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PGT
CGIFree in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Get your free estimateFast, Reliable Window Installation Across St. Augustine
Window installation in St. Augustine, FL is not a one-size-fits-all job. A typical replacement runs between $600 and $1,800 per opening for standard sizes, and $1,500 to $3,500 per opening when impact-rated glass, historic replication, or custom jamb work comes into play. Our crews know Anastasia Island, Lincolnville, and the narrow lots downtown, and we schedule around HARB review so your project keeps moving. Call (904) 914-3691 for a free, written estimate before any work starts.
We are the Window Installation team at Lightwell Windows Jacksonville, part of the Cedarwell network and led by Keith Yamada. We carry eight manufacturer brands, pull the permits, file the HARB paperwork, and put every price in writing before the first tool comes off the truck.
Why St. Augustine Homeowners Choose Lightwell for Window Installation
Word travels fast in a city this old. In Lincolnville and Fullerwood, homeowners compare notes on which crews left dust on the floor and which ones showed up when they said they would. Our reputation in St. Augustine comes from a simple operating rule: the written price is the price, the crew wears shoe covers, and the site is photographed clean before we leave.
Keith Yamada runs every St. Augustine job with the same expectation he would have in his own home. The crew follows 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. If a homeowner has a question at 6 a.m. on a Saturday, a live person answers the phone. Not a recording.
We coordinate with the Historic Architectural Review Board on a weekly basis, so we know what gets approved, what gets sent back, and how to build a submittal packet that passes the first round. That local knowledge saves St. Augustine homeowners weeks of back-and-forth.
Styles & brands we work with
Picture Window in St. Augustine
A picture window in St. Augustine is often the centerpiece of a living room looking out over the marsh, the Matanzas River, or an old oak canopy. The job involves removing the existing opening, reframing or re-flashing as needed, installing a fixed, non-operable unit sized to the view, and finishing the interior and exterior trim to match the home’s era. In the historic core, a picture window replacement usually runs $900 to $2,200 per opening depending on size and glass package; in newer construction on Anastasia Island, it typically falls between $700 and $1,800.
We have done picture windows facing the Tolomato River where the homeowner wanted zero visual obstruction. That means specifying a unit with narrower sightlines, often from ES Windows or ECO Window Systems, and making sure the mullions, if any, align with the original fenestration pattern HARB approved decades ago.
Fixed-Glass Framing Details
On older St. Augustine homes with hand-cut openings, the rough opening is rarely square. We measure each side independently and flash the opening so water never finds a path into the wall cavity. The result is a window that looks original but performs to current Florida Building Code.
When a View Becomes the Priority
For homes in Davis Shores where the intracoastal is the whole point of the room, we recommend low-iron glass. It removes the green tint from standard float glass. Salt air is the other consideration: stainless steel hardware and powder-coated frames hold up far longer than standard aluminum within a few blocks of the water.
Bay Window Installation in St. Augustine
Bay window installation in St. Augustine almost always involves an older home, because bay windows were a favorite of the Victorian builders in the 1880s and 1890s. A bay window projects from the exterior wall, creating a small alcove inside and adding square footage without changing the roofline. In St. Augustine, a full bay window replacement, including new support framing, seat board, and roof flashing, runs $2,800 to $6,500 for a three-unit assembly. That price reflects the structural work required when the original cantilever has sagged, which we see regularly in homes near Maria Sanchez Lake and along St. George Street.
HARB often requires wood or wood-clad exteriors on bay windows in the historic districts, even when the rest of the wall assembly could take vinyl. We file those materials with the submittal packet so the review board sees exactly what the finished elevation will look like.
Structural Support and Seating
A bay window is not just glass. It is a structural projection. We frame the support knee braces, install a seat board rated for the weight, and flash the roof with peel-and-stick membrane under the metal cap. If the original window was shedding water into the wall, that gets corrected before the new unit goes in.
Matching an Original Bay Profile
Spanish Colonial and Victorian homes in St. Augustine have distinct bay profiles. A Victorian bay is typically taller with narrower side units; a Spanish Colonial bay is shallower with wider center glass. We match the proportions of the original opening, which keeps the street-facing elevation looking right and keeps HARB off your back.
Trusted Brands We Service in St. Augustine
Lightwell carries eight manufacturer brands, and for St. Augustine homes we lean on three more than the rest: CGI for impact-rated units that meet Miami-Dade NOA standards, CWS for coastal-rated windows with corrosion-resistant hardware, and ES Windows for slim-profile aluminum units that suit mid-century and modern homes. Because we stock local inventory through our Jacksonville distribution, replacement parts for these brands are rarely more than a few days out. When a St. Augustine homeowner needs a sash or a locking mechanism, we are not waiting on a factory back east.
See the difference
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AfterCommon Window Installation Problems We See in St. Augustine Homes
- Vinyl or unpainted aluminum frames in HARB districts. These pass Florida Building Code but get denied or stop-worked by the Historic Architectural Review Board. The homeowner is then stuck paying to re-order the right materials. We file first, install second.
- Non-impact single-pane units in HVHZ zones. St. Augustine sits in the High Velocity Hurricane Zone. Standard insulated glass without impact glazing fails wind-borne debris requirements and gets flagged on insurance wind mitigation inspections. That can cost thousands in premiums.
- Jalousie replacements that leave the jamb gap open. Original 1950s jalousies in Davis Shores and Lighthouse Park have wider, shallower jambs than any standard window. A straight swap leaves a gap where salt air and rain get into the wall. We rebuild the jamb pocket and flash it correctly.
- Sagging bay window seat boards. The original wood rots, the bay drops, and the opening starts pulling away from the house. A cosmetic glass replacement does nothing. The structure has to be lifted and re-supported before the new unit goes in.
Pricing for Window Installation in St. Augustine, FL
Here is what St. Augustine homeowners can expect to pay based on the jobs we quote most often. Single and double hung replacements run $600 to $1,400 per opening in standard sizes. Casement windows run $750 to $1,700. Horizontal roller and 3-panel slider windows run $800 to $2,200. Picture windows run $700 to $2,200. Bay and bow windows run $2,800 to $6,500 for the full assembly. Impact-rated glass adds 25 to 40 percent. Historic replication with wood or wood-clad exteriors adds 20 to 35 percent depending on the profile. Every quote we write includes tear-out, disposal, lead-safe practices where needed, trim, flashing, and interior finish work. No invoice surprise at the end. Call (904) 914-3691 to schedule your free estimate.
We Also Serve Cities Near St. Augustine
Our crews cover the entire First Coast from St. Augustine outward. We regularly install windows in Jacksonville, Orange Park, Atlantic Beach, and Fernandina Beach. If you are anywhere in that radius, the same crews, the same written-price rule, and the same 365-Day Done Right Promise apply.
Serving St. Augustine, FL - Our Local Coverage Area
We’re based in the St. Augustine 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 Installation in St. Augustine
Yes, if your home sits within one of St. Augustine’s designated historic districts and the exterior appearance, materials, or window proportions change, you need a Certificate of Appropriateness from the Historic Architectural Review Board before installation begins. We prepare the submittal packet, attend the review if needed, and schedule the work around the approval timeline. Call (904) 914-3691 for a free estimate and we will tell you whether your specific address triggers HARB review.
Generally, no. HARB follows the U.S. Secretary of the Interior Standards, which favor wood or wood-clad frames and true divided lites in visible street-facing elevations. Vinyl may be allowed on rear elevations or non-contributing structures in some cases. We will walk you through what your specific property qualifies for before you spend a dollar.
Typically four to eight weeks, depending on the board’s meeting calendar and whether the application is administratively reviewed or requires a full hearing. Complete submittals usually pass on the first round. We file with drawings, material specifications, and color samples included, which is why most of our St. Augustine historic district jobs start installation within six weeks of contract signing. Call (904) 914-3691 and we will map out the timeline for your exact address.
St. Augustine sits in the High Velocity Hurricane Zone, so any new or replacement window must meet Miami-Dade NOA or Florida Product Approval standards for wind-borne debris protection. That typically means impact-rated glass or an approved shutter system. We recommend impact-rated glass in most St. Augustine homes because it removes the shutter step entirely and often lowers wind mitigation insurance scores.
Yes. In Davis Shores, we replaced a row of original 1950s jalousies with PGT impact-rated casements that matched the cottage’s original sightlines exactly. We coordinated with HARB on the mullion pattern and frame color, and the homeowner’s cooling load dropped by an estimated 28 percent. The look stayed period-correct. The performance went from leaky to Miami-Dade rated.
Written by Keith Yamada, Owner at Lightwell Windows Jacksonville, part of the Cedarwell network since 2010.
Six Reasons Homeowners Choose Lightwell Windows Jacksonville
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
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.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.