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Mr-Glass Construction in Ontario, CA | Penhallow Remodeling Riverside
We’re an Ontario General Contractor serving Ontario, CA, and we service Mr-Glass shower enclosures, closet sliders, and custom glass without the manufacturer’s red tape. The difference here is simple: Ontario’s hard water, slab foundations, and older housing stock stress Mr-Glass units in ways most installers never see until the glass cracks or the rollers seize. Call (341) 895-1170 and we’ll give you a written price before we touch anything.
Why Ontario Residents Choose Us for Mr-Glass Service

We work on Mr-Glass products every week in Ontario, and we’ve learned which models hold up and which ones don’t. Frameless shower enclosures from the late 1990s, for example, often have hinge hardware that corrodes faster in Ontario’s mineral-heavy water than the same unit would in coastal air. We stock OEM Mr-Glass rollers, seals, and hinges when they’re still in production because aftermarket kits rarely match the track geometry. When OEM parts are discontinued, we machine or source exact-spec replacements rather than forcing a generic part in.
Trevor Nash leads our crew. He grew up in Los Angeles and trained at Los Angeles Trade-Technical College, where he learned that a good remodel starts with knowing exactly what you’re getting into before you swing a hammer. That mindset carries into every Mr-Glass job we take in Ontario – we inspect the framing, the track, and the glass before recommending a repair or a replacement.
We’re part of the Kingswell family of companies, operating to The Kingswell Way since 2004. Each location is independently owned and operated, and our Ontario customers get the same written guarantee on every job: if it fails inside a year, we come back and fix it at no charge. That’s in writing, not a verbal promise.
Styles & brands we work with






Common Mr-Glass Construction Problems We Solve in Ontario
- Track corrosion on shower door rollers. Ontario’s hard water leaves mineral deposits on Mr-Glass roller tracks, and over time those deposits grind the bearings down until the door jumps or jams. We replace the rollers and clean or rebuild the track so the door glides instead of fighting you every morning.
- Fogging between panes on insulated Mr-Glass units. Older mirrored wardrobe doors and closet sliders with dual-pane glass lose their seal after years in Ontario’s 100°F attic heat. Once the seal fails, moisture gets trapped between the panes and the fog never goes away on its own. We replace the glass unit and rebuild the frame so it seals properly again.
- Stress cracks at drilled hardware holes on frameless shower panels. Ontario’s slab foundations settle, and when they do, the curb under a frameless Mr-Glass shower shifts just enough to put pressure on the hinge points. The glass cracks at the drilled hole. We see this constantly in 1950s through 1980s homes across Ontario, and the fix is more than caulk – it’s rebedding the curb and installing a reinforced panel.
- Discoloration and pitting on metal frames near stucco exteriors. Sprinkler overspray and Santa Ana-driven debris etch Mr-Glass metal frames on Ontario homes with stucco walls. The moisture wicks into the frame channels and leaves pitting that looks worse every season. We restore what we can and replace what’s too far gone.
- Sliding closet doors that bind after years of hard water and dust. Ontario’s dry, dusty summers coat Mr-Glass closet tracks with grit that grinds against the rollers. Combined with hard water residue from bathroom humidity, the track wears unevenly and the door sticks. We rebuild the track and install new rollers so the door moves quietly again.
Mr-Glass Service in Ontario: What Local Conditions Mean for Your Equipment
Euclid Avenue’s historic district has dozens of post-war homes with unreinforced masonry walls, and here’s what that means for Mr-Glass owners specifically: many original sliding shower doors were installed on out-of-plane walls, which are walls that run parallel to the ceiling joists and don’t carry roof load the way structural walls do. When a seismic retrofit is done – and Ontario’s older masonry homes often get foundation bolting and wall bracing under California’s retrofit requirements – those out-of-plane walls shift slightly. The shift is maybe an eighth of an inch, but for a tempered glass panel anchored to that wall with original 1960s hardware, an eighth of an inch is enough to start a stress crack. Contractors from neighboring cities who don’t work in Ontario’s older housing stock would re-caulk the panel and call it done. We know that’s a temporary fix. We’ve replaced Mr-Glass panels in Euclid-adjacent homes where the real problem was the wall, not the glass. At a 1970s rancher off Vineyard Avenue, our tech found a Mr-Glass frameless shower panel with a stress crack running from the top hinge. The slab foundation had settled a half-inch, so rebedding the curb and installing a reinforced glass panel with soft-close hinges solved the leak and tripled the panel’s lifespan. That’s the kind of repair you only learn by working in Ontario’s older neighborhoods, not from a catalog.
Mr-Glass Models & Products We Service in Ontario
Our crew handles the full Mr-Glass residential and light commercial line. That includes tempered glass shower enclosures (frameless and semi-frameless), sliding shower doors with roller-bearing tracks, mirrored wardrobe doors and closet sliders, and custom-cut table tops and shelving. We keep common OEM rollers, seals, and hinge kits on our trucks so we can often complete a track rebuild or roller replacement in one visit to an Ontario home. When a Mr-Glass unit is over 15 years old with multiple failed seals and corroded frames, we’ll tell you straight: patching it again is throwing good money after bad. A full panel replacement costs more up front but won’t fail again in six months. For more on our broader Mr-Glass work across the region, see our Mr-Glass sales & service page.
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AfterMr-Glass Service Pricing in Ontario

Here’s what Mr-Glass work typically costs in the Ontario market. These are written line-item ranges, not vague estimates:
| Service | Typical Price Range |
|---|---|
| Mr-Glass shower door roller replacement | $150 – $450 |
| Mr-Glass frameless shower panel replacement (custom cut) | $1200 – $3500 |
| Mr-Glass sliding closet door track rebuild | $300 – $800 |
| Cabinet refacing with Mr-Glass inserts | $4000 – $13000 |
What drives the number up or down: the age of the unit, whether OEM parts are still available, whether the framing or curb needs rebedding, and how much custom cutting the glass requires. Every estimate we write is free, and it’s a written price – not a ballpark, not a range you have to guess at. The number we give you on day one is the number on the invoice. Call (341) 895-1170 to schedule yours.
Serving Ontario, CA - Our Local Coverage Area
We’re based in the Ontario 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 Ontario
Yes, if the hardware is still structurally sound and OEM parts are available. We replace the glass and reuse the original hinges, brackets, and handles when they’re in good condition. If the hardware is corroded or the holes are egged out from stress, we’ll recommend new hardware that matches the original mounting points so you’re not drilling fresh holes in the tile. Call (341) 895-1170 for an exact quote.
Mineral deposits from Ontario’s hard water accumulate on the track and the roller bearings, which makes the rollers skip instead of roll. The door then bounces, jumps the track, and slams against the frame. We clean the track, replace the rollers with OEM Mr-Glass parts when available, and adjust the alignment so the door doesn’t work against itself. The fix usually takes one visit.
It depends on the model. For most Mr-Glass sliding doors, we use OEM rollers because aftermarket kits rarely match the track geometry, and a mismatched roller will wear the track unevenly and fail faster. When OEM parts are discontinued, we source exact-spec aftermarket components or machine replacements. We’ll tell you which option fits your door before we order anything.
Yes. Fogging between panes means the seal on the insulated glass unit has failed, and there’s no cleaning fix for that. We remove the old unit, replace the glass with a new sealed unit cut to the exact dimensions, and rebuild the frame so the new glass sits properly. In Ontario’s hot attics, a quality seal is the difference between five years and twenty. Call (341) 895-1170 and we’ll take measurements the same week.
Most Bathroom Remodeling - Ontario frameless shower enclosure replacements take two to three working days from template to final install. We template on day one, cut the glass to spec, then return to set the panels and seal everything. The bathroom stays usable for most of the process, and we leave the job site cleaner than we found it. That’s The Kingswell Way, and it’s been our standard since 2004.
Service Areas Near Ontario
We run Mr-Glass service calls from Ontario into the surrounding Inland Empire communities. You’ll find us working in Riverside’s Arlington and Canyon Crest neighborhoods, the older pockets of San Bernardino, and the mid-century tracts of Claremont. For jobs further west, see our Mr-Glass service in Riverside page or our Mr-Glass service in Anaheim page. If you’re in Ontario or right next door, check our Ontario service area page for coverage details.
Book Your Mr-Glass Service in Ontario Today
Give you a number before we pick up a tool – that’s just how this works. Call (341) 895-1170 for a free written estimate on any Mr-Glass repair or replacement in Ontario. A real person answers, we show up in the window we gave, and the price is the price.
Written by Trevor Nash, Owner at Penhallow Remodeling Riverside, serving Ontario and the Inland Empire since 2004.












