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Get your free estimateFast, Reliable Window Replacement Across Alamo Heights
Window replacement in Alamo Heights usually means something different than it does ten miles away. Here, the job is often about restoring a 1930s steel casement sash or matching an original leaded glass pattern in a Spanish Eclectic on a street off Broadway, not just swapping a builder-grade double-hung. A typical full-frame replacement in Alamo Heights runs $1,200 – $2,600 per opening, while a custom steel-to-steel reglaze of an original casement can land between $900 and $1,800 per sash depending on glass type and muntin profile. Call (325) 420-4173 and we’ll give you a written price before anything gets ordered.
We coordinate scheduling from our San Antonio office, and our crews work throughout Alamo Heights weekly. We know which homes have original cast-in-place jambs, which sills rot first, and where the preservation review process matters.
Why Lightwell Windows San Antonio Is Alamo Heights’s Preferred Window Replacement Company
Keith Yamada leads our Alamo Heights window work, and he’s the person who answers when a homeowner calls to ask why a 1928 casement binds in the corner after a cold snap. We’re part of the Cedarwell network, operating to the Cedarwell Care Promise since 2010, and every job is covered by the 365-Day Done Right Promise: if the finished work isn’t right, we make it right, no debate, no countdown.
Alamo Heights homeowners tend to ask the same three things: Will the crew leave dust on the wool rugs? Will the new glass change the look of the house? Will the price change after the work starts? Our answers are concrete. Shoe covers and drop cloths go down before anything else. A photo of the clean-up lands in your inbox before the crew leaves. And the written price we hand you before ordering is the price you pay at the end. Background-checked, uniformed technicians follow the C.A.R.E. values on every visit: Clean up like it is our own home; Ask before we move or touch anything; Respect the family’s time and quiet hours; Explain the price before the work.
We carry eight manufacturer brands, including PGT, Therma-Tru, and ViewLux, so the recommendation fits the house, not an installer’s preferred vendor. A live person answers the phone 24/7 at (325) 420-4173.
Styles & brands we work with







Window Sash Replacement in Alamo Heights
Window sash replacement in Alamo Heights typically costs $700 – $1,600 per sash when the existing frame is sound, and it’s the right call when a steel or wood sash has warped, rotted at the bottom rail, or lost its structural hold on the glass. This page’s focus is the pre-1955 estate homes off Broadway and in the older sections, where the original thin-profile steel casement frames are often worth saving and the sash alone is the failing piece. In those cases, we remove the sash, replicate the profile, and reset the glass with stainless-steel glazing beads rather than tearing out a frame that has another 80 years in it.
When the frame is fine but the sash is gone
We see this in Alamo Heights more than anywhere else in the metro. The cast-in-place steel frame is square and solid, but the operable sash has rusted at the base or the glass has shifted out of plane. Replacing the sash preserves the profile and the sightlines. A novice crew that pulls the whole frame out of a 1930s cast-in-place jamb often finds the rough opening out of square by a quarter inch, and then the replacement binds closed. We measure on site and order to the eighth inch.
Custom replication for period profiles
Many Alamo Heights homes have muntin profiles that are no longer stock items. When a sash needs to match a 1936 original, we order custom glazing and millwork to the profile, not an off-the-shelf approximation. That’s the difference between a window that disappears into the wall and one that announces itself as a replacement.
Window Glass Repair in Alamo Heights
Window glass repair in Alamo Heights generally runs $275 – $650 per pane for insulated glass replacement and $150 – $400 per pane for single-pane reglazing, depending on whether the sash is steel, wood, or aluminum and what glazing compound the original builder used. On a 1938 Tudor just off Broadway, our techs found the original steel casements structurally sound but carrying 85-year-old single-pane glass and failed glazing compound. We measured each sash on site, ordered custom PGT impact-rated insulated glass units in a matching thin muntin profile, and hand-set the new glass with stainless-steel glazing beads. The owners kept their period look and gained a design pressure rating the flat leaded panels could not offer.
Single-pane reglazing for original steel casements
The answer is almost always yes. If the sash is sound, you should not replace the whole assembly just because the glass is cracked or a seal has failed. We remove the old glazing compound, clean the rabbet, and set the new pane with a compound matched to the original. This is quiet, dust-contained work, and it preserves the thin steel profile that makes the street look the way it does.
Impact-rated glass without losing the look
South-facing windows along Broadway take brutal UV exposure in July and August. We regularly replace hazed or chalked glass with impact-rated laminated units that keep the original sightlines. You get hail resistance and lower solar heat gain without a thicker-looking frame.
Trusted Brands We Service in Alamo Heights
We stock parts and order from PGT for impact-rated glazing, ViewLux for slim-profile aluminum and steel-look contemporary sashes, and Therma-Tru for entry doors that match the heavier Spanish Eclectic and Tudor surrounds common in Alamo Heights. Because we carry multiple brands, we’re not trying to force a vinyl insert into an opening that deserves a custom steel sash. Fast turnaround matters, but the larger point is ordering the right unit the first time. Lead times on custom glass and millwork are what they are. We order correctly on day one.
See the difference
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After
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After
Before
AfterCommon Window Replacement Problems We See in Alamo Heights Homes
- Original steel casements pulled from cast-in-place jambs. A crew that doesn’t work in Alamo Heights regularly may not realize those 1930s frames were set before the stucco went on. Removing them means cutting the jamb and rebuilding the rough opening, and the replacement rarely sits square. The cheaper fix is usually a sash-and-glass restoration.
- Hazed seals on south-facing glass. Intense UV exposure along Broadway and the newer sections degrades insulated glass seals in 12 to 18 years, faster than the national average. We see fogging between panes most often on the unshaded south and west elevations, and it’s a straight glass replacement rather than a frame replacement.
- Rotted sill corners on 1920s Spanish Eclectics. The original wood frames in Alamo Heights were built tight to the stucco with minimal flashing. Decades of condensation at the lower corners rots the sill and the bottom rail of the sash. The fix is a local sill splice or a full frame replacement, not a caulk-and-paint job that lasts two monsoons.
- French-casement openings fitted with double-hung inserts. Some homeowners choose a standard insert for an original French-casement opening because the lead time is shorter. The result loses the thin sightlines and can trigger a preservation review mid-project. We steer people away from that mistake before the order goes in.
Pricing for Window Replacement in Alamo Heights, TX
A full-frame Window Replacement in Alamo Heights runs $1,200 – $2,600 per opening for most homes. An insert replacement runs $800 – $1,800 per opening. A sash-only replacement runs $700 – $1,600 per sash. Glass-only work runs $275 – $650 per pane for insulated units. The factors that move the number are glass type, muntin profile, frame material, and whether the opening needs to be brought up to current code for impact resistance. We put every price in writing before anything is ordered, and that price doesn’t change when the job starts. Call (325) 420-4173 for a free estimate, and we’ll walk the house with you and name the line items on the spot.
We Also Serve Cities Near Alamo Heights
Our crews work throughout the metro, including Alamo Heights and the surrounding cities of San Antonio, Schertz, Selma, and New Braunfels. If you’re in one of those cities and have an original steel casement or a Spanish Eclectic window problem, the same crew and the same written-price rule apply.
Serving Alamo Heights, TX - Our Local Coverage Area
We’re based in the Alamo Heights area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Window Replacement in Alamo Heights
Yes. If the steel sash is structurally sound, we remove the failed glass, clean the rabbet, and set a new pane with glazing compound matched to the original. This runs $275 – $650 per pane and keeps the thin steel profile. Call (325) 420-4173 and we’ll tell you if the sash is worth saving before you spend anything.
Alamo Heights requires designated historic properties to go through a certificate of appropriateness review before any window work that changes the exterior appearance. In practice, that means original steel casements must be restored or replicated with matching profiles and muntin patterns, not swapped for standard vinyl or aluminum. We handle the documentation and work with the reviewing body so the job doesn’t stall at the permit desk.
Because the glass and millwork are custom. An original steel casement from the 1930s has a profile and a muntin pattern that no one stocks. The order goes to the manufacturer, the glass is cut and laminated, the profiles are matched, and only then does it land on site. Installation itself is usually one to three days. We give you the lead time in writing with your quote, and the price is fixed before the order goes in.
They do, measurably. Impact-rated laminated glass with a low-E coating reduces solar heat gain through south and west-facing glass, which are the elevations that take the worst sun in Alamo Heights from May through September. Many of the homes we work on along Broadway and the surrounding streets see the biggest effect on rooms that were overheating by 4 p.m. The exact savings depend on the home, but the glass performs.
We splice the sill locally if the rot is confined to the lower corners, and we replace the full frame only when the rot has spread into the jamb. Either way, the work is flashed and painted to match the stucco and the original casing. The price is written before we start, and the crew cleans up before they leave. Call (325) 420-4173 for a free estimate and we’ll check the sill damage in person.
Written by Keith Yamada, Owner at Lightwell Windows San Antonio, part of the Cedarwell network. A light well is what brings daylight deep into a building, and that’s what a well-installed window should do for your home in Alamo Heights.
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.