Asphalt shingle roofing is the most common and, generally, the least expensive roofing material. Asphalt shingles are durable, reliable, and relatively inexpensive. They offer a wide variety of colors and styles, ease of installation, and they’re suitable for different climates and weather patterns. Asphalt shingle roofs should last about 20 years on average. There are two general types of asphalt shingle roofs: 3-tab shingle and architectural shingle. 3-tab shingle: composed of 1 flat layer and do not have a dimensional look. 3-tab shingles cost less than architectural but typically have a shorter life span. Architectural Shingle: shingle tabs with various sizes and shapes and are thicker than 3-tab shingles. Generally a bit more expensive but offered with a longer life-span.