Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Why Miami Beach Homeowners Choose Mr-Glass Windows & Doors
We provide independent Mr-Glass windows and doors repair, service, and full-frame replacement across Miami Beach, from South Beach condos to the single-family streets of Normandy Isles. We’re not an authorized Mr-Glass dealer, and we won’t pretend to be one. What we are is a local crew that has torn down and rebuilt hundreds of Mr-Glass units in this salt-air environment, and we know exactly where the brand’s hardware fails first. If your Mr-Glass window is binding, leaking, or dropping, call (386) 406-9359 and we’ll tell you straight whether it’s a repair or a replacement. Most jobs get a written quote on the first visit, and the work carries our Done Right Promise.
Why Trust TruePane Windows & Doors for Your Mr-Glass Windows & Doors?
Mr-Glass windows and doors are built in Florida for Florida, which means they’re designed with hurricane code in mind. But design intent and a decade of beach exposure are two different things. Our technicians know the Mr-Glass product lines not from a brochure, but from pulling apart failed units and rebuilding them to outlast the original hardware. That’s the difference between a shop that replaces a part and a shop that understands why the part failed. Dale Kessler grew up in the Normandy Isles section of Miami Beach, where the salt air off the Intracoastal teaches you exactly what a poorly sealed window frame looks like after two hurricane seasons. He spent years setting and weatherproofing windows across this city before founding TruePane Windows & Doors, and that hands-on history is now baked into how our crew approaches every Mr-Glass job. If it’s not right in the opening, it’s not right. We measure twice because we know what a callback costs you in time and trust. We register both manufacturer warranty layers in writing before the truck leaves the driveway, and our workmanship carries the Done Right Promise. No paperwork fights, no arguing. That’s the Keystone Standard, and it applies to every Mr-Glass unit we touch.
Common Mr-Glass Windows & Doors Problems We Fix in Miami Beach
- 7800 Series horizontal rollers seizing from salt and sand. Miami Beach sits on a barrier island. Sand gets into every track, and salt spray accelerates corrosion on the stock roller assemblies. The original rollers on the 7800 Series are not marine-grade, and after a few seasons they bind up. The panel then gets forced, the rollers flatten, and the sash jumps track. We replace them with stainless or corrosion-resistant aftermarket rollers and realign the interlock.
- 7900 Series single hung balancers snapping. The balancer assemblies on the 7900 use a spiral rod and spring tension. In Miami Beach’s humid, salty air, the springs fatigue and snap. When that happens, the sash drops the moment you let go of it. It’s not a safety hazard if you catch it, but it will damage the jamb liner if you keep fighting it. We stock replacement balancers for the 7900 Series and install them without disturbing the surrounding frame.
- Weep-hole clogs causing water to pool in tracks. Blowing sand and sea spray love to plug up weep holes on Mr-Glass units, especially sliding doors on ocean-facing elevations. When water can’t drain, it sits in the track, works into the frame corners, and rots them from the inside out. By the time you see staining on the interior wall, the bottom frame rail is usually compromised. We clear the weep system, check the frame for rot, and reseal the corners.
- 7300 Series casement crank gearboxes stripping out. The Mr-Glass 7300 casement uses a steel-on-zinc gear mechanism in the crank operator. Zinc corrodes fast in beach air, and once the teeth strip, the crank just spins. The window itself is often fine. The operator is a bolt-on component, not a reason to replace the whole unit. We swap the gearbox, lubricate the hinge tracks, and the window opens like it should.
- Shrunken or collapsed weatherstripping on 7900 and 7800 units. Mr-Glass uses vinyl bulb weatherstripping in their standard fleece-lined tracks. Sun and salt degrade vinyl faster than most manufacturers admit. When the bulb collapses, you get air leaks, water intrusion, and a rattling sash. We replace the weatherstripping with marine-grade material that holds up longer in Miami Beach than the original.
Mr-Glass Parts & Our Repair-vs-Replace Approach
We use genuine Mr-Glass parts whenever the unit is still under warranty or when the structural integrity of the frame depends on the exact factory component. That’s the right call on newer units. But Mr-Glass has retired hardware on older models, and tracking down discontinued OEM parts can leave you waiting for months. In those cases, we stock corrosion-resistant aftermarket replacements that are spec-matched for the original. We’ll show you both options on paper with line-item pricing, and we’ll tell you honestly when a full-frame replacement beats a rebuild. A 20-year-old Mr-Glass 9500 impact sliding door with corroded bottom rails and a compromised frame is not worth rebuilding. A 7900 single hung with a bad balancer and a sound frame is a $200 repair, not a $1,200 replacement. Call (386) 406-9359 for an exact quote. Estimates are free, and they come in writing.
Our Mr-Glass Service Process - Step by Step
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Diagnosis on site. We inspect the unit, identify the specific Mr-Glass component failure, and check the surrounding frame, sealant, and track condition. On a 1960s mid-century condo just off Collins Avenue, our tech pulled a seized Mr-Glass 7800 horizontal roller where the bottom track had corroded into a jagged lip. We ground the track smooth, installed stainless rollers and a new interlock, and the panel glided as smoothly as the day it was hung without disturbing the original terrazzo sill. That’s the kind of fix you only get by reading the opening correctly the first time.
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Repair or install with the right parts. Whether we’re replacing a balancer, rebuilding a roller assembly, or pulling the entire frame for a full replacement, we use the correct fasteners, sealants, and shims for Miami Beach conditions. Stainless hardware, marine-grade sealant, and backer rod in every opening.
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Operational test and inspection. We cycle the window or door through its full range of motion, check the interlock engagement, verify the weep system drains, and confirm the unit seats square in the opening. If it’s an impact unit, we verify the glazing is properly set and the frame is anchored per Miami-Dade code.
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Warranty registration and paperwork. Both manufacturer warranty layers get registered in writing before we leave. Our Done Right Promise covers workmanship. You get copies of everything. If something’s not right, we come back and make it right. No arguing.
Mr-Glass Products We Service & Install in Miami Beach
We service the full Mr-Glass residential line, including the 7900 Series Single Hung, the 7800 Series Horizontal Roller, the 7300 Series Casement, and the 9500 Series Impact Sliding Door. Our work spans horizontal roller window rebuilds, hurricane impact unit replacement, and full-frame tear-outs where the original installation never met Miami-Dade code. We stock local inventory of common Mr-Glass balancers, rollers, operators, and weatherstripping so we can finish most repairs in a single visit. For full-frame replacements, we quote the opening, not a guess, and we handle the permitting and the inspection.
We Also Service These Brands
Mr-Glass is not the only manufacturer we work with. TruePane Windows & Doors is an authorized installer for more than a dozen lines, and we regularly service PGT, CGI, CWS, and ES Windows units across Miami Beach. Our multi-brand experience means we’ll never push you into a replacement when a cross-brand hardware solution is the better call. If you have a mixed house or condo, we can service every window and door in one trip.
FAQs - Mr-Glass Windows & Doors Service in Miami Beach
It jumps because the bottom roller assemblies have seized or worn flat from sand and salt corrosion, and the panel is being forced against the interlock. Once a roller seizes, the panel drags, the operator torques on the sash, and it eventually lifts off the rail. The fix is to clean or replace the rollers and check the interlock and track alignment. Call (386) 406-9359 for an exact quote. Estimates are free.
Yes, and it’s a common repair for us in Miami Beach. The balancer spring has snapped, and the sash has lost its counterweight. We replace the balancer with a corrosion-resistant assembly matched to your sash weight, and the window holds its position again. The repair is done from inside the room in most cases. Call (386) 406-9359 for a quote.
No. The crank operator gearbox is the problem, not the sash. The 7300 Series casement uses a steel-on-zinc gear that strips when corrosion takes hold. The window itself is usually still sound. We replace the operator, clean and lubricate the hinge tracks, and it opens and closes the way it’s supposed to. If the hinge hardware is also seized, we’ll show you that on site before we quote anything.
If the rollers are shot, the interlock is worn, and the weatherstripping is collapsed, that’s a rebuild. If the bottom frame rail is soft from pooled water, the glass has lost its seal, or the frame is out of square from a past storm, you’re looking at full-frame replacement. We’ll assess the frame with a moisture probe and a square before recommending anything. Call (386) 406-9359 for a full inspection with written findings.
Keep the weep holes clear. Blowing sand and sea spray clog them faster than most people realize, and once they’re blocked, water stays in the track and works into the frame. We clear the weep system, check the drainage slope, and can install stainless weeps if the original plastic ones have degraded. If water is pooling now, don’t wait too long. Call (386) 406-9359 and we’ll take a look.
Repairs on Mr-Glass units typically run from $180 to $450 depending on the component and the size of the unit. A single hung balancer replacement in Miami Beach is usually under $300. A full-frame impact replacement runs significantly more, starting around $2,800 for a standard opening, and the price depends on the product series, size, and code requirements. We give line-item written quotes, not verbal estimates. Call (386) 406-9359 for an exact price on your specific windows.
Book Your Mr-Glass Service in Miami Beach, FL
If your Mr-Glass windows or doors are binding, leaking, or losing their seal, don’t wait until the next storm season. Call TruePane Windows & Doors at (386) 406-9359 for a free estimate. A live person answers the phone, twenty-four hours a day, seven days a week. We’ll schedule a time that works, show up when we say, and give you a written quote before any work begins.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Miami Beach since 2008.
Six Reasons Homeowners Choose TruePane 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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