VLX 100 Double Swing / French Door

VLX 100 Double Swing / French Door in San Antonio, TX | Lightwell Windows San Antonio

The VLX 100 Double Swing door is a paired aluminum French door system built for wide openings that need to feel both grand and effortless. We install this ViewLux-manufactured door throughout San Antonio, TX, and it’s one of the most requested products for patios, dining rooms, and back-of-house transitions where a single door feels cramped. It gives you symmetrical sightlines, a flush threshold that won’t trip a barefoot kid, and multi-point lock hardware serious enough to satisfy a homeowner who actually thinks about security. As an authorized ViewLux partner, Lightwell Windows San Antonio sells and installs this door with full manufacturer warranty protection. Call (325) 420-4173 to talk through your opening size and get a written line-item quote.

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Product Overview – VLX 100 Double Swing / French Door

The VLX 100 series addresses a design problem most French doors in San Antonio ignore: the gap between looking substantial and being substantial. The door presents as two full-height aluminum panels meeting in the center without a visible center post. When both leaves swing open, the opening is completely clear, which matters on the wide patio wall where you’d otherwise accept a fixed mullion breaking the view. Buyers who choose this series are usually replacing a sliding patio door or an old wood French door that’s warped, leaked, or needed a deadbolt adjustment every six months.

The frame is extruded aluminum with a wall thickness of 0.098 inches. That’s not builder-grade. The profile face width measures 2.56 inches, enough to carry the weight of two large tempered lites without flexing. The flush threshold means no raised saddle to step over, a detail wheelchair users, aging-in-place homeowners, and anyone who’s scraped a shin has complained about on older doors. Multi-point locking runs bolts into the frame at multiple latching positions, not just one, which changes how the door holds against wind load and forced entry. Paired aluminum French doors like these get picked over steel because aluminum doesn’t rust in the humidity we get from spring through October, and it doesn’t swell or shrink the way wood does.

The design leans modern, but the finish choices let it sit comfortably on a Craftsman bungalow in Monte Vista, a limestone ranch in Alamo Heights, or a new build in Cibolo. The engineering is in the thermal break, the weather seals, and the sill design. Those are the things you feel on the first cold front in November and the first 100-degree day in July.

Technical Specifications

Max span reaches 96 inches depending on configuration and glass package. If your rough opening is close to that limit, we’ll confirm the engineering on-site before ordering. Tempered glass is standard on doors for safety code compliance in San Antonio; laminated and Low-E are upgrades we quote most often.

Performance Features

Thermal Efficiency

The VLX 100 uses thermal break technology in the frame, rated under NFRC performance standards. The break isolates the exterior aluminum from the interior aluminum so the frame doesn’t conduct heat into the house. In San Antonio, where air conditioning runs nine months of the year, that translates directly to lower energy cost and no interior condensation on cold mornings.

Acoustic Performance

Laminated glass upgrades move the VLX 100 into serious sound control territory. If your French door faces a school drop-off line, a busy arterials like Fredericksburg Road, or a barking-dog neighbor, laminated lites cut transmitted noise noticeably. We can quote both standard and upgraded acoustic packages based on what your wall actually faces.

Airtightness & Weather Seal

Multi-point locking doesn’t just secure the door; it compresses the weatherstripping at every latching point along the frame. That means no air whistling through the center meeting stile during a January cold front. The flush sill carries its own gasket system that seals against the threshold when the doors close.

Waterproofing

During installation, Lightwell Windows San Antonio seals the entire perimeter with AAMA 812 compliant low-expansion foam and backer rod. We water-test the sill and both jambs before trim goes on. The design channels any water that does get past the outer seal into a weep system that drains it back outside. San Antonio’s torrential spring downpours demand exactly this kind of redundancy.

Wind Resistance

The VLX 100 is wind-load rated for local climate requirements. Multi-point locking anchors each door leaf to the frame at multiple points instead of one, so the panel stays rigid under gusts that flex a single-point-deadbolt door. For exposed west-facing patio walls, laminated impact glass adds another layer of protection against flying debris.

Security & Hardware

Multi-point lock hardware runs bolts at the top, middle, and bottom of each active leaf. That distributes force across the full height of the frame, which makes prying far harder than a single deadbolt. We upgrade to keyed-alike cylinders on request so a single key works both leaves and your other exterior doors. Screens are optional, either retractable or omitted entirely for a clean architectural look.

Color & Glass Options

The VLX 100 comes in six finishes. Premium Black and Pure White fit the modern farmhouse and contemporary builds we’re seeing in Boerne and the Dominion. Anodized Silver is the workhorse for mid-century and ranch-style San Antonio homes; it’s also the most scratch-tolerant. Bronze and Champagne lean warmer, suiting stucco and limestone facades in Terrell Hills and Olmos Park. Teak Wood gives you a warm wood tone without the maintenance of a real wood-clad door.

Glass selection depends on exposure and privacy needs. Clear Low-E is the default for any opening that faces the sun, and it’s what we recommend for west-facing patio walls. Frosted and Obscure options handle powder bath entries, pantry transitions, or any French door where privacy matters more than the view. Tempered is mandatory on doors for safety; laminated is the upgrade for impact resistance and noise control. We can mix and match: clear Low-E on the active leaf, obscure on the fixed leaf.

Installation by Lightwell Windows San Antonio in San Antonio

Installation is where a good door goes to die if the crew rushes. We don’t. Every VLX 100 we install in San Antonio starts with a pre-installation inspection of the rough opening: framing condition, levelness of the subfloor, and whether the existing opening has any hidden moisture in the king and jack studs. If we find rot or shifting, we flag it before the door ever arrives.

We set the frame level, plumb, and square, shimming at exactly the load-bearing points, not just where it’s convenient. The perimeter gets sealed with AAMA 812 low-expansion foam on every joint, then backer rod and a high-grade exterior sealant at the inside and outside faces. The sill is set on a continuous bed of sealant, screwed per manufacturer spec, and water-tested with a hose before we button up the interior trim. Every install complies with AAMA 2400/2410 installation standards.

San Antonio’s climate punishes sloppy flashing. We get humidity spikes, hard downpours, and a freeze or two most winters, and any air gap in a door perimeter makes itself known within a year. Proper installation isn’t just about leaks; it’s what keeps the manufacturer warranty valid. If a door is installed incorrectly, ViewLux won’t honor the warranty on frame or hardware, and you’re stuck with the bill. Our work is warranty-safe because we install to the manufacturer’s documented process and the AAMA standard. That’s the whole reason to buy from an authorized partner like Lightwell Windows San Antonio rather than a general handyman.

Frequently Asked Questions – VLX 100 Double Swing / French Door

What is the lead time for the VLX 100 Double Swing / French Door?
Lead time runs 4 to 8 weeks from order date, depending on glass and finish combination. Custom sizes and laminated glass packages add lead time. We don’t place the order until we’ve measured the opening ourselves, so you’re not paying for a door that was spec’d off a bad measurement. Call (325) 420-4173 and we’ll confirm current production timing before you commit.

Does the VLX 100 qualify for energy tax credits?
The answer depends on the glass package you select and the current IRS guidance for residential doors. Low-E glazing and the thermal break in the frame both improve energy performance, which is what tax credit programs look at. We can provide the performance documentation you need after your specific configuration is chosen, and we’ll note what qualifies under the current rules without overpromising.

What warranty comes with the VLX 100 Double Swing / French Door?
The VLX 100 carries ViewLux’s manufacturer warranty on the frame, glass, and finish. Hardware carries its own warranty from the hardware manufacturer. The warranty is only valid when the door is installed per manufacturer requirements, which is exactly how Lightwell Windows San Antonio installs every unit. Our installation workmanship itself is covered by our own guarantee.

Can I customize the size of the VLX 100 Double Swing / French Door?
Yes, within the engineering limits of the series. The maximum span is 96 inches wide, but we can configure individual leaf widths, heights, and fixed panel combinations to match your opening. San Antonio homes have wildly varying rough openings, and this door is not a one-size product. We’ll measure on-site and quote your exact dimensions.

How do I maintain aluminum frames on a French door in San Antonio?
Aluminum frames need very little: wipe the tracks and threshold with a damp cloth, clean the glass with a mild soap solution, and lubricate the multi-point lock mechanism once a year. In San Antonio’s hard-water climate, we recommend wiping down the lower frame after sprinkler systems run, since mineral deposits can etch the anodized finish over time. Avoid harsh chemical cleaners on all powder-coated finishes.

Will the price change once work starts?
No. Our quotes are written and line-item. The only way the number changes is if you change the scope, like adding laminated glass or a retractable screen after the quote. If we open up the wall and find hidden framing damage, we’ll stop, discuss it with you, and get your approval before doing anything extra. You’ll never be surprised by a change order.

Get a Quote – VLX 100 Double Swing / French Door in San Antonio

If you’re pricing a French door for a new build or a replacement in San Antonio, don’t work from guesswork or a big-box store estimate. Call Lightwell Windows San Antonio at (325) 420-4173 to schedule a free on-site measurement and get a written quote for the VLX 100 Double Swing door. We’ll confirm your opening size, walk through glass and finish options in person, and give you the number before you sign anything.

Written by the team at Lightwell Windows San Antonio, an authorized ViewLux installation partner serving San Antonio, TX and surrounding communities.