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The warranty for algae-resistant shingles varies by manufacturer, but the industry standard is 25 years for overall shingle durability and lifespan and between 10 and 15 years for algae resistance. Some products come with longer warranties for discoloration of up to 30 years. Check warranty coverage for the shingle and algae protection before deciding on a roofing product.

A roof's ability to handle snow depends on its strength and the snow's weight, as wet snow is much heavier than dry, fluffy snow. While designs in snowy regions often allow for 35 to 50 pounds per square foot, a general guideline is that a typical roof can withstand about four feet of fresh snow, two feet of packed snow, or just one inch of ice. Factors like the roof's age, slope, and support structure also affect its capacity; newer, sloped roofs generally hold more weight than older, flat ones. Ice and ice dams add significant, dangerous weight. Because capacity varies, it is best to contact a professional roofing contractor or the original builder to determine the maximum snow load for your specific home.

Yes, all roofs can benefit from flashing. Roof flashing can protect a property from water damage, roof leaks, mold, and other serious issues. It’s vital if you’d like to extend the lifespan of your roof and avoid costly repairs down the road.

Most traditional lenders will not loan against a house with a leaking roof, and some lenders won’t lend against a home with a roof near the end of its lifespan. If the roof on your new home is in poor condition, you may need to have the seller offer a credit for a roof replacement after closing, or you can opt for a renovation loan—also called a 203k loan—to bundle the house and the roof replacement into one loan.