Milgard Retrofit Windows: What to Look for When Getting Installation Quotes
How to Evaluate Milgard Retrofit Window Installation Quotes Like a Pro
When shopping for Milgard replacement windows, one of the most common—and important—questions is: How do I choose the right installer? The truth is, even the best window won't perform properly if it's installed incorrectly. That's why choosing the right installation contractor is just as important as selecting the right product.
Make Sure They're AAMA Installation Masters Certified
The first thing to check is whether the installer is an AAMA Installation Masters Certified Installer. This certification carries real weight in the industry. Milgard—and most major manufacturers—don't publish detailed installation guides for every possible retrofit situation. Instead, they rely on AAMA (now known as FGIA - Fenestration and Glazing Industry Alliance) standards as the benchmark for proper installation practices.
To become certified, installers must complete a comprehensive training course, usually over two days, led by accredited instructors. The program covers everything from installation techniques and water management to safety and code compliance. At the end, participants take a rigorous written exam—and not everyone passes. Certification isn't handed out lightly, which is why it's a strong indicator that your installer knows what they're doing.
In fact, if you want the best chance at having the correct Milgard frame type used for your home's specific conditions, start with an AAMA-certified installer. They're trained to evaluate your existing openings and recommend the proper installation method—whether that's a flush fin (retrofit), block frame, or nail fin setup.
Beware of the Lowest Bid
While it can be tempting to go with the lowest quote, that strategy often backfires. In my 30 years of experience, I've seen time and time again that the cheapest bidder is usually not in business three years later. And if something goes wrong with the install, you'll be left footing the bill.
The Most Expensive Window Is the One You Replace Twice
It's a common trap—save money now and deal with the consequences later. But when it comes to windows, cheap often means short-lived. If you choose a low-end product or poor installation, you may find yourself replacing those windows in less than ten years. And by then, you've paid twice.
That's why the most expensive window is often the cheapest one—because it fails early and forces a second round of replacement.
Contrast that with quality. For example, the Milgard windows in my parents' home have been in place for over 30 years. They're still performing well, still look good, and have never needed replacing. That's the kind of longevity you get when you install a well-built product with a trusted installer. Don't cut corners up front only to pay for it later—install a quality Milgard window the first time.
Don't Sign on the Spot
Avoid signing a contract during the first meeting. High-pressure sales tactics are still out there, especially with in-home sales reps. They'll often start with a high price and gradually "discount" it until you agree—making you think you're getting a deal. But what you're really seeing is a sales script, not a transparent quote.
A professional installer should provide a detailed written estimate, give you space to review it, and welcome follow-up questions. If someone is pushing you to sign right away, that's a red flag.
If You're in California - Check the License
If you're located in California, always verify that the installer is properly licensed with the Contractors State License Board (CSLB). You can visit https://cslb.ca.gov to look up their license number and check if they carry Workers' Compensation Insurance—which protects you in case a worker is injured on your property.
Final Thoughts
Window replacement is an investment in your home's comfort, efficiency, and value. Don't rush it. Take the time to vet your installer the same way you'd research the windows themselves. Look for certifications, track records, and professionalism—not just price. The right installer will make your Milgard windows perform as designed, and stand behind their work for years to come.
About the Arthor:
Douglas Lopez
Over 30 years' experience installing Milgard Windows & Doors
