Roof replacement is a major investment, so timing and material choice are key. Look for curling shingles, leaks, or daylight in the attic, as these signal it's time. Asphalt shingles are common and cost-effective, but metal or tile can last decades longer. Always get multiple quotes and check contractor licenses and insurance. Don't forget ventilation and underlayment—skimping here can shorten your new roof's life. What Homeowners Should Know About Roof Replacement