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 Los Serranos, CA | San Bernardino Contractors
If you’re searching for Mr-Glass construction service in Los Serranos, here’s the short answer: San Bernardino Contractors is an independent Mr-Glass service provider serving the 91709 ZIP, and we specialize in what makes Mr-Glass work different here – hillside settling, Santa Ana wind grit, and winter runoff that flatland contractors never account for. We install, repair, and adjust Mr-Glass frameless shower enclosures, semi-frameless sliders, and glass-to-glass corner systems across the Chino Hills foothills. Call (855) 473-5620 for a free estimate. Ruben Castillo, our owner, grew up working on Inland Empire homes, and our crew’s been handling Mr-Glass hardware on slope-conditioned lots long enough to know what fails and why.
Why Los Serranos Residents Choose Us for Mr-Glass Service
We’re not a manufacturer call center. We’re the crew that shows up with OEM Mr-Glass hinges, handles, and seals in the truck, plus aftermarket rollers and sweeps we’ve tested on hillside homes where standard parts wear out fast. Los Serranos homeowners call us because we can look at a Mr-Glass slider that’s binding on one side and tell you within five minutes whether it’s a worn roller, a racked opening, or both. That matters when your house sits on graded terrain off the 71 corridor, where the ground shifts in ways that don’t show up in a product manual.
Ruben Castillo spent weekends as a kid watching his uncle frame garages and reroof houses in San Bernardino’s Westside, then sharpened the trade at San Bernardino Valley College. Two decades later, he still checks every Mr-Glass install the way he learned to check a load path: measure twice, shim once, and don’t call it done until the door swings square and seals tight. That’s the standard we bring to every Los Serranos job, and it’s why neighbors on the same block tend to call us one after another. See how our broader Mr-Glass work fits across the region on our Mr-Glass sales & service page.
Styles & brands we work with







Common Mr-Glass Construction Problems We Solve in Los Serranos
Here’s what we see on Mr-Glass installations in the 91709 foothills, week after week:
- Doors that bind or leak from hillside settling. Graded lots along the Chino Hills don’t stay put. Soil creep racks shower openings out of square, often by a quarter inch or more. Standard Mr-Glass hinges can’t compensate, so the door drags at the bottom or leaves a gap at the top. We custom-shim and adjust hinge geometry to bring everything back into plane.
- Roller tracks clogged with Santa Ana wind grit. Those dry fall winds push fine dust through any exterior gap, and it ends up in the bottom track of Mr-Glass semi-frameless sliders. The rollers grind it down, the bearings wear oval, and suddenly the door sounds like a coffee grinder. We clean, replace with sealed aftermarket rollers rated for abrasive conditions, and add brush sweeps where tracks are exposed.
- Water damage behind tile from winter runoff. Los Serranos gets most of its rain in a few hard weeks. When a Mr-Glass frameless enclosure wasn’t sealed for slope-directed runoff, water follows the tile grout and rots the substrate behind it. We re-seal with a full perimeter bead, add a low-profile threshold sweep, and catch the problem before the subfloor turns to sawdust.
- Cracked glass at stress points from thermal cycling. Inland summer heat climbs past 100°F, then nights drop 30 degrees. Glass expands and contracts. If Mr-Glass hardware was over-tightened during installation, the stress concentrates at the hinge plate or glass-to-glass corner clip. We’ve replaced cracked 3/8-inch tempered panels where the original installer cranked the clamp down like a lug nut.
- Corroded frames and hinges from hard water and humidity. Los Serranos tap water is mineral-heavy, and shower humidity accelerates oxidation on plated Mr-Glass hardware near the base of the door. We swap in OEM replacement hinges or upgrade to aftermarket stainless where hillside moisture makes the factory finish fail early.
Mr-Glass Service in Los Serranos: What Local Conditions Mean for Your Equipment
Los Serranos sits at the foot of the Chino Hills, which means the ground under your house is moving more than you think. We’re not talking about a dramatic slide in most cases. It’s slow, patient soil creep on the steeper lots along the Los Serranos side of the hills, the kind that shifts a door frame an eighth of an inch every few years until one morning the glass no longer swings clear. Homes around the Los Serranos Country Club area and along the newer hillside tracts off the 71 Expressway are the ones we see this on most. The winter storms send runoff down those graded slopes fast, and if a Mr-Glass enclosure was installed square to a frame that’s since gone half an inch out of level, the door is going to bind at the strike and leak at the sweep. Flatland Chino or Ontario contractors don’t see this often enough to plan for it. We do, because it’s the first thing we check on any Mr-Glass service call in Los Serranos, and it’s why we keep shim stock and oversized sweep options on hand instead of hoping the factory part still fits.
Mr-Glass Models & Products We Service in Los Serranos
Our crew covers the full Mr-Glass shower enclosure line you’ll find in Los Serranos homes, from frameless shower doors using 3/8-inch tempered glass to semi-frameless sliding shower enclosures, custom glass-to-glass corner shower systems, and heavy-duty barn-door shower sliders. When we can, we source OEM Mr-Glass hardware – hinges, handles, seals – to keep the factory fit and finish. If OEM parts are backordered, we substitute aftermarket rollers and seals we’ve tested for durability under hillside settling and Santa Ana grit. We’re an independent Mr-Glass provider, not manufacturer-authorized, which means we give you straight recommendations about repair versus replacement for structures across the foothills. We always lean repair for worn seals or misaligned doors. When glass is chipped or frames are corroded, we say so and price the replacement honestly. You’ll get the same candor on every project, which is the point of our Los Serranos service area coverage.
See the difference
Before
After
Before
After
Before
AfterMr-Glass Service Pricing in Los Serranos
| Service | Typical Price Range |
|---|---|
| Frameless Glass Shower Enclosure | $4,500 – $12,000 |
| Walk-In Shower Installation | $4,500 – $12,000 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
| Shower Replacement | $3,000 – $8,500 |
What moves the price on a Los Serranos project is the existing opening geometry. An out-of-level opening from slope settlement adds custom shimming and hinge adjustment time. A standard square opening doesn’t. The free estimate includes a site check, glass thickness selection, and a written line-item quote so you’ll know exactly what’s covered. Call (855) 473-5620 for a fixed price, no change orders.
Serving Los Serranos, CA — Our Local Coverage Area
We’re based in the Los Serranos area and know this community well, and we also offer Mr-Glass service in Chino. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Mr-Glass Construction in Los Serranos
Can a Mr-Glass shower enclosure be installed on a sloped or out-of-level floor common in Los Serranos hillside homes?
Yes, it can, but it takes more than a standard install. The opening gets shimmed and the hinges adjusted to compensate for the slope, which is necessary on many Los Serranos hillside homes where soil creep has racked the frame. Standard installers will often just hang the door and call it done, leaving a gap that leaks. Call (855) 473-5620 and we’ll measure the actual level before we quote it.
How do Santa Ana winds affect Mr-Glass shower door rollers and tracks?
Santa Ana winds push fine dust and grit from the dry foothills into exposed tracks, which grinds down factory rollers and makes the door rough within a season or two. We replace worn rollers with sealed aftermarket units that handle the abrasive conditions better than the original parts on semi-frameless Mr-Glass sliders.
What’s the best way to prevent leaks in a Mr-Glass frameless enclosure during heavy winter rains?
The answer is a full perimeter silicone bead combined with a threshold sweep, which is what we add on every Los Serranos install where slope runoff can hit the enclosure during the short but intense rainy season. The factory seal alone often isn’t enough on graded lots.
Do you replace just the glass in a Mr-Glass shower enclosure if it cracks, or must the whole unit be replaced?
You can replace just the glass panel if it’s a clean crack and the existing frame and hardware are in good condition. If the frame is corroded or the hinges are worn from years of settling, full replacement often costs less long-term. We’ll be straight with you either way, and the estimate is free.
How long does a typical Mr-Glass shower enclosure installation take in a Los Serranos home?
Most Mr-Glass installations take one to two days, but hillside projects with significant out-of-square openings can add a day for custom shimming and adjustment. You’ll get a firm timeline in the written quote. Call (855) 473-5620 to check current availability.
Service Areas Near Los Serranos
We run Mr-Glass service into Fontana, Bloomington, Rialto, Sunnyslope, Glen Avon, and Muscoy from our Los Serranos base. If you’re up the hill, see our Mr-Glass service in Lake Arrowhead page. If you’re on the valley side, check Mr-Glass service in El Cerrito Corona.
Book Your Mr-Glass Service in Los Serranos Today
If you need Mr-Glass shower glass installed, adjusted, or replaced in Los Serranos, call Ruben and the crew at (855) 473-5620 for a free estimate. Same-day and next-day visits are available for urgent leaks. One contractor, every phase – from the roof down to the shower glass.
Written by Ruben Castillo, Owner at San Bernardino Contractors, serving Los Serranos and the Inland Empire.