Top-quality asphalt shingles combine a fiberglass mat, modified asphalt, and tiny weather-resistant granules in various colors. They laminate multiple layers to add durability and texture for visual appeal. Weighing as much as 400 pounds per 100 square feet, the best shingles have received Class A Fire Ratings and even achieved a Class IV hail rating (the highest possible). Lifespan: 30 to 50 years (by warranty).
Natural stone shingles are beautiful and have been a favorite for sloped commercial roofing on churches and historic buildings. Neither fire nor hail nor wind will disturb a strong slate roof. Occasionally, ice or weather damage can dislodge one or two tiles. Slate has been used for at least 500 years. In the Northeast it’s not uncommon to see nineteenth-century homes proudly displaying original state roofs.
Once the domain of commercial roofing, steel and aluminum roofs are gaining ground in residential designs. Never “shingle-style” metal products now offer texture and shadowing similar to traditional roof shingles. Metal roofs are fireproof, bug-proof, and can withstand hail and hurricane conditions. Modern aluminum shingles are light-weight and could last for centuries.