Time to Replace your Shingles

When to Think About Replacing Your Shingles

Pavel Gonchar Renoteck News, Roofing Resources

Indicators that you need to replace shingles on your roof range from the subtle to obvious. By keeping your roof in good repair, you will reduce the risk of interior damage to your home.

Once a leak appears on the inside, quite a bit of damage may have already been done. Possible damage includes rot to the joists, insulation and drywall damage and water damage to the roof itself.

Here are the things you need to be aware of and watch for:

Age of Shingles

The age of your asphalt shingles will give you an idea as to when you may need to replace it. A simple rule of thumb is that a 10-year roof does not normally last the full 10 years, a 25-year roof does not last 25 years and so on. If your neighbours in the subdivision are replacing their roofs it’s a pretty good indicator that you should also. Your final determining factor will be the condition of the shingles, which is covered below.

Curling Shingles

Whether the edges are curling upward, or the centre of the shingle is starting to rise (clawing), leaks are on the horizon. The shingles are drying, shrinking and becoming brittle. At this point they become susceptible to wind and ice damage.

Curling Ashpalt Shingles

Curling Ashpalt Shingles

Entire Asphalt Shingles Have Broken off

Entire Asphalt Shingles Have Broken off

 Entire Shingles are Missing

Replacing a shingle or 2 here or there is not an issue. The problem arises with the passage of time. Patch jobs will become more frequent. It will be difficult to get matching shingles and your roof will begin to look spotty. That may be time to bite the bullet and do the entire roof.

Cracked Shingles

Cracks in your shingles are generally caused by wind damage. If it is a scattered issue or contained to one area you could simply repair those areas. If you see evidence of cracking throughout the roof it is time to replace.

Cracked Asphalt Shingles

Cracked Asphalt Shingles

Bald Spots on Asphalt Shingles

Bald Spots on Asphalt Shingles

Bald Spots on your Shingles/Granules in the Gutter

It turns out that those shiny granules on the surface of the shingle keep the sun from baking your roof due to their reflective quality. Without the granules your shingles deteriorate rapidly.

Note: a brand new roof will initially shed loose, extra granules.

Lightbeams in your Attic

This is a HUGE RED FLAG! Direct exposure to the elements will cause damage to the interior of the house and to the roof structure itself.

Water Stains in the Attic

You need to determine if that is an old watermark or an indication of an active leak. Check the stain after a rainfall or two. If it changes colour or shape it is an active leak that you need to address quickly.

Moss on the Shingles

Deciding to act on this is driven by aesthetics. If you do not like seeing the moss, replace the shingles. Whatever you do, DO NOT power wash or scrap the moss off. By doing so you will have removed the protective granules and rendered the roof useless.

Buckling Asphalt Shingles

Buckling Asphalt Shingles

Sagging Roof Ridge

Sagging Roof Ridge

 Buckling Shingles

This produces a wavy pattern that usually runs vertically up the roof. Bucked shingles are easily torn off the roof by wind or ice. Age and a poorly installed underlayment can cause this problem.

Sagging Roof Line

Your roof line is not supposed to sag. If you see this developing, get a roofing contractor to look at it immediately. This indicates a structural problem that no amount of new shingles is going to fix. The source of the problem can range from roof decking to foundational problems.


Proper maintenance of your home includes taking care of your asphalt roof. Knowing the warning signs that your roof is beginning to fail will save you money in the long run. Alberta’s climate and geography is extreme. Renoteck Roofing is your expert to go to with roofing concerns.