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Maintenance is also crucial for the longevity of tile roof shingles. While they are durable, regular inspections are necessary to identify and address any potential issues, such as cracked or broken tiles. Over time, the underlayment beneath the tiles may need to be replaced, which can add to maintenance costs. Homeowners should be prepared for some upkeep to ensure their tile roof remains in good condition for decades.

2. Wood Shingles These shingles, made from cedar, redwood, or pine, can last 20 to 25 years but require more maintenance, including regular sealing and treatment to prevent moss or algae growth.

Structural Integrity and Longevity

3. Removal of Old Roofing If you’re replacing an existing roof, it’s essential to factor in the cost of removing the old shingles. This can range from $50 to $100 per square, depending on the weight of the old shingles and the complexity of the removal process.

2. Prepare the Roof Deck

Before diving into repairs, it’s important to identify the cause of the leak. Common indicators include water stains on ceilings or walls, damp spots, or visible shingle damage. To locate the source of the leak, you may need to inspect your roof. Look for missing shingles, curled or buckled shingles, or areas where shingles have cracked. Additionally, check the flashing around chimneys and vents, as this is often a weak point where leaks can develop.

Ventilation is another critical aspect of a successful metal roof installation over asphalt shingles. Adequate ventilation prevents heat buildup and moisture accumulation in the roof cavity, which can prolong the life of both the new metal roof and the underlying shingles. Homeowners should ensure that their attic is properly ventilated, as this will save money in the long run by preventing damage and reducing the risk of mold growth.

4. Granule Loss Asphalt shingles are covered in granules that protect them from ultraviolet rays. If you notice granules in your gutters or around your downspouts, it could indicate that your shingles are nearing the end of their lifespan.