The word on the brochure is doing a lot of work
Every company selling windows in Calgary has a warranty, and on the front page they all look roughly the same. Big number. Confident word. Sometimes the word is lifetime.
The catch is that each company writes its own definition of that word, somewhere further into the document, and those definitions do not match each other. It might mean the lifetime of the person who bought it. It might mean the lifetime of the product, as judged later by the people who made it. It might mean exactly as long as you own that particular house, which for a lot of families is a decade or so.
Those are three very different promises wearing the same word.
So the first move is not to compare warranty lengths between quotes. It's to make each company show you where in their own paperwork that word is defined.
One warranty, four separate promises
Pull any window warranty apart and you find these pieces, each with its own clock:
| The piece | What it protects | What to ask |
|---|---|---|
| Frame and profile | The body of the window against warping, cracking and colour failure. | Usually the longest term, and the one the headline number comes from. Ask what counts as a defect versus normal weathering. |
| Sealed glass unit | The seal between the panes failing, which is the fog you cannot wipe. | The one you are most likely to actually use. Ask the term, and ask whether it is full or prorated. |
| Hardware | Hinges, handles, locking points — everything that moves every day. | Frequently the shortest term of the four. Ask whether replacement parts will still be made in ten years. |
| Labour and service | Somebody physically coming out, removing the failed part and fitting the new one. | The big one. Ask if it is included at all, for how long, and who pays the call-out if nothing is found wrong. |
Read that table again with one thing in mind. A company can give you a free part and still hand you a bill.
The labour gap, in plain numbers you can picture
Say a sealed glass unit fogs up years after the install. The manufacturer honours it and ships a new unit at no charge. Good.
Now somebody has to come to your house, take the sash out or take the glass out of the sash, dispose of the old unit, fit the new one, and re-seal it. If that window is on the second floor, that's access equipment too. None of that arrived in the box with the free glass.
If your labour coverage ended years before the glass coverage did, the free part is the smaller half of that day.
This is not a scandal, it's just how most of these documents are built. But it's the difference between a warranty that solves your problem and one that only pays for the easy part of it.
The question that does the most work
“If this exact window fails in year eight, walk me through what happens. Who comes out, what do I pay, and which line of the document says so?” Ask it out loud and watch how fast the answer arrives. People who know their own paperwork answer immediately.
Read the exclusions before the coverage
The coverage list is written by marketing. The exclusions list is written by the people who have to pay. That second list tells you what the document actually is.
Things that commonly sit in it: installation by anyone the manufacturer hasn't approved. Damage caused by the building moving or settling. Condensation and mould claims. Glass breakage. Aftermarket film stuck on the glass. Painting or modifying the frame. And wear on the moving parts and seals, described as normal.
That last one deserves a hard look, because the moving parts and the seals are precisely what you use every single day.
The exclusion most people never think about
A lot of warranties are void if the window wasn't fitted by an approved installer.
Which is reasonable in principle. The problem is that it quietly makes your product warranty depend on the installation. And installation is exactly the part homeowners are least equipped to judge while it's happening. A window can be a good window, sealed into the wall badly, and you'd get years before the evidence shows up as cold edges and damp sills.
So when somebody shows you a long warranty, the honest follow-up is about the crew, not the paper. Who is doing the actual fitting. Are they employees or subcontracted for the week. If they're the reason the warranty stands, they're worth asking about. I've written separately about how windows actually get set and sealed into a Calgary wall, because that seam decides more than the sticker does.
A warranty is only as good as whoever has to honour it
Here's the part that costs me something to write, because it applies to me as much as to anyone else.
A warranty is a promise from a company. If that company isn't there, the promise isn't either. Manufacturer coverage usually survives, because the factory is still standing and still wants to sell windows. Though you may end up dealing with them yourself, and proving what was installed in your wall years ago. The labour and installation half is different. That one lives or dies with the business that offered it, because there is nobody left to send out.
This is why a shorter warranty from somebody with a long track record and a real address can be worth more than a longer one from a business that appeared last spring. The number is easy to print. Being around in year twelve is the hard part.
And the same goes the other way. Ask me how long I've been doing this and who actually installs your windows. It's a fair question and you should ask it of everyone quoting you.
What to do before you sign anything
Get the full warranty document, not the summary page in the brochure. Ask for it as a file you can keep. If somebody won't send the whole thing before you sign, that is itself the answer.
Then work through these, in writing:
- What exactly does your definition of the headline term say, and where is it written?
- What is the term for each of the four pieces separately — frame, glass unit, hardware, labour?
- Is any part of it prorated, and from which year does the reduction start?
- Is it transferable if I sell, how many times, and what does the buyer have to do?
- Who pays the service call if you come out and find nothing wrong?
- Will replacement hardware for this specific system still be available in ten years?
- Which parts of this document are the manufacturer's promise and which are yours?
Seven questions. Take them to every quote you're holding and put the answers side by side. You will be very pleasantly surprised at how differently three companies answer the same seven things.
Why I'd rather you asked all of this
A warranty is a bet that something will fail. It's insurance, and insurance is what you buy when you expect trouble.
I would rather sell a window built so the moving parts stay adjustable, the seals stay serviceable, and the glass can be swapped without tearing the whole unit out of the wall. When every element is replaceable, a failure years down the line is a service call rather than a catastrophe, and the warranty argument matters far less than the design did.
That's the standard I'd hold anyone to, including me. Ask for the document. Ask the seven questions. And if the answers only ever arrive out loud and never on paper, you've learned something more useful than any number on the brochure.