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Mr-Glass Construction in Montclair, CA | Stallion Contractors
We provide independent Mr-Glass service in Ontario and across Montclair, from shower enclosure retrofits to sliding glass door repairs, with one local difference: we measure every job against the out-of-square rough openings common in 1950s-60s tract homes here. Most Montclair bathrooms were framed on shallow slab foundations, and those walls have settled. That means stock Mr-Glass kits rarely drop in clean, and we plan for it from the first visit. Call (855) 600-3192 to schedule a free estimate, and read on to see how we approach Mr-Glass work in Montclair differently.

Why Montclair Residents Choose Us for Mr-Glass Service
Ruben Montoya grew up in Colton, not far from Pepper Avenue, where half the houses were built by tradesmen who understood Inland Empire soil and sun. He picked up his foundation in construction at San Bernardino Valley College, and he’s spent more than two decades since learning what happens to glass, aluminum, and vinyl when the Santa Anas blow dry air across a stucco tract home. That background is why our crew doesn’t just swap glass. We check the framing, the track, the sweep, and the rough opening before we ever order a panel.
We’re Mr-Glass sales & service specialists in the sense that we know the product lines, the failure points, and the parts supply chain. But we’re an independent contractor, not an authorized dealer. That’s an advantage for Montclair homeowners: we recommend what the opening actually needs, not what a brand program dictates. We carry OEM Mr-Glass rollers, sweeps, and seals when the frame profile is still in production, and we stock quality aftermarket stainless rollers and magnetic sweeps when OEM parts are discontinued. On a 1960s single-story stucco home in Montclair’s 91763, we pulled a failing Mr-Glass sliding bypass tub enclosure with flat-spotted nylon rollers and a pitted aluminum track, re-squared the studs that had settled with the slab, and installed a frameless glass enclosure cut to the actual rough opening. Water stopped tracking onto the slab floor that week.
Styles & brands we work with







Common Mr-Glass Construction Problems We Solve in Montclair
- Hard-water scale and mineral etching on shower glass. Montclair’s water carries dissolved minerals, and intense summer sun through small bathroom windows bakes those deposits onto panels until the glass looks frosted and feels rough. We remove what we can and replace etched panels when the etching has gone too deep to restore safely.
- Roller and track failure on sliding bypass doors. We see nylon rollers that have flat-spotted and aluminum tracks pitted from years of Inland Valley heat cycling. Doors jump, drag, or fall off the track. We re-roller with stainless aftermarket rollers when the originals are gone, and we inspect the track profile before anything gets ordered.
- Seal and sweep degradation from dry heat and Santa Ana wind. Montclair’s hot, dry air cracks vinyl sweeps and magnetic strips much faster than coastal climates. When the seal goes, water escapes onto the original slab floor of these older homes, which is how you get grout rot and slab staining behind a tub or shower.
- Out-of-square openings in 1950s-60s stucco tract homes. Shallow slab foundations settle, and stock Mr-Glass enclosures bind or leave gaps. We shim, re-square, or custom-cut glass to the real opening, not the nominal size on the box.
- Corroded frames on framed enclosures. Aluminum frames on some older Mr-Glass lines corrode under alkaline stucco contact and hard-water exposure. When the frame has gone through, we tell you straight: replacement beats repair.
Mr-Glass Service in Montclair: What Local Conditions Mean for Your Equipment
Most Montclair homes went up in the 1950s and 60s on narrow 50-foot lots with shallow slab foundations and no attic space. That matters for Mr-Glass service in Upland and Montclair owners because the bathroom rough openings in these tract homes were never precise to begin with, and three to six decades of slab settling have made them worse. We measure every enclosure to the actual stud-to-stud and tile-to-tile dimensions, not to the manufacturer’s nominal size. When a homeowner tries to install a stock Mr-Glass kit into a settled opening, they get gaps at the wall jambs or a door that won’t track cleanly. On the narrow lots, bathrooms are tight, so we often convert a tub to a walk-in shower with a frameless glass enclosure to gain visual space without moving a wall. Ruben puts it plainly: “Good work doesn’t need a sales pitch – it needs the right materials and someone who knows what they’re doing.”
Mr-Glass Models & Products We Service in Montclair
We service the Mr-Glass prefabricated framed shower door and enclosure kits you find at home centers, including semi-frameless and fully framed lines. We also work on Mr-Glass sliding tub/shower bypass door systems, framed sliding glass window and door units, and Mr-Glass mirror and glass panel products sold as stock retrofit sizes. Our parts approach is simple: OEM when the frame profile is still in production, quality aftermarket when OEM parts are discontinued. We keep common stainless rollers and magnetic sweeps stocked for fast turnarounds across Montclair, so a re-roller and re-seal doesn’t turn into a multi-week wait. For framed sliding glass door units that stick or bind in Montclair’s dry climate, we clean and adjust tracks, replace worn rollers, and realign the door to the original frame.
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AfterMr-Glass Service Pricing in Montclair
What you’ll pay depends on whether we’re repairing an existing Mr-Glass unit or replacing it entirely. A re-roller and re-seal on a shower bypass door runs far less than a full enclosure replacement, but if the glass is etched through or the frame is corroded, a new enclosure is the honest call. Here’s what Mr-Glass service and related bathroom work cost in Montclair:
| Service | Price Range |
|---|---|
| Walk-In Shower Installation | $4,500 – $12,000 |
| Shower Replacement | $3,000 – $8,500 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Small Bathroom Remodel | $5,000 – $12,000 |
Every estimate starts with a walkthrough of the actual opening, the framing, and the slab. No numbers pulled from a brochure. Call (855) 600-3192 and we’ll give you a written line-item quote before any work begins.
Serving Montclair, CA — Our Local Coverage Area
We’re based in the Montclair area and provide Mr-Glass in Claremont and nearby communities we know 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, when the frame profile is still sound, we replace flat-spotted rollers, cracked sweeps, and etched glass panels as individual repairs. If the frame itself has corroded through or the glass is deeply etched across most of the panel, replacement costs less than repairing in pieces. Call (855) 600-3192 and we’ll tell you which route is honest for your enclosure.
Probably not without work. Most Montclair tract home rough openings have settled out of square over the decades, and stock Mr-Glass kits bind or leave gaps. We shim and re-square the framing first, then cut the glass to the actual opening dimensions. That’s standard practice on our Montclair jobs.
Yes. The dry heat cracks vinyl sweeps and magnetic strips, and the minerals in the local water etch glass faster when sun hits it through small bathroom windows. We spec UV-tolerant sweeps and stainless rollers for Montclair installs because we’ve seen what a few Santa Ana cycles do to stock parts. Call (855) 600-3192 for a free assessment.
We do. Narrow 50-foot lots mean small bathrooms, and a tub-to-shower conversion with a frameless glass enclosure opens up floor space without moving a wall. We handle the demo, the slab inspection, the waterproofing, and the glass install under one contract. (855) 600-3192 gets you a line-item quote.
No, we’re an independent contractor serving Montclair. We’re not authorized, sponsored, or warranty-backed by Mr-Glass. That means we’re free to recommend what the opening actually needs, and we can use aftermarket parts when OEM stock has been discontinued, which keeps repair costs down. Call (855) 600-3192 to schedule a free estimate.
Service Areas Near Montclair
We serve Montclair and the surrounding Inland Valley communities, including Colton, where Ruben grew up, plus Bloomington, Loma Linda, and Redlands. If you’re nearby and wondering whether we cover your street, give us a call. We also handle Mr-Glass service in Calimesa and Mr-Glass service in Jurupa Valley for homeowners on the outer edges of the valley.
Book Your Mr-Glass Service in Montclair Today
We’re an independent Mr-Glass service team offering Mr-Glass repair in La Verne and Montclair, and we know these communities’ tract homes, narrow lots, and Inland Valley sun. Call (855) 600-3192 to schedule a free estimate, and we’ll walk you through the work with real numbers.
Written by Ruben Montoya, Owner at Stallion Contractors, serving Montclair service area and the Inland Valley.