Kitchen remodeling
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FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Why Corona Homeowners Choose Mr-Glass Construction
Square One Builders provides independent Mr-Glass construction service across Corona, and we’ve built our reputation on one specific thing: knowing how Mr-Glass fabricated glass and mirror behaves inside a real bathroom, not just in a brochure. We cut, fit, and install Mr-Glass shower enclosures, mirrors, and glass panels on our own jobsites throughout Corona, which means we understand the blocking, the moisture conditions, and the edge finishes that make or break the work. We are not affiliated with or authorized by Mr-Glass. We’re an independent Corona contractor who has spent years learning these materials hands-on, so we can specify, install, and correct them without leaning on a manufacturer dealer network. Call (877) 688-9930 to talk through your project.

Why Trust Square One Builders for Your Mr-Glass Construction?
Most contractors treat a glass shower enclosure as a finish item they order at the end of a job. We treat it as a structural piece of the bathroom. That distinction is why our Mr-Glass work holds up in Corona’s 92882, 92883, 92877, and 92878 ZIP codes while cheaper installs start to sag, chip, or desilver within a few summers. Brent Calloway, our owner and general contractor, grew up in the Midway City pocket off Bolsa Avenue and has spent the better part of three decades on Orange County and Inland Empire homes. He learned the fundamentals through the Construction Technology program at Golden West College, then spent years doing the kind of ground-level work no classroom covers: hauling material, reading shop drawings in parking lots, asking questions until the answer was straight. That same instinct drives how we handle Mr-Glass projects. If a wall needs solid blocking behind a hinge, we open the wall. If a panel has a chip, we say so and we replace it. We don’t patch things that shouldn’t be patched.
Styles & brands we work with







Common Mr-Glass Construction Problems We Fix in Corona
- Frameless shower doors that drag and hinges that loosen. Mr-Glass 3/8″ frameless shower doors are heavy. When they’re hung on light framing or blocking that was never installed, the door walks out of plumb, the bottom edge drags, and the hinge screws strip over time. This is the single most common Mr-Glass failure we see in Corona bathrooms, especially in older South Corona homes around Grand Blvd and 6th St where the original framing predates frameless glass entirely. The fix isn’t adjusting the hinge; it’s opening the wall, adding solid blocking, and re-setting the panel plumb.
- Yellowed, hardened sealant on shower glass and railings. Factory-applied sealant on Mr-Glass shower enclosures and glass railings hardens and yellows with age, then lifts at the frame. Corona’s hot, dry summers and Santa Ana wind events accelerate this on south-facing bathroom walls, where UV exposure is constant. Once the sealant lifts, water gets behind it and the damage compounds.
- Creeping black desilvering on wall mirrors. Mr-Glass mirror panels installed with mastic or adhesive over painted or damp drywall eventually release at the edges. Moisture gets behind the silver backing and the black creep starts. This is a moisture problem as much as an adhesive problem, and in Corona’s master-planned bathrooms where exhaust fans are undersized for the square footage, it shows up faster than homeowners expect.
- Chipped arris edges on glass shelves and table tops. Mr-Glass glass shelves and table-top panels with a flat-polish only finish chip at the arris when they’re cut short or left unsupported at the bracket. We see this on shelves that were never properly measured for the alcove, or on table tops where the support points were spaced too far apart.
- Enclosure leaks at the sweep and curb. When a Mr-Glass frameless shower is out of plumb by even a quarter inch, the door sweep doesn’t seat against the curb and water escapes onto the bathroom floor. Corona homes with expansive clay soils shift seasonally, which means a shower that was plumb when installed may not be plumb two drought cycles later. Re-setting the enclosure is the only permanent fix.
Mr-Glass Parts & Our Repair-vs-Replace Approach
We spec factory-original Mr-Glass hardware where the part number and the finish actually matter: hinges, clamps, handles, and channel. Those components carry the load and they have to match the glass thickness and the existing holes. For consumables like seals and adhesives, we use quality aftermarket options where they outperform the OEM material, particularly in Corona’s heat and moisture conditions. But the honest call on glass itself is usually replacement, not repair. Chipped or desilvered panels cannot be reworked in the field, and re-tempering is not a field option. When a Mr-Glass panel has a chip at the bottom edge or the mirror backing has started to creep, we’ll tell you plainly: that panel gets measured, ordered, and replaced. We don’t patch what can’t be patched. If you’re not sure which side of that line your project falls on, call (877) 688-9930 and we’ll walk you through it.
Our Mr-Glass Service Process – Step by Step
- 1
On-site diagnosis. We inspect the existing Mr-Glass panel, the hinges, the blocking behind the wall, and the seal condition. In Corona, we’re also checking for the seasonal movement that comes with expansive clay soils and foothill slope conditions. If the enclosure is out of plumb, we find out why before touching anything.
- 2
Repair or replacement plan. We tell you which Mr-Glass components can stay, which need replacing, and what the honest cost difference is between the two. We spec factory-original Mr-Glass hardware where the finish and part number matter, and we explain where an aftermarket seal is the better call.
- 3
Installation and blocking. If we’re hanging a Mr-Glass frameless panel, we make sure the wall framing behind every hinge has solid blocking. If it doesn’t, we open the wall and add it. Mr-Glass glass gets set plumb, sealed correctly, and tested under real water flow before we call the job done.
- 4
Testing and handover. We run the shower, check the sweep, check the seals, and verify the door swings clean. We walk you through what to watch for in Corona’s dry-heat conditions and how to keep the seals from yellowing. If the panel needs to be replaced later, we have your measurements on file.
See the difference
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AfterMr-Glass Products We Service & Install in Corona
Our Mr-Glass work covers the full range of fabricated glass and mirror: custom frameless shower glass and door assemblies in 3/8″ and 1/2″ tempered, mirror and beveled wall-mirror panels including LED-backed options, fabricated glass table tops and shelves, and interior glass partitions. We also install Mr-Glass glass railing and balustrade panels for stair and patio work. On the service side, we handle hinge and clamp replacement, seal replacement, panel re-setting, full glass replacement, and complete enclosure retrofits. Mr-Glass doors and panels get fabricated to measure, so we don’t stock finished glass locally; we store measurement records and hardware specs so replacement glass can be ordered quickly when the need arises.
We Also Service These Brands
Square One Builders is a full-scope general contractor, not a single-brand shop. Alongside Mr-Glass, we work with KraftMaid cabinetry, Cambria and Silestone countertops, and Kohler plumbing fixtures. That matters because a Mr-Glass shower enclosure rarely exists in isolation: the vanity, the counter, the tub, and the fixtures all have to work together. One contractor, every system.

FAQs – Mr-Glass Construction Service in Corona
No. Tempered glass cannot be re-tempered in the field, and a chip at the edge compromises the panel’s structural integrity. The honest fix is measurement and replacement. If you have a chipped Mr-Glass panel in Corona, call (877) 688-9930 and we’ll measure for a replacement that matches the existing hardware.
Almost always, the wall blocking behind the hinges was never installed, or the house has shifted enough to throw the panel out of plumb. Corona’s expansive clay soils make this worse over time. The fix is structural: open the wall, add solid blocking, re-set the hinges, and re-hang the panel. Adjusting the hinge alone won’t hold.
Yes. We install Mr-Glass mirror and beveled wall-mirror panels, including LED-backed options. The critical step in Corona is surface prep and ventilation: we don’t bond mirror panels over painted or damp drywall, and we check the exhaust fan’s actual airflow before installation. Those two things determine how long the silver backing holds.
For most residential walk-in showers, 3/8″ tempered is the right call. It’s heavy enough to feel solid and swing clean on proper hinges. For larger panels or railings, 1/2″ tempered gives better rigidity. We’ll spec the thickness based on your panel size, hinge layout, and whether the enclosure is frameless or channel-set.
In most cases, yes. If the Mr-Glass hinges, clamps, and handles are in good condition and the finish matches, we keep them and fit replacement glass to the exact same measurements. If the hardware has been loaded improperly or the set screws are stripped from a dragging door, we’ll tell you that too. Call (877) 688-9930 with your panel dimensions and we’ll give you a straight answer.
How Much Does Mr-Glass Construction Cost in Corona?
| Project | Price Range in Corona |
|---|---|
| Frameless glass shower enclosure (walk-in shower installation) | $4,500 – $12,000 |
| Tub-to-shower conversion with glass enclosure | $3,500 – $10,000 |
| Shower replacement | $3,000 – $8,500 |
| Bathroom vanity installation | $800 – $3,000 |
| Small bathroom remodel | $5,000 – $12,000 |
Your actual number depends on panel size, glass thickness, whether we need to open walls for blocking, and the condition of the existing hardware. The only way to get an exact quote is to see the space. Call (877) 688-9930 to schedule a free estimate.
Book Your Mr-Glass Service in Corona, CA
We work throughout Corona’s 92882, 92883, 92877, and 92878 ZIP codes and also provide Garden Grove Mr-Glass service. From a dragging frameless door to a full bathroom remodel with Mr-Glass glass and mirror throughout, we’ll give you the straight answer and a line-item quote. Start from square one, build it right. Call (877) 688-9930 to schedule your free estimate.
Written by Brent Calloway, Owner & General Contractor at Square One Builders, serving Corona and surrounding communities.