Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Mr-Glass Construction in Montclair, CA | Toolbox Contractors
We provide independent Mr-Glass shower enclosure and glass unit installation, repair, and replacement across Montclair, CA. What sets our Mr-Glass work here apart is that nearly every job we do in Montclair is a retrofit into a 1950s – 1970s stucco tract bathroom, not a clean new-build opening. That means we’re templating around out-of-plumb walls, unblocked studs, and hard local water on almost every call. If you’re in Montclair and your Mr-Glass enclosure is binding, leaking, or pulling loose, call Toolbox Contractors at (855) 382-3257 for a free estimate.
Why Montclair Residents Choose Us for Mr-Glass Service
We’ve spent years installing and servicing Mr-Glass shower enclosures and glass units specifically in San Gabriel Valley stucco tract homes. Norm Castellano, our owner, grew up in the Muscoy area just northwest of San Bernardino and cut his teeth on mid-century construction through San Bernardino Valley College’s construction technology program. He’s spent the better part of two decades doing residential work across the Inland Empire, and he knows how a Mr-Glass panel actually fails in a 1960s Montclair bathroom rather than how it looks in a showroom. We’re an independent contractor, not affiliated with or authorized by Mr-Glass, which means we quote what your opening actually needs, not what a catalog assumes. For more on our experience with this brand, see our Mr-Glass sales & service page. Tell me what you’ve got and I’ll tell you what it actually needs.
Styles & brands we work with
Common Mr-Glass Construction Problems We Solve in Montclair
- Out-of-plumb wall framing racks the opening. Montclair’s 1950s – 1970s stucco homes settle, and slab movement on older narrow lots shifts wall studs over decades. A frameless hinged Mr-Glass panel binds at the strike edge, or hinge screws pull loose within a season. The glass itself is often fine; the wall behind it moved.
- Hard Montclair tap water etches clear glass at the soap line and door sweep. Inland San Gabriel Valley water leaves mineral deposits that cloud Mr-Glass panels cosmetically long before anything structural fails. The panels look terrible but remain physically sound, and the right fix is often a professional glass restoration treatment, not a replacement.
- Original tub-alcove surrounds were never blocked for glass. These tract homes had shower curtains when built. Hinge and panel mounts land on drywall or hollow tile instead of solid backing, so the whole assembly loosens over time. We re-block the hinge wall before installing or re-hanging any enclosure.
- Dry Santa Ana heat cycling throws doors out of alignment. Montclair’s hot inland summers and dry winds cause wood framing to expand and contract. Guides, sweeps, and rollers on Mr-Glass sliding and bypass doors wear unevenly, and doors start to drag or leak at the curb. We replace the worn hardware and re-set the track so the door moves cleanly again.
- Second baths added in garage-to-ADU conversions create new glass openings. Because Montclair is landlocked and fully built out, homeowners are adding ADU bathrooms to narrow lots. These new openings often share zero-lot-line setbacks and tight framing, which means we template and install after plan review clears the addition, not before.
Mr-Glass Service in Montclair: What Local Conditions Mean for Your Equipment
Montclair is fully built out. There are no vacant parcels left between Pomona, Claremont, and Chino, so nearly every glass job here is a retrofit into a mid-century stucco tract bathroom, often on a narrow lot where a garage-to-ADU conversion is adding a brand-new second bath alongside the original one. That’s a different kind of work than building fresh in Ontario or Chino Hills, where new construction sometimes leaves a clean framed opening. In Montclair, we’re always templating around what’s already there: stud walls that have moved, alcoves that were never squared, and plumbing that’s original galvanized steel. On a narrow-lot street near the Montclair Place side of town, we converted a 1960s tub alcove into a walk-in shower for a homeowner adding a garage ADU bath at the same time. The original surround came out to reveal unblocked, out-of-plumb studs behind the tile. We re-blocked the hinge wall and brought the curb level before templating, then set a Mr-Glass frameless enclosure with upgraded hinges so the door swings clean instead of dragging on the sweep. If you’re planning that kind of work in Montclair, we’d rather be in the room before the tile goes up, not after the glass arrives.
Mr-Glass Models & Products We Service in Montclair
We work on Mr-Glass frameless hinged shower enclosures in both 3/8" and 1/2" glass, sliding and bypass tub and shower doors, semi-frameless pivot shower doors, and custom mirror and glass partition units. For parts, we use Mr-Glass-compatible OEM hardware where it’s still available, and quality aftermarket hinges, rollers, sweeps, and seals where OEM has been discontinued. We’ll tell you honestly when a re-hinge and re-seal is the right call versus when the glass itself is chipped, has tempered-edge damage, or is oversized for a reworked opening and needs replacement. We stock common hardware locally so Montclair service calls don’t wait on freight. For broader context on how we service the surrounding region, see our Montclair service area page.
See the difference
Before
After
Before
After
Before
AfterMr-Glass Service Pricing in Montclair
Here’s what our Mr-Glass work typically costs in Montclair, based on current San Bernardino market rates:
| Service | Price Range |
|---|---|
| Frameless glass shower enclosure / 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 specifically is whether we’re opening a wall to re-block studs, whether the original tub alcove has properly sloped drainage, and whether the glass opening is square enough to template as-is or needs corrective framing first. Every estimate includes a written line-item quote before any work starts. Call (855) 382-3257 to schedule a free estimate, and we’ll tell you exactly what your opening needs and what it doesn’t.
Serving Montclair, CA — Our Local Coverage Area
We’re based in the Montclair area and know 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, but the alcove usually needs prep work first. Original tub-alcove surrounds in these tract homes were never blocked for glass, and framing has often shifted out of plumb. We re-block the hinge wall and check the tub deck for level before templating. Then the Mr-Glass panel fits cleanly and the door swings without binding. Call (855) 382-3257 and we’ll assess your alcove in person.
Cloudiness on otherwise clean Mr-Glass panels is almost always mineral etching from Montclair’s hard tap water. Calcium and magnesium in Inland San Gabriel Valley water bond to the glass surface at the soap line and door sweep, and over time the etching becomes permanent. Professional restoration can often clear light etching; deep etching means glass replacement. We’ll tell you which one you’re dealing with.
Rarely. If your Mr-Glass frameless door suddenly won’t close, the usual culprit in Montclair is a wall that has shifted, not the glass itself. Out-of-plumb studs, loose hinge screws, or a curb that’s fallen out of level will bind a door. We diagnose the opening first. If the glass is intact and the tempered edges are sound, we re-hinge and re-align instead of replacing. If the glass is chipped or cracked at a drilled hole, replacement is the only safe option.
After waterproofing and tile are set, but ideally with us involved before the tile goes up. In Montclair, where ADU conversions on narrow lots trigger extra plan review and shared-wall setbacks, the framing often ends up tighter than the plans showed — a challenge we also see with Mr-Glass service in Upland. If we’re in the room before tile, we can confirm blocking and opening dimensions. That saves you from ordering a Mr-Glass panel that doesn’t fit the as-built opening.
Yes. Montclair’s built-out reality means many of our Mr-Glass jobs happen while a garage-to-ADU conversion is underway on the same property. We template and service both bathrooms in the same visit when the timing lines up, which keeps a single point of accountability across both openings. Call (855) 382-3257 to coordinate.
Service Areas Near Montclair
Alongside Montclair, we provide Mr-Glass service in Good Hope, Chino, Pomona, Claremont, and south San Gabriel Valley neighborhoods within a short drive. In Good Hope and Chino, we see many of the same mid-century stucco tract home conditions as Montclair, often on even tighter lot lines.
Book Your Mr-Glass Service in Montclair Today
If your Mr-Glass enclosure is binding, leaking, or looks like it’s seen better days, call Toolbox Contractors at (855) 382-3257 for a free estimate. We’ll come out, assess the opening, and give you a straight answer on what needs fixing and what doesn’t.
Written by Norm Castellano, Owner at Toolbox Contractors, serving Montclair, La Verne, and the San Gabriel Valley.