When is it Time to Replace My Roof?

The roof is arguably the most important part of your home. It protects you from the weather outside, and helps trap the heat to keep you warm in the winter. Therefore, proper maintenance of your roof is key to helping you ensure that you and your loved ones are adequately protected.

However, how would you know when it is time to replace your roof?

Inspect your Shingles


If you notice cracks in your roof’s shingles, it may be a sign to replace your roof.

These cracks typically come as a result of weather damage (rain, hail, snow, wind, etc.), extended exposure to sunlight, as well as over time with age. According to Canadian Home Trends, when shingles are cracked randomly throughout your roof, you may have up to five years before you need a complete roof replacement.


Look for cupping where the edges of the shingles bend upwards, and clawing where the edges remain flat while the middle comes up.
Curling can be due to deterioration over time and can lead to leaks. Depending on the extent of curling, you may have up to five years before you need to replace the roof.


The sight of mould is never a good sign in any instance – and on your roof is no exception.

Your roof, over time, will accumulate dirt that can cause fungi to appear. According to Smart Reno, asphalt roofs are most affected by mould. The fungi feed on the limestone in the roof, accelerating deterioration.
If you notice the shingles on the roof are tarnished with dark, vertical lines, mould has infected your roof.

Water stains on the celling

When water stains appear in the ceiling of your home, that is another indicator that it may be time to replace your roof.
These water stains may appear because of leaks in the roof, often caused by its deterioration. It is recommended to change your roof as soon as possible, as general repair will only prolong the inevitable.

Granules in the Eavestrough

Asphalt shingles, over many years, willshed their granules. These granules form as a result of natural wear and tear in the shingles. If you are cleaning out the eavestroughs and notice granules, it may be a sign to inspect your roof. According to MCM Home Exteriors, bald shingles compromise your roof’s protection, making the interior of your home vulnerable to leaks and other issues.

Bulging of the roof

When you notice parts of your celling are sagging, call a contractor immediately. Though there may be several reasons as to why your celling is sagging, ultimately, it is likely resulting from potentially serious structural damage. If you wait too long replace a roof, the cost of repair may be more expensive than a new roof.


The lifespan of your roof depends entirely on the materials of the shingles. Great Canadian Roofing and Exteriors notes that:

  • Asphalt shingles last anywhere from 15 to 30 years, depending on type (basic vs. architectural)
  • Metal shingles last between 30 and 45 years
  • Concrete tile lasts 35 to 50 years
  • Rubber shingles last 10-16 years
  • Cedar shingles and shakes last anywhere from 30 to 50 years (depending on thickness and quality)

If your roof is 10 years or older, be sure to monitor its status.

Canadian Home Trends recommends that the key to avoiding huge repair costs is to get routine maintenance at least once every six months. By continually monitoring the condition of your roof, you can help ensure that your home is protected from life’s uncertainties.

Have any tips you would like to share? Put your thought in the comments below.

Note, this article is for information purposes only