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Mr-Glass Construction in Pomona, CA | Square One Builders
We provide independent Mr-Glass window, door, and glass service across Pomona, from the 1920s bungalows near downtown to the newer subdivisions by the 10 and 60 freeways, and we also handle Mr-Glass service in Claremont. What makes our work here different is simple: we treat Mr-Glass retrofit systems as products that have to survive Pomona’s inland heat and Santa Ana winds, not as catalog items that drop into a perfect opening. Most Pomona homes we service were built before 1960, and their walls rarely measure square, so we template, shim, and flash to the actual building. Call (877) 688-9930 for a free estimate on any Mr-Glass repair or replacement.

Why Pomona Residents Choose Us for Mr-Glass Service
We have spent years working on Mr-Glass vinyl retrofit double-hungs, aluminum sliders, and patio doors in Pomona’s older housing stock. Brand familiarity matters here because these units behave differently in a 1928 Spanish Colonial than they do in a 2010 infill tract home. Our crew, led by Brent Calloway, has worked Pomona’s pre-1950 core long enough to know which failures are product-related and which are installation-related. That distinction saves homeowners real money, because not every fogged window needs a full replacement. We source OEM Mr-Glass glass units, sashes, rollers, and hardware where the profile is still supported, and matched-spec aftermarket insulated glass when it is not. We are a licensed general contractor, insured and bonded, and we carry the full-scope capability to fold window work into larger remodels or ADU builds under one contract. For a deeper look at the brand itself, see our Mr-Glass sales & service overview page.
Styles & brands we work with







Common Mr-Glass Construction Problems We Solve in Pomona
- Fogged or failed dual-pane sealed units. South- and west-facing windows in Pomona take relentless inland sun, and the seal between the panes eventually gives out. The glass fogs, the desiccant saturates, and the unit loses its insulative value. We replace the insulated glass unit itself, not the whole frame, when the frame is still sound.
- Vinyl frame and sash warping on older retrofit installs. In Pomona’s 1920s and 1930s bungalows, the original rough openings have often sagged or been shimmed out of square. A vinyl retrofit window forced into that opening will bind, stick, or warp over time. We re-template the opening, correct the shim pack, and reset the sash so it actually operates.
- Weep-hole and sill-pan leaks after wind-driven rain. Santa Ana winds push rain sideways, and Pomona’s older neighborhoods see this every fall. When a prior installer caulked over the weep holes or skipped the sill pan, water gets trapped and finds its way inside. We pull the sash, clear the drainage path, and re-flash the opening properly.
- Roller, latch, and weatherstripping failure on patio sliders. Years of grit and dust from Pomona’s dry climate wear down the rollers and bottom track on Mr-Glass vinyl patio sliding doors. The door gets hard to move, then the latch stops catching. We replace rollers, realign the panel, and install new weatherstripping so the door slides clean again.
- Custom-cut glass and mirror panel replacement. Pomona has a lot of older homes with custom shower enclosures and storefront glass along Holt and Mission. When a panel cracks or a mirror delaminates, we cut and install matched-spec replacement glass on site.
Mr-Glass Service in Pomona: What Local Conditions Mean for Your Equipment
Pomona sits at the exact seam between LA County and the Inland Empire, with a building stock that spans 1920s citrus-belt bungalows, mid-century tract homes, and large industrial and warehouse parcels along the 10 and 60 freeways. That split matters for Mr-Glass work in a way it does not in, say, Claremont or La Verne. In the older core around downtown and along Holt and Mission, the pre-1950 homes routinely hide original knob-and-tube or early cloth wiring and undersized service panels behind updated facades. When we cut in new window openings, enlarge an existing rough opening, or build an ADU shell with Mr-Glass windows, that electrical upgrade is not optional, and it has to be sequenced into the same permit scope before the walls get closed. On a Spanish Colonial bungalow off Holt, the owner’s Mr-Glass retrofit sliders were leaking at the sill every time the Santa Anas pushed rain sideways, and two sealed units on the west elevation had gone foggy. We pulled the sashes, found the prior crew had caulked the weep path shut, re-flashed and reinstalled with OEM rollers and replacement insulated glass, then opened a service discussion with the owner because the panel behind the new opening was still on knob-and-tube. The windows stopped leaking, and the electrical scope got folded into the same permit rather than discovered later as a surprise. That is the difference between window service and full-scope construction service in Pomona: we catch the wall behind the window, because this city’s housing stock usually has something back there worth knowing about. For broader context on the neighborhoods and construction patterns, see our Pomona service area page.
Mr-Glass Models & Products We Service in Pomona
We work on Mr-Glass vinyl retrofit double-hung sliding window systems, the Mr-Glass aluminum series single-hung and slider windows, Mr-Glass vinyl patio sliding doors, and Mr-Glass custom-cut glass and mirror panels for showers and storefronts. Parts sourcing runs on a simple rule: OEM Mr-Glass glass units, sashes, rollers, and hardware where the profile is still supported, and matched-spec aftermarket insulated glass when it is not. We will not drop a cheap sealed unit into a good frame just to hit a number. On older retrofit windows in 91766 and 91767, we tell owners honestly when a full frame replacement beats chasing parts, because re-glazing a twisted 1980s frame usually just buys another leak. We keep common roller assemblies, latches, balances, and weatherstripping set aside for fast Pomona turnaround.
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AfterMr-Glass Service Pricing in Pomona
Window and glass work in Pomona runs on a wide band because the housing stock is so varied. A simple insulated glass unit replacement on a newer tract home costs far less than a full frame replacement on a sagging 1920s bungalow. Here are the ranges we see most often:
Common Mr-Glass Project Costs in Pomona
| Service | Typical Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| ADU Construction (with windows/doors) | $90,000 – $220,000 |
What drives the number: whether the existing frame is salvageable, how far out of square the rough opening is, whether the wall behind the window needs electrical or structural work, and whether you are doing a single opening or a whole elevation. A free estimate means we come out, measure, and give you a written line-item quote. Call (877) 688-9930 to schedule yours.
Serving Pomona, CA — Our Local Coverage Area
We’re based in the Pomona area and know this community well, with Mr-Glass in La Verne also within easy reach. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Mr-Glass Construction in Pomona
No. Fogging between the panes means the sealed insulated glass unit has failed, not necessarily the frame. We replace the glass unit itself with OEM or matched-spec aftermarket insulated glass when the frame is still square and operating. A full replacement only makes sense when the frame is warped, leaking at the rough opening, or too far out of specification to re-glaze. Call (877) 688-9930 and we will tell you which path applies to your windows.
The winds push rain sideways into the track, and if the weep holes were caulked over by a prior installer, the water has nowhere to go. Grit from Pomona’s dry season then mixes with that trapped water and grinds down the rollers. We pull the panel, clear the drainage path, re-flash the sill, and replace the rollers and weatherstripping. It is a same-visit fix in most cases.
Often yes, but it depends on the rough opening. Many Pomona bungalows from the 1920s and 1930s have openings that are no longer square or level. We can shim and template a retrofit window into a reasonably sound opening without reframing. If the framing has rotted or shifted too far, a new buck or partial reframe is the honest answer. We will tell you after we measure, not before.
Pomona is inland and not in a high-wind zone the way coastal cities are, but impact-rated windows still pay off here. They reduce solar heat gain through long inland summers and hold up better against Santa Ana-driven debris. If you are building an ADU, impact glass also helps meet Title 24 energy requirements, and we offer Mr-Glass repair in Montclair for similar projects. Call (877) 688-9930 for a quote on the window package for your ADU or addition.
No. Square One Builders is an independent construction company, not a Mr-Glass dealer or franchise. We are not the manufacturer’s authorized service arm, and our work is not covered by the Mr-Glass factory warranty. What we offer is direct, local service from a licensed general contractor who knows these window systems and Pomona’s housing stock well. For product warranty claims, you would go through the dealer who sold the windows. For installation, repair, and replacement work, you call us.
Service Areas Near Pomona
We serve Pomona and the surrounding corridor, including La Verne, Claremont, Montclair, and Norco, plus Corona for larger projects. For work east of the 15, see our Mr-Glass service in Chino page. For the southern corridor, we cover Mr-Glass service in Coto De Caza as well.
Book Your Mr-Glass Service in Pomona Today
Start from square one, build it right. If your Mr-Glass windows are fogging, sticking, leaking, or you are planning an ADU or addition with a new window package, call (877) 688-9930 for a free estimate. We will come out, measure, and give you a straight answer.
Written by Brent Calloway, Owner & General Contractor at Square One Builders, serving Pomona since the early 2000s.