Asphalt shingles are the most popular roofing material for homes today, accounting for nearly 70% of domestic roofing installations, according to Tom Bollnow, senior director of technical services at the National Roofing Contractors Association (NRCA). And for good reason—asphalt shingles are lightweight, durable, attractive, and priced well compared to competitive roofing materials. While most asphalt shingles are manufactured with the latest advancements in weather- and wind-resistance, fire safety, and long-lasting performance, even the best of them can develop problems over time. The good news is that an asphalt shingle roof is probably the easiest type to repair, since curled shingles can be flattened and re-secured, and old shingles can simply be replaced. Plus, asphalt shingles make the warning signs of a serious roofing problem readily perceptible.