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Mr-Glass Construction in San Antonio, TX | Mason Remodeling Co San Antonio
We’re Mason Remodeling Co San Antonio, an independent Mr-Glass service provider working across San Antonio, and we handle Mr-Glass window, shower enclosure, and glass component repairs and replacements every week. What sets our Mr-Glass work apart here is that we know how San Antonio’s expansive clay soil and triple-digit summers stress glass frames, seals, and track systems in ways other cities never see. If your Mr-Glass windows or doors are binding, fogging, or off-track, call us at (254) 269-5071 for a free estimate.
Why San Antonio Residents Choose Us for Mr-Glass Service
We’ve spent years solving Mr-Glass failures that trace directly to San Antonio’s soil and heat, not to bad manufacturing. Isaac Pruett grew up in Los Angeles and learned construction fundamentals at Los Angeles Trade-Technical College, then spent two decades swinging hammers across the Southwest before settling into steady San Antonio work. Our crew has replaced Mr-Glass 3100 Series sliding doors in King William historic homes and fixed Mr-Glass 7900 Series single-hungs in north-side slab houses where the doors had racked from post-tension slab movement. We carry OEM Mr-Glass parts when the factory still makes them, and we’re candid when a 30-year-old frame has moved beyond shimming. You get a written price before any tool leaves the truck, and every crew member arrives in a clean uniform with a photo ID badge and a name you’ll already know from our pre-visit confirmation.
Styles & brands we work with







Common Mr-Glass Construction Problems We Solve in San Antonio
- Corner welds cracking on framed Mr-Glass windows: During San Antonio’s dry summers, post-tension slabs lose moisture and the framing around window openings moves. That movement racks Mr-Glass window frames and cracks the corner welds, which then lets the seal between panes fail. You’ll see fogging or condensation inside the glass that won’t wipe off. We replace the sash or the full frame depending on how far the opening has shifted.
- Sliding patio door rollers binding from caliche dust: Fine caliche dust blows from San Antonio’s dry, windy August ground into door tracks. It grinds into Mr-Glass roller bearings and they bind or flatten. The door gets hard to move, then starts dragging. We pull the door, clean and replace the rollers, and realign the track so it glides properly.
- Frameless shower enclosure hinges loosening as wall framing shifts: San Antonio’s humidity swings and clay soil movement make wood wall framing dry and shrink, then swell again. That works Mr-Glass frameless shower hinge pins loose, causing the glass panel to drop and leak at the bottom sweep. We reset the hinges, shim the wall attachment points, and re-square the panel so water stays inside.
- Casement window crank gears stripping from UV-degraded plastic: The 100°F attic-adjacent eaves on San Antonio homes bake Mr-Glass casement window cranks until the internal plastic gears turn brittle and strip. You’ll hear clicking, then the crank spins without moving the sash. We replace the gear assembly or the operator and verify the sash isn’t racking in its opening.
- Glass panels dragging on Mr-Glass 3100 Series doors after slab movement: When San Antonio’s clay shrinks, the concrete under a door track drops, and the header above does not. The top rail bows, the panels drag, and the interlock misaligns. Roller adjustment alone won’t fix it. We reset the frame with a laser level and structural shims under the threshold.
Mr-Glass Service in San Antonio: What Local Conditions Mean for Your Equipment

San Antonio’s post-tension slab-on-grade construction, especially in Loop 1604-adjacent 1980s and 1990s developments like Churchill Estates, creates a failure pattern we see repeated across Mr-Glass sliding doors. The slab edge under the track moves independently from the header as the clay underneath shrinks in August heat. You can adjust the rollers all day and the door will still rack and drag, because the problem is not the roller. The slab has dropped a quarter-inch or more relative to the door frame, and the only lasting repair is to realign the entire frame with a laser level and add structural shims under the threshold. We do this on Mr-Glass 3100 Series doors several times each summer. A homeowner in Boerne or Cibolo on bedrock won’t see this exact failure, but in San Antonio’s clay, it’s routine.
Our crew replaced a Mr-Glass 3100 Series sliding patio door during a Bathroom Remodeling - San Antonio project in Terrell Hills where the dry summer had dropped the deck corner a full inch. The top rail was bowed, the panels were dragging on the track, and the interlock was misaligned. We reset the roller trucks, shimmed the head with composite packers, and re-hung the doors so they glide with two fingers. Then we recaulked the exterior fin with polyurethane to handle the next clay-swell cycle.
Mr-Glass Models & Products We Service in San Antonio
We work on the Mr-Glass 7900 Series Single-Hung, the 3100 Series Sliding Patio Door, the 9900 Series Frameless Shower Enclosure, and the 2000 Series Casement Window. Our parts approach is straightforward: we use OEM Mr-Glass replacement parts when they’re available, because hinge geometry and roller tolerances are hard to match exactly with aftermarket pieces. For discontinued 1990s Mr-Glass series where the factory no longer supplies parts, we source quality aftermarket components with comparable load ratings and tell you the tradeoff before we install. We lean toward repair when the frame is plumb and the glass is intact, and we recommend full replacement when a shifted San Antonio opening has racked the frame beyond shimming. See our full product knowledge at Mr-Glass sales & service.
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AfterMr-Glass Service Pricing in San Antonio

Here’s what Mr-Glass work typically costs in San Antonio. The final number depends on the model, how far the frame has moved, and whether we’re repairing or replacing.
| Service | Typical San Antonio Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Frameless Glass Shower Enclosures | $3,000 – $8,500 |
| Tub-to-Shower Conversion | $3,500 – $10,000 |
What drives the cost is access, frame condition, and whether the slab has shifted the opening. A free estimate includes a full inspection, laser-level check of the frame, and a written line-item price before any work starts. Call (254) 269-5071 to schedule yours.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio area as our General Contractor in San Antonio team 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 San Antonio
We can often repair a Mr-Glass single-hung in a 1980s San Antonio slab house, but it depends on how far the post-tension slab has racked the frame. If the frame is plumb within a quarter-inch and the glass is intact, we repair the sash, replace seals, and re-square the opening. If the frame has twisted beyond shimming, replacement is safer and cheaper long-term. Call (254) 269-5071 and we’ll laser-check it before quoting.
Your slab is moving. San Antonio’s clay shrinks in late-summer heat, and the concrete under the track drops while the header stays put. The frame racks, the panels climb out of the track, and roller adjustment won’t hold. We reset the entire frame with a laser level and add structural shims under the threshold so the door stays on track through the next dry cycle.
Yes. Terrazzo floors hold drill-in anchors well, but they’re unforgiving if the wall framing has shifted. We level the opening first, then set the Mr-Glass hinges and bottom sweep against the actual terrazzo plane, not the original framing line. That keeps the glass panel square so the sweep seals fully against the floor.
We remove the old glazing, inspect the sash for racking, and replace with UV-stable material rated for San Antonio’s attic-adjacent heat loads. If the crank gear has stripped from heat exposure, we replace the operator at the same time, because the plastic internals fail on the same timeline as the glazing.
A Mr-Glass 9900 Series frameless enclosure works well in a 2×4 wall if we reinforce the hinge-side studs first. San Antonio ranch houses from the 1970s and 1980s often have studs that have dried and shifted, so we add blocking behind the tile to give the hinges a stable, load-bearing attachment point. For an exact quote, call (254) 269-5071.
Service Areas Near San Antonio
We serve the greater San Antonio area, including Boerne and the Hill Country west side, Selma and the I-35 corridor northeast, Terrell Hills and Alamo Heights in the center, Cibolo to the east, and Leon Valley on the west. For neighbors to the northwest, see Mr-Glass service in Boerne. Up the I-35 corridor, see Mr-Glass service in Selma. Our full coverage area is listed at San Antonio service area.
Book Your Mr-Glass Service in San Antonio Today
Know who’s coming, know what it costs, know it’s covered, that’s the whole job before the job starts. Call (254) 269-5071 and we’ll schedule a free estimate at your San Antonio home, put the price in writing, and send a background-checked crew member you’ll recognize by name and photo before we arrive.
Written by Isaac Pruett, Owner at Mason Remodeling Co San Antonio, serving San Antonio since 2004.











