When a roof leaks, the top question on homeowners’ minds is whether it can be repaired or it needs to be replaced. The answer to that question will depend on several factors, including the age of the roof and its overall condition.
A typical asphalt roof generally lasts 20 to 25 years. When a roof is replaced, sometimes the contractors remove the old roof and install a new one. In other cases, they add a new layer of shingles on top of the old ones. There is a limit on how much weight a roof can support. If there are multiple layers of shingles and the roof is over 20 years old, you may need to have it replaced.
If your shingles are curled or buckled, that could indicate that the roof needs to be replaced. Shingles that are curled or buckled are past their normal life expectancy.
The valleys are some of the most important parts of your roof. If the shingles are falling apart or missing in the valleys, the roof needs to be replaced. If the valleys are compromised, snow and rain that flow through them to the gutters could cause leaks.
Missing shingles are a clear sign that the roof needs to be replaced. Check your roof after a storm to see if any shingles were blown off.
Check the chimney flashing on your roof. If it consists of roof cement or tar, you might need to replace it with a metal flashing system to provide a long-term water-tight solution.
Roofing shingles tend to lose granules as they near the end of their lifespan. If your gutters are full of granules or there are inconsistent or darker colors on some parts of the roof, this indicates that the granules have worn away.
A spongy or bouncy feel when walking on the roof indicates that moisture has weakened the underlying decking. Check the attic for daylight coming through the roof boards and moisture in the insulation.