Yes, there are different grades of asphalt roofing shingles. The three most common grades are economy, mid-grade and premium. Each grade offers a different level of protection for your home. Economy shingles are the thinnest and least expensive, but also offer the least amount of protection. Mid-grade shingles are thicker and more durable than economy grade, and premium shingles offer the best protection of all. It's important to note that not all roofs are suited for each grade of asphalt roofing shingle. Be sure to consult with a roofing contractor to determine which type of shingle is right for your home.