1. How Old Is Your Roof, Actually?
Most experts agree that a typical roof will last between 20 and 25 years as long as there are no major storm damages. It also depends on whether the old roof was removed and you only have one layer of shingles, and if it is properly ventilated. If the roof was installed over another layer or several layers and it is older than 20 years, chances are you need a new roof.
2. Are Your Shingles Curling or Buckling?
Shingles that are curled or buckling are another sign that you may need a new roof. Look at the slopes of your home that get direct sunlight and if you notice the shingles are curling and losing granules, it could mean the shingles are past their life expectancy. There could also be a possibility that the roof is defective.
3. Are The Roof Valleys In Good Condition?
If your roof shingles are falling apart or missing in this area, it’s a definite sign you need a new roof. Valleys are one of the most important areas of your roof. Snow and rain flow through valleys and into gutters. If the valley is compromised, you could be susceptible to roof leaks.
4. Do You Have Correct Chimney Flashing?
This is another area to be concerned about. If your flashing consists of roof cement or tar, it may need to be replaced with a long-term, water-tight fitting, which would be a metal flashing system.
5. Is There Shingle Debris In Your Gutters?
Look in your gutters to see whether they are loaded up with shingle granules. Roofs tend to lose more granules toward the end of their life cycle. Inconsistent or darker color on some parts of the roof is another sign the granules have worn away.
6. Do You See Light?
You notice a spongy feel or trampoline bounce when walking on the roof, which means the underlying decking is weakened from moisture. Check your attic to see if there is any daylight coming through the roof boards. Also check for moisture in the insulation.