What material is commonly used for roofing to prevent leaks?

Asphalt shingles are the most commonly used material for roofing to prevent leaks due to their effective waterproofing capabilities and widespread availability. They are designed to create a barrier against water infiltration, thanks in part to their composition, which includes a fiberglass mat layered with asphalt. This construction helps them shed water efficiently, reducing the risk of leaks during heavy rain or snowfall.

Additionally, asphalt shingles come in various styles and colors, making them versatile for different architectural aesthetics. They are also relatively easy and inexpensive to install, which contributes to their popularity among builders and homeowners alike. Their durability, when properly installed and maintained, can provide reliable protection against leaks for many years, often lasting 20 to 30 years depending on the quality of the shingles and local climate conditions.

While other options like metal sheets and slate tiles also serve as effective roofing materials, they may not be as commonly used or as cost-effective as asphalt shingles for most residential applications. Wood shingles, while traditional, are less favorable in terms of water resistance and can lead to issues with mold and decay if not properly maintained.