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Mr-Glass Window Replacement: The Sarasota Owner’s Guide
We stock and install Mr-Glass-compatible window replacement parts across Sarasota, with most sash replacements, balance systems, and glass units running $180 to $475 installed depending on the series and size. We keep common Mr-Glass hardware on the truck, so a trip to your home often turns into a same-day fix. Most Sarasota owners discover a part has failed when a window suddenly won’t stay up, a crank spins without moving the sash, or condensation shows up between panes that used to be crystal clear.

Winslow Windows & Doors is an independent service provider and not affiliated with Mr-Glass. We’ve installed and serviced their windows in Sarasota homes for years, and we know the quirks of each series well enough to match parts on the first visit.
Which Mr-Glass Models This Applies To
Mr-Glass windows show up in a lot of Sarasota homes built or renovated between the mid-1990s and the early 2010s, and the parts we replace most often come from their single-hung, double-hung, and horizontal roller series. The biggest compatibility gotcha is the balance system: Mr-Glass used both coil balances and block-and-tackle balances across different production runs, and the two are not interchangeable. Guessing wrong means the sash rides unevenly or slams shut, so we match by pulling the sash and reading the stamp rather than eyeballing it.
For the glass itself, Mr-Glass units in Florida were often built as single-glazed or early double-glazed with aluminum spacers. In Sarasota’s salt air and humidity, those aluminum spacers corrode faster than newer warm-edge designs, which is why we see so many failed seals within 8 to 12 years on this brand. When we replace the glass, we upgrade the spacer to a warm-edge material with better humidity resistance, even though it’s technically an aftermarket improvement rather than a Mr-Glass OEM part. We’ll lay out the OEM-versus-aftermarket choice honestly: OEM is the safe match, but a quality aftermarket balance or weatherstrip often outlasts the original in Florida conditions, for less money.
Signs Your Mr-Glass Window Replacement Is Failing
- A sash that won’t stay up: The balance spring or coil has lost tension or snapped, which is the most common Mr-Glass failure we see in Sarasota. The window still locks and seals fine, but you’re propping it open with a stick, and that’s a safety problem waiting to happen.
- Fog or condensation between the panes: The seal on the insulated glass unit has failed, letting moisture in that you can’t wipe off either side. Once that happens, the only fix is replacement glass, and we measure and order it to the sheet for the exact Mr-Glass frame.
- A crank that turns but the sash barely moves: On casement and awning Mr-Glass units, the operator gear strips or the hinge arm binds. That’s usually a $40 to $90 part, not a whole-window job, but ignoring it means more wear on the frame over time.
- Drafts you can feel at the sill or meeting rail: The weatherstripping has flattened or rotted. In Sarasota’s humidity, original Mr-Glass weatherstrip breaks down faster than the window itself, and replacement gaskets are an inexpensive way to reclaim comfort and lower the AC bill.
- Visible corrosion on locks or latches: Salt air from the Gulf eats at exposed hardware, and Mr-Glass locks from older production runs use zinc components that pit badly within a decade near the water. A corroded lock is both a security issue and a warning sign for other hardware nearby.
Replacement Cost & What’s Included
Here’s what replacement parts for Mr-Glass windows typically cost in Sarasota, including our labor:
- Balance system replacement (per sash): $120 to $220
- Insulated glass unit replacement (per pane): $180 to $400 depending on size and glass package
- Weatherstrip or gasket replacement (per window): $65 to $140
- Lock, latch, or roller replacement (per window): $55 to $130
- Full sash replacement (when the frame is still solid): $275 to $475
What drives the range is mostly size and glass type. A small bathroom window with clear glass costs far less than a six-foot slider with low-E coatings. Every quote we give is a written, line-item price with parts and labor separated, and we honor that number once the job starts. No change orders, no surprise fees. Our workmanship warranty covers the install, and if a replacement part fails within the manufacturer’s coverage, we handle the warranty claim for you. Ed Winslow put his name on this business because he didn’t want anyone in Sarasota dealing with the kind of runaround the big national chains hand out.
DIY or Call Us?
Some Mr-Glass parts are safe for a careful homeowner. You can replace a lock, latch, or visible weatherstrip with basic hand tools, and we’ll even tell you which specific part number to order if you’d rather do it yourself. Where DIY goes wrong is with balances and sashes. Coil balances are under constant tension, and a block-and-tackle balance that lets go can drop a heavy sash on your hands. We’ve also seen Sarasota homeowners accidentally crack a vinyl frame by prying it the wrong way, turning a $150 balance job into a full window replacement. If the part involves springs, tension, or lifting a heavy sash out of the frame, call us at (941) 267-0779. The estimate’s free, and we’ll tell you honestly if it’s a job you can handle on your own.
FAQs
Most Mr-Glass windows are built to last 15 to 25 years overall, but in Sarasota’s salt air and humidity, you can expect balances to need replacement around year 8 to 12, and glass seals to fail between years 10 and 15 on original units. Call (941) 267-0779 for a free assessment of your specific windows, and we’ll tell you what’s worth fixing versus replacing.
Some parts, like locks and weatherstripping, can often be cleaned, adjusted, or repaired once the hardware is removed. But balances, glass units, and most rollers cannot be meaningfully repaired, and attempting to patch them usually costs more in labor than a clean replacement. We’ll give you an honest evaluation before any work begins.
Most single-part replacements, like a balance or lock, take 45 to 90 minutes once we’re at your home. A full insulated glass unit replacement takes one to two hours, depending on the frame condition and whether we need to order custom glass. For most jobs, we can fit you in within a week of your call to (941) 267-0779.
We stock the most common Mr-Glass balance systems, locks, rollers, and weatherstripping on our trucks, and we keep a local Sarasota inventory of the series-specific parts we use most. If you need a part we don’t have on hand, we’ll order it and schedule your install as soon as it arrives.
Written by Ed Winslow, Owner, Winslow Windows & Doors at Winslow Windows & Doors, serving Sarasota 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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