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Mr-Glass Construction in Montclair, CA | Sycamore Contractors
Sycamore Contractors provides independent Mr-Glass in Claremont, Montclair, and surrounding areas for window, door, and shower enclosure service. We’re not a manufacturer-authorized dealer and we won’t pretend to be. What we are is a local construction crew that has spent years correcting Mr-Glass glazing failures inside Montclair’s aging 1950s through 1970s stucco tract homes, where original rough openings, galvanized flashing, and tight lot lines make every replacement a little different than it would be elsewhere. Call (877) 265-6284 for a free estimate.
Why Montclair Residents Choose Us for Mr-Glass Service
Most contractors can swap a window. Few understand why the window failed in the first place. On a 1958 stucco ranch off Holt Blvd, we replaced three fogged Mr-Glass repair in La Verne and nearby areas handles single-hung windows and sliding patio doors where aluminum frames corrode and stucco flashing fails. The homeowner assumed the glass was the problem. It was, but so was the flashing detail that had been leaking for years. We re-flashed the openings with self-adhered membrane, upgraded to tempered dual-pane units, and installed new stainless rollers and tracks on the slider. The street noise dropped noticeably and the doors finally latched square again.
That’s the difference. We look past the failed part and find what the Pomona Valley sun, Santa Ana wind-driven rain, and original 60-year-old construction did to it. Nate Calloway, who owns Sycamore Contractors, learned this craft the slow way, running crews across Southern California before most tract homes in Montclair were even half their current age. He’ll tell you straight what holds up and what won’t. We bring options; you make the call. For more on who we are, see our Mr-Glass sales & service overview.
Styles & brands we work with







Common Mr-Glass Construction Problems We Solve in Montclair
- Fogged dual-pane glass seals. The intense heat cycling of Montclair’s dry summers breaks the seal between panes on south- and west-facing Mr-Glass windows. Once that seal fails, condensation and mineral haze creep in. We replace the insulated glass unit rather than the whole frame when the frame is still square.
- Corroded or bent rollers and tracks on aluminum sliding doors. Wind-blown grit from Santa Ana events works its way into Mr-Glass sliding door tracks, grinding the original rollers until the door sticks or jumps the rail. We source OEM-equivalent rollers and realign tracks in existing frames when possible.
- Cracked or chipped glass in shower enclosures. Montclair’s hard water leaves mineral scale that traps heat against the glass surface of Mr-Glass semi-frameless enclosures. Add a slight flaw in the original tempering and thermal stress does the rest. We replace glass to current safety standards.
- Wood rot and flashing failure around window and door openings. These original stucco tract homes weren’t built with modern moisture management. After a winter rain or wind-driven storm, we see water staining around Mr-Glass window trim and door thresholds. We repair the framing and replace the flashing, not just the cosmetic surface.
- Warped or cracked Mr-Glass vinyl window sashes. Inland heat and decades of operation take a toll on builder-grade vinyl. We repair what’s serviceable and tell you honestly when replacement outlasts another patch job.
Mr-Glass Service in Montclair: What Local Conditions Mean for Your Equipment
Montclair is one of the densest, oldest-built-out small cities in the Pomona Valley. Almost no vacant lots remain. That means nearly every Mr-Glass window or shower enclosure job here is a replacement or remodel inside an existing 1950s to 1970s stucco tract home, not a fresh start. We routinely work through the ripple effects: non-standard rough openings that don’t match modern window specs, original galvanized flashing that has outlived its useful life, and City of Montclair permit review for work that sits close to lot lines. A contractor who only works new construction in master-planned communities never sees this. We do, on almost every job. It shapes how we order glass, how we frame openings, and how we sequence the permit with the construction calendar, especially when the Santa Ana winds are forecast. This is our every-day reality in Montclair. Learn more about the neighborhoods we cover on our Montclair service area page.
Mr-Glass Models & Products We Service in Montclair
We service the Mr-Glass lines found throughout Montclair’s housing stock: vinyl single-hung and sliding windows from the 1970s through 1990s tract builds, aluminum sliding glass doors with their original rollers and tracks, semi-frameless shower enclosures with framed pivots, and tempered glass patio door units with builder-grade weatherstripping. For parts, we source OEM-equivalent or high-quality aftermarket glass, rollers, and seals that meet or exceed the original Mr-Glass specifications. We don’t always stock every part in the truck, but we know which suppliers carry what we need for fast turnaround on Mr-Glass service in Upland and throughout the Pomona Valley. When a repair like new rollers and new weatherstripping will genuinely outlast the window, we say so. When full replacement is the smarter spend, we say that too.
See the difference
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After
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AfterMr-Glass Service Pricing in Montclair
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Shower Replacement | $3,000 – $8,500 |
| Bathroom Vanity Installation | $800 – $3,000 |
What drives the cost in Montclair is the condition of the original opening. A window replacement inside a square, dry opening is straightforward. A window replacement inside a rotted opening with failing flashing and a galvanized sill pan that has rusted through is a different scope. We give you a written, line-item estimate before any work starts, so you can see exactly what’s construction and what’s finish. Call (877) 265-6284 for an exact quote. The estimate is free.
Serving Montclair, CA — Our Local Coverage Area
We’re based in the Montclair area and provide Mr-Glass service in Ontario, knowing this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Mr-Glass Construction in Montclair
Yes. Window replacement in Montclair requires a permit through the city, especially for work on older tract homes where rough opening alterations and stucco repair are part of the job. Same-size insert replacements sometimes slide through with a simple notice, but we never assume. We check with the city before we quote. Call (877) 265-6284 and we’ll find out for your specific property.
Fogging between the panes means the dual-pane seal has failed. Montclair’s dry heat accelerates seal fatigue, especially on south- and west-facing glass that gets direct afternoon sun. Once the seal goes, moisture and mineral haze enter, and the only real fix is replacing the insulated glass unit. The frame may be fine; the sealed unit isn’t. We can tell you which one you need.
Yes, but it depends on the wall structure. Many 1950s bathrooms in Montclair have original plaster over wood lath or drywall that isn’t always perfectly plumb. Frameless glass leaves very little tolerance for out-of-square walls. We check the wall before we quote so you don’t end up with a door that won’t swing. Call (877) 265-6284 for an assessment.
Usually a repair works. Grit from Montclair’s Santa Ana wind events grinds the original rollers down until the door drags or sticks. New rollers, cleaned and realigned tracks, and fresh weatherstripping often bring the door back to square. If the frame is corroded or the glass is fogged too, replacement may be the better spend. We’ll show you both numbers and let you decide.
Yes, all under one contract. We cut the opening, replace the window, re-flash it, patch and match the stucco, and paint to blend. You’re not calling a separate stucco crew or a separate painter. One team, one responsible party. Call (877) 265-6284 to schedule a free estimate.
Service Areas Near Montclair
We regularly serve neighbors in Pomona, Claremont, Upland, Ontario, and Chino. This part of the Pomona Valley all shares the same 1950s to 1970s tract housing stock, dry inland heat, and tight lot patterns, which means the Mr-Glass failures we see in Montclair are the same ones we see across the surrounding cities. For crews working east, we also run Mr-Glass service in Midway City and Fullerton.
Book Your Mr-Glass Service in Montclair Today
If fogged glass, a sticking slider, or a cracked shower door is slowing you down, call Sycamore Contractors at (877) 265-6284. We’ll set a time to inspect the unit, give you a written estimate, and walk you through repair versus replacement. Do it right the first time, or you’ll do it twice in the July heat.
Written by Nate Calloway, Owner at Sycamore Contractors, serving Montclair and the Pomona Valley.