laminated). 3-tab shingles are the traditional, flat design, while architectural shingles have a thicker, more textured appearance that can mimic the look of wood, slate, or other premium roofing materials.
The key differences are in their durability, appearance, and cost. Architectural shingles are generally more durable, lasting 30-50 years compared to 20-30 years for 3-tab. They also have a more premium look that can enhance a home's curb appeal. However, architectural shingles typically cost 20-30% more than 3-tab shingles.