I remember going up onto a roof once, once!
I would frequent my roof more often if it didn’t require the use of an extension ladder. Understanding that every step upwards on an extension ladder exponentially increases the odds of the homeowner dying, I naturally avoid this otherwise key component to general roof repair. My only regret to avoiding extension ladders is that I’m now forfeiting the feeling of calm exhilaration one senses when your leading foot touches down on the grass after taking that last step down.
So, with my generosity in home repair responsibilities being sincerely unbounded, I wholeheartedly recommend that these moments of death defying exhilaration be unselfishly shared with licensed professionals. In other words, if you need your roof repaired, call a licensed roofer.
When should you be inviting a member of this fine class of tradespersons over to your home? Hopefully, it’ll be well before you experience a leak. That’s like waiting for a blowout in order to justify replacing your balding car tires.
Generally, asphalt roofing shingles last about 15-20 years. Today’s asphalt shingles have a fiberglass base, and are often referred to as “fiberglass shingles”, or simply “glass” shingles. Regardless, these fiberglass based shingles have the same ceramic coated rock surface, embedded into asphalt, as their organic (paper based) predecessors. So, even though the warranty on a fiberglass shingle may be 40 years, or a lifetime (considered 50 years), if you’ve gotten 20 years out of your shingles, without a hitch, they’ve served you well.
Why can’t a 40 or 50 year warrantied roofing product actually last 40 or 50 years? They can, of course, under the right conditions, such as the middle US states, where temperatures are consistently and moderately mild, and in the arctic, where things are consistently and moderately cold. In our part of the world, where weather conditions are about as consistent as Carey Price’s goaltending, there’s little hope for any product lasting more than 20 years outdoors, let alone a roof. Other than age, look for shingles tabs that have broken off, or curled up in a very obvious manner. Fiberglass shingles don’t curl so much, due to their more ridged backing. So, if you’re experiencing shingle curl, your shingles are most likely organic, and could be getting close to their expiry date.
Shingle curl, often referred to as ‘winter curl’ was relatively common in an organic shingle. However, the summer season would see this tab curl mostly flatten out. If the tabs aren’t going back, they’ve most likely dried to the point of no return. As a test, you could have a roofer attempt to push a curled shingle tab downwards. If the tab refuses to go down, or because of its dried leaf consistency, would likely crumble, then there’s no saving this roof. Be sure to wait until the outside temperatures are above 10 degrees Celsius before attempting this procedure, otherwise you risk breaking what was a healthy shingle tab.
If the tabs can be pushed down into position without effort, then consider putting a loonie sized dab of plastic cement under the lifted tabs. This will help settle the tab, prevent future wind blow off, and maybe secure you a few more years of roof life.
Are discolored asphalt shingles a problem? Essentially, no. Discoloration of asphalt shingles is normally due to moss and algae growth. Moss and algae growth on asphalt shingles, although unattractive, isn’t a detriment to a roof’s long term sustainability, unless of course things get to the extreme, whereby your home looks like it’s going to be swallowed up by some moss-like creature. If moss and algae are an issue, have your roofer install a strip of zinc metal, available in a 2-1/2 inch x 50 ft. roll, just under the tabs of the capping shingles along the peak of the roof. When it rains, zinc ions will trickle down over the shingles, and kill off the moss and algae.
Next week, more on roofing.