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Mr-Glass Window Replacement: The Boca Raton Owner’s Guide
We stock and install Mr-Glass-compatible window replacement parts throughout Boca Raton, with most swaps running $240 to $640 installed depending on the specific component, glass package, and frame condition. The single pane of glass, the sash, the balance system, the weatherstripping, or the hardware is what wears first, and in most cases we can replace just the failed part without pulling the entire frame. Most Boca Raton homeowners discover the problem one of two ways: a crack that starts at the edge and creeps inward, or a window that suddenly won’t stay open, won’t lock, or whistles during an afternoon storm.
What surprises most people is that Mr-Glass windows are built well enough that the glass itself is rarely the first casualty. It’s the moving parts and the seals that give out first, especially in the salt air along the Intracoastal and the humidity that soaks communities like Royal Palm Yacht & Country Club and Woodfield Country Club from May through October. Ed Winslow has been working on Mr-Glass windows across Boca Raton for years, and he’ll tell you straight: most window failures he sees could have been caught early with a quick visual check.
Here’s what you need to know before you pay anyone a dollar:
- Mr-Glass windows use proprietary balance systems and weatherstripping channels that generic hardware-store parts don’t match correctly.
- An installed replacement typically costs less than half of what a full-frame window replacement runs in Boca Raton.
- We stock the most common Mr-Glass components on our trucks, and we’re honest about lead times when we don’t.
- Every replacement carries Ed’s 36500-Day Done Right Promise: if it’s not right, we come back and make it right.
- You’ll talk to a live person when you call (561) 816-5648, any hour, any day.
Which Mr-Glass Models This Applies To
Mr-Glass has manufactured several window lines over the years, and the part you need depends on which one is sitting in your opening. We most commonly service Mr-Glass single-hung and horizontal roller windows in Boca Raton homes, along with their impact-rated cousins that are common in neighborhoods east of I-95. The compatibility gotcha most people miss is this: Mr-Glass changed the balance spring style across model years, and an older Series 100 balance cartridge will not fit a newer Series 300 track, even though the windows look nearly identical from the inside.
How to identify your part before you call: open the window and look at the sticker on the top edge of the sash or inside the frame channel. It usually carries a model designation like MG-100, MG-300, or MG-500, sometimes with a date code. If the sticker is gone, measure the visible glass width and the overall sash thickness. We can usually identify the series from those two numbers alone. When we replace a Mr-Glass part, we prefer genuine Mr-Glass OEM components whenever they’re available, because the balance tension, the roller diameter, and the weatherstripping profile are engineered to work together. There are quality aftermarket equivalents for things like rollers and exterior glazing bead, and we’ll tell you honestly when one makes sense and when it doesn’t. We’re an independent service provider and not affiliated with Mr-Glass, which means we stock what actually works for Boca Raton’s climate, not what a corporate catalog tells us to push.
Signs Your Mr-Glass Window Replacement Is Failing
- The window drops or slams shut when you let go. That’s a failed balance system. In Mr-Glass single-hungs, the nylon spiral or block-and-tackle balance inside the jamb wears out from constant lifting, and once the tension goes, the sash becomes a guillotine. We replace the balance pair, not just the one that snapped.
- You hear a rattle or scrape when the window moves. The nylon rollers on Mr-Glass horizontal sliders degrade in Boca Raton’s heat and grit. Once the roller wheel flattens or comes off its axle, the sash drags on the track and carves grooves into the aluminum.
- Drafts that you can feel with the back of your hand, even when the window is closed. That’s compressed or brittle weatherstripping. The pile-style weatherstrip on Mr-Glass windows holds up reasonably well but dies faster in windows that face the afternoon western sun along Palmetto Park Road and Glades Road corridors.
- Condensation between the glass panes. That’s a failed insulated glass unit, not a cleaning problem. Mr-Glass IGUs fail when the perimeter seal lets go, and once moisture is inside, the only fix is replacement of the glass unit itself.
- The lock is stiff, won’t engage, or feels loose. Mr-Glass lock hardware is decent, but the striker alignment shifts as the weatherstripping wears and the sash settles. A lock that doesn’t seat fully is an invitation for forced entry, and in Boca Raton, we don’t leave it to chance.
Replacement Cost & What’s Included
Here’s what Mr-Glass window replacement parts typically run installed in Boca Raton. These are real numbers from our work, not internet guesses.
| Replacement Component | Installed Price Range | Typical Time on Site |
|---|---|---|
| Insulated glass unit (standard clear) | $180 - $340 | 45 - 90 minutes |
| Insulated glass unit (impact-rated or low-E) | $320 - $640 | 45 - 90 minutes |
| Balance system pair (single-hung) | $150 - $260 | 30 - 60 minutes |
| Roller replacement set (horizontal slider) | $120 - $210 | 30 - 45 minutes |
| Weatherstripping replacement | $90 - $190 | 30 - 60 minutes |
| Lock and keeper hardware | $80 - $160 | 20 - 30 minutes |
The range depends on the Mr-Glass series you have, whether the glass is standard or impact-rated, and what the frame condition looks like once we open it up. Every quote is a written line-item price, and the number we quote is the number you pay, no change orders hidden in fine print. Your replacement is covered by our workmanship warranty, and the glass itself carries the manufacturer’s seal-failure warranty. Seniors and veterans get 10% off permanently, and any repair over $200 knocks $40 off the invoice. It’s our standard, not a sale.
DIY or Call Us?
Here’s the honest split. Some maintenance on Mr-Glass windows is genuinely doable: cleaning the tracks, checking that the weep holes on the exterior bottom rail aren’t clogged with Boca Raton’s fine sand and dried leaves, and lubricating the lock with a silicone spray. Those things cost you nothing but ten minutes. But replacing a balance system is not a casual Saturday project. Those springs hold tension, and a loaded balance cartridge that releases wrong can take a chunk out of your hand. Same warning applies to anything involving the insulated glass unit: if you don’t seat it squarely and seal it properly, you’ll have fogged glass in six months and no warranty to lean on. My name’s on the truck, so the work has to be right. We’d rather spend 45 minutes doing it correctly than watch a homeowner fight a part that fights back. Call (561) 816-5648 and we’ll give you an honest quote over the phone before we ever roll a truck.
FAQs
In our experience, Mr-Glass insulated glass units in Boca Raton typically last 10 to 18 years before seal failure shows up, with east-facing and west-facing windows failing sooner due to constant sun load and salt exposure. Hard components like rollers and balances usually need replacement at the 8 to 12 year mark. To get an exact lifespan estimate for your model and home exposure, call (561) 816-5648 and Ed will give you a straight answer.
Yes, when the failure is in the moving parts: rollers, balances, locks, and weatherstripping can almost always be replaced individually rather than replacing the whole window or even the whole sash. If the insulated glass seal has failed, the glass unit itself must be replaced, but your frame stays in place. Call (561) 816-5648 and we’ll tell you which category you’re in over the phone.
Most single-part replacements on Mr-Glass windows take 30 to 90 minutes on site, and we’re usually in and out in one visit because we stock the common series components on our trucks. Custom glass orders may take 5 to 10 business days to fabricate before install day. Either way, we’ll give you a clear timeline up front.
We keep the most common Mr-Glass balance cartridges, rollers, weatherstripping profiles, and lock hardware on our trucks, along with compatible parts for PGT, CGI, and CWS windows, so most Boca Raton service calls are completed same visit. If your glass unit needs to be fabricated, we order it the same day and schedule your install as soon as it’s ready. Call (561) 816-5648 for a real availability answer, not a call-center script.
Written by Ed Winslow, Owner, Winslow Windows & Doors at Winslow Windows & Doors, serving Boca Raton and nearby areas.
Six Reasons Homeowners Choose Winslow Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.










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