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Get your free estimateVLX 138 Panoramic Sliding Door in San Antonio, TX | Lightwell Windows San Antonio
The VLX 138 Panoramic Sliding Door is a large-span aluminum slider built for homeowners who want a wall of glass that actually moves. We’re talking panels up to 36 feet wide, gliding on stainless steel bearings with almost no effort. It’s the door you put in when the view matters more than the wall. Lightwell Windows San Antonio is an authorized ViewLux installation partner, which means we sell, measure, install, and warranty this door ourselves, right here in San Antonio, TX. No third-party installer handoff. If you’re remodeling in Alamo Heights, building new in Boerne, or replacing a dated patio slider in Stone Oak, call us at (325) 420-4173 to talk about whether the VLX 138 fits your project.
Product Overview – VLX 138 Panoramic Sliding Door
The whole point of a panoramic door is to get the frame out of the way. The VLX 138 does that with a profile width of just over an inch and a half, so the glass dominates the opening, not the aluminum. You get expansive uninterrupted views, and the ultra-smooth glide on stainless bearings means a panel that weighs hundreds of pounds still moves with two fingers. That’s the engineering that separates a luxury slider from a basic patio door.
Architecturally, this door works in three places: modern builds in San Antonio that want clean sightlines, mid-century remodels that need wide openings without intrusive mullions, and traditional Texas Hill Country homes where the view is the feature. We’ve installed the VLX 138 in all three settings, and the door adapts because you choose the finish, the glass, and the track layout.
Durability comes from the aluminum itself. The 0.138-inch wall thickness means the extrusion resists deflection under wind load and daily use, which matters in San Antonio where spring storms can push a door hard. The thermal break keeps the interior frame from sweating or conducting heat. And the track system is engineered so panels stay square through years of operation, not just the first season.
When you buy the VLX 138 through Lightwell Windows San Antonio, you get the authorized-partner advantage: we know this product’s tolerances, its install requirements, and its failure points. Most door problems in the San Antonio market trace back to bad installation, not bad manufacturing. We fix that by doing the work ourselves. Call (325) 420-4173 for a project conversation.
Styles & brands we work with
Technical Specifications
- Wall thickness: 0.138 inches – heavier than standard residential extrusion, which resists racking and keeps panels square over time.
- Profile width: 1.535 inches – slim sightlines that maximize visible glass area.
- Maximum span: Up to 36 feet wide, depending on panel count and structural conditions.
- Track configurations: 2-Track, 3-Track, and 4-Track – choose based on how many panels stack and how wide you want the opening.
- Glass options: Clear, Low-E, Frosted, Obscure, Black Tint, Gray Tint – plus impact-resistant laminated glass for storm zones.
- Finish options: Premium Black, Pure White, Anodized Silver, Bronze, Champagne, Teak Wood.
- Screen options: Retractable Screen, Sliding Screen.
- Sill options: Flush Sill, Low-Profile Sill, Recessed Sill – pick based on accessibility needs and drainage conditions.
- Performance: NFRC-rated thermal performance via thermal break; AAMA 2400/2410 installation standard; AAMA 812 low-expansion foam sealant on all perimeter joints.
Performance Features
Thermal Efficiency – The VLX 138 uses thermal break technology that rates under NFRC standards for energy performance. In San Antonio summers, that means the interior frame stays cooler to the touch and the AC doesn’t fight the door. Low-E glass options add another layer of solar control.
Acoustic Performance – Sound control ratings are built into the frame and glass package design. If you live near Loop 1604 traffic, an airport approach path, or a busy street in King William, laminated glass upgrades cut transmission noticeably. The tighter the seal, the quieter the room.
Airtightness & Weather Seal – Every perimeter joint gets AAMA 812 low-expansion foam sealant, which prevents air leaks that show up as drafts and energy waste. The gasket system is designed for repeated cycling without losing compression, so the door seals as well in year ten as it does on day one.
Waterproofing – The sill options (flush, low-profile, recessed) are engineered for drainage under real rainfall, not just lab tests. In San Antonio, we see intense short-duration storms that can drive water horizontally. Proper sill selection plus correct flashing keeps water outside the wall cavity.
Wind Resistance – Wind-load rated for local climate requirements, including gusts that exceed what a standard patio door handles. The 0.138-inch wall extrusion and reinforced corners hold the frame rigid. For higher-exposure sites, impact-resistant laminated glass adds structural strength.
Security & Hardware – Multi-point locking on the panels, stainless bearing rollers that won’t corrode or bind, and hardware that sits flush with the frame. Security isn’t an add-on on this series, it’s integral. The track is low-maintenance and won’t deform under panel weight over time.
See the difference
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AfterColor & Glass Options
Premium Black is the most requested finish in San Antonio’s modern builds and townhome infill projects. It disappears into a dark-framed window package and makes the glass pop. Pure White reads crisp and clean against light interiors, and works well on traditional Hill Country exteriors with painted trim. Anodized Silver is the architectural standby, a raw aluminum look that ages evenly and hides fingerprints better than glossy finishes. Bronze suits homes with warmer stone or brick, while Champagne is the more subtle warm-metallic option for Spanish and Mediterranean exteriors in neighborhoods like Monte Vista. Teak Wood gives a wood-grain appearance without the maintenance of real wood, ideal where HOA rules require a wood-look finish.
Glass selection depends on exposure and privacy. Clear maximizes visible light. Low-E cuts solar heat gain, which matters on west-facing openings in San Antonio. Frosted and Obscure give privacy where a door faces a neighbor or street. Black Tint and Gray Tint reduce glare and heat while preserving outward views. Impact-resistant laminated glass is available for storm-rated projects.
Installation by Lightwell Windows San Antonio in San Antonio
We don’t subcontract this. Our crew installs every VLX 138 we sell, and the process is built around the manufacturer’s requirements plus our own field experience in San Antonio, TX. Here’s what you get:
Before installation, we inspect the opening, the rough framing, and the load path. A 36-foot door carries significant weight, and a header that’s undersized or a subfloor that’s out of level will cause problems within the first year. We verify before we order, not after delivery.
On install day, we set the frame level, plumb, and square using shims and laser levels. This is the single biggest factor in whether a panoramic door slides properly for years. A frame that’s racked even a quarter inch will bind panels and wear rollers prematurely. We don’t rush this step.
All perimeter joints get AAMA 812 low-expansion foam sealant, then the interior and exterior flashing goes on per AAMA 2400/2410. That standard covers installation of windows and sliding doors, including water management. We pull the manufacturer’s installation specs for every project and follow them to the letter, because an improper install voids the warranty. Period.
After the door is set and sealed, we run a water test on the sill and lower corners. San Antonio’s monsoon-style rains can expose flashing mistakes fast, and we’d rather find them before you do. Then we clean the glass, remove debris, and walk you through operation and maintenance.
San Antonio-specific considerations: our clay soils move. Foundations shift seasonally, and a door this large needs to be installed with that movement in mind. We also account for west-facing sun, which puts real thermal stress on frames and seals. Our team sees these conditions every week, not just on paper.
Frequently Asked Questions – VLX 138 Panoramic Sliding Door
Lead time for the VLX 138 in San Antonio typically runs 6 to 10 weeks from final measurement to delivery, depending on glass type, finish, and panel configuration. Custom finishes and laminated glass add time. The best way to pin down a delivery date is to schedule a free measurement with Lightwell Windows San Antonio, then we can give you a written timeline that reflects current production schedules. Call (325) 420-4173 to start.
Low-E glass packages on the VLX 138 may qualify for federal energy tax credits if the glazing meets current ENERGY STAR requirements for the South-Central climate zone. Eligibility depends on the specific glass package and the year of installation. We can help you evaluate your options and point you to the documentation you’ll need for tax filing. Call (325) 420-4173 and ask us about qualifying glass packages.
The VLX 138 carries a manufacturer warranty from ViewLux, and that warranty stays intact only when an authorized partner installs the door per factory and AAMA standards. Lightwell Windows San Antonio is that authorized partner in San Antonio. We document every installation, so warranty claims are clean if something ever comes up. We’ll walk you through the exact coverage terms for your configuration before you sign anything.
The VLX 138 can be built to your opening, not just stock sizes. Panel widths, heights, and track configurations are all order-specific within the system’s structural limits. That’s why we measure every project ourselves in San Antonio before ordering. An opening that’s slightly out of square needs to be known about before the factory starts your door. Call (325) 420-4173 and we’ll come out, measure, and give you an exact quote.
Maintenance is minimal: wipe the tracks every few months with a dry cloth to remove grit, and clean the aluminum frame with mild soap and water. Avoid abrasive cleaners that scratch the finish. The stainless bearings are sealed and don’t require lubrication, but track cleanliness keeps the glide effortless. If a panel ever feels stiff, don’t force it. Call us for a service visit at (325) 420-4173.
Get a Quote – VLX 138 Panoramic Sliding Door in San Antonio
The VLX 138 is one of those products that changes how a room feels. If you’re planning a new build or a major remodel in San Antonio, TX, and you want to know what this door costs installed, call Lightwell Windows San Antonio at (325) 420-4173. We’ll schedule a free on-site measurement, review glass and finish options with you, and give you a written line-item quote. No pressure, no guesswork. Just a real number for a door built to open up your home.
Written by the team at Lightwell Windows San Antonio, authorized ViewLux installation partner serving San Antonio, TX and surrounding areas.
Six Reasons Homeowners Choose Lightwell Windows San Antonio
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.
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