New windows and doors improve comfort, cut energy bills and add long-term value to your home. Sightline Windows & Doors Clewiston pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
1. Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
2. Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
3. Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line Florida homeowners arrive naming - the most Miami-Dade certifications in the industry$$$
- More Miami-Dade NOA certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe Florida value pick$$
- Vinyl systems built in Florida for Florida codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Miami-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Fast, Reliable Window Replacement Across South Bay
Window replacement in South Bay, FL typically runs $800-$1,500 per opening for impact-rated units, with most full-home projects falling between $8,000 and $25,000 depending on opening count and frame condition. We’re Sightline Windows & Doors, independently owned and operated under the Haven Standard since 2012, and our crews serve South Bay from our Miami (South FL) office. Call (863) 509-1135 to schedule your free measured survey. The written quote you receive is the same document our crew works from. No change orders, no verbal estimates.
South Bay sits in a narrow strip between the Herbert Hoover Dike and active sugarcane fields, and that geography shapes every replacement we do here. The fetch-driven winds that blow across Lake Okeechobee accelerate storm loading on your openings. The cane-burn ash that filters through failed weatherstripping from October through April tells you exactly where your seals have failed. We’ve replaced windows in the concrete-block homes near US-27, the wood-frame houses off Main Street, and the manufactured home communities along SR-80. Each opening requires a measured survey, a written price, and products specified to Palm Beach County’s wind-load and impact-resistance codes.
Why Sightline Windows & Doors Clewiston Is South Bay’s Preferred Window Replacement Company

Our Window Replacement team has documented every one of the 18,000+ openings we’ve installed since 2012 with a photo record the customer keeps. In South Bay, that evidence matters. We’ve worked on homes where the original 1960s jalousie windows still carried the stamp of the agricultural contractor who built the development. We’ve opened walls to find wiring that predates grounded outlets and framing degraded by decades of lake humidity. We document what we find, price it in writing, and get approval before we touch it.
South Bay homeowners review us on the same platforms they use to research every contractor. They read our three-star reviews first, same as we would. What they find is a pattern: when something wasn’t done right, we made it right under the 365-Day Done Right Promise written into the Haven Standard. Not a courtesy. A clause.
Calls to (863) 509-1135 are answered by a live person, 24/7. Scheduling is coordinated from our Miami (South FL) office, and our background-checked, uniformed technicians arrive with license numbers visible. Haven Clause 3: Verified Crews. The person at your door is the person on the record.
Before
AfterOur Window Replacement Services in South Bay
Full Frame Replacement
Full frame replacement in South Bay means removing the entire window unit - jamb, sill, frame, and hardware - down to the rough opening. This is what most South Bay homes built from the 1950s through the 1980s actually need. The original single-pane aluminum frames and jalousie windows in these agricultural-worker houses were never designed for Palm Beach County’s current wind-load requirements, and their jambs have often degraded from decades of lake humidity and cane-burn ash infiltration. We inspect the rough opening for failed waterproofing, undersized framing, and outdated wiring before we quote. Anything we find is documented, priced in writing, and approved before we proceed. The measured survey you keep becomes the scope of work.

Insert Window Replacement
Insert replacement fits a new window into the existing frame, which costs less and disturbs less wall. In South Bay, this works when the original frame is structurally sound and the home’s wiring and waterproofing are intact. We see this most often in manufactured homes and in concrete-block houses from the 1970s and 1980s where the aluminum frame welds haven’t corroded through. We measure the frame squareness, check for lake-humidity damage to hardware, and verify that the existing jamb can accept impact-rated glazing with the proper design pressure for South Bay’s exposed lakeshore location. If the frame won’t pass inspection, we tell you before we quote and shift to full-frame.

Vinyl Replacement Windows
Vinyl frames resist the corrosion that destroys aluminum hardware in South Bay’s persistent lake humidity. We specify vinyl units from ECO Window Systems and ViewLux with reinforced sashes and multi-chamber construction rated for the wind zone here. The U-factor and SHGC (solar heat gain coefficient) are selected for South Bay’s cooling-dominated climate - low SHGC to block solar gain, decent U-factor to keep conditioned air inside. Every unit carries Florida Product Approval or Miami-Dade NOA for its specific design pressure, which in South Bay’s wind zone must account for fetch-driven winds off Lake Okeechobee.

Energy-Efficient Upgrade
Energy-efficient upgrades in South Bay target the single-pane and uncoated glass that still dominates local housing stock. We specify low-E coatings, argon gas fill, and warm-edge spacers from manufacturers like Therma-Tru and Mr-Glass, matched to the opening’s sun exposure and the home’s cooling load. The upgrade only works if the frame and weatherstripping are intact enough to seal against cane-burn ash infiltration. We test for air leakage during our measured survey and document the readings you keep.

Window Maintenance & Care
Window Maintenance & Care extends the service life of units already installed, which matters in South Bay because lake humidity corrodes hardware and destroys weatherstripping faster than inland communities. We inspect and replace weatherstripping, lubricate hardware, check frame drainage, and verify that impact-rated glazing retains its seal integrity. For homes near the cane fields, we also inspect for ash buildup in weep channels and frame tracks, which accelerates corrosion and blocks drainage. This service is scheduled maintenance, not repair - a way to protect the investment you’ve already made.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in South Bay

We draw from eight manufacturer lines - PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux - and we specify by what the opening requires, not by what is in stock. For South Bay’s wind zone and humidity exposure, we most often reach for ECO Window Systems vinyl frames with impact-rated laminated glass, or Mr-Glass units with enhanced corrosion-resistant hardware for lakefront properties. Therma-Tru and ViewLux fill specific performance tiers when the opening geometry or energy targets demand them. We don’t stock inventory in a warehouse; we order to the measured survey, which means the turnaround is fabrication time plus our install schedule. Custom units run 4-6 weeks. Standard configurations can arrive faster.
Common Window Replacement Problems We See in South Bay Homes
- Cane-burn ash infiltration through failed seals. The first major burn of the harvest season sends fine particulate through every gap in aging jalousie and single-pane aluminum frames. Homeowners call us when they wipe ash from interior windowsills in rooms they thought were closed tight. This diagnostic only works once the burn starts, which is why our South Bay inquiry volume spikes in late October and November, not June.
- Lake-humidity corrosion of aluminum frame welds and hardware. South Bay’s position on the southern shore of Lake Okeechobee means persistent humidity that inland Glades communities don’t experience at the same intensity. We’ve replaced hardware on installations less than ten years old where corrosion has seized balances and degraded weatherstripping to the point of failure.
- Non-compliant original windows in pre-1990 housing stock. Most South Bay homes were built for agricultural workers with no thought to hurricane-impact glazing. The original single-pane aluminum and jalousie windows fail Palm Beach County’s current wind-load and large-missile requirements. Replacement without verified Florida Product Approval or Miami-Dade NOA leaves the home non-compliant and ineligible for wind mitigation credits.
- Hidden framing and wiring damage behind original openings. Opening a 1950s-1980s South Bay home for full-frame replacement routinely reveals outdated wiring, undersized or rotted framing, and failed waterproofing. A bid that doesn’t account for these conditions turns into an unpriced change order once the permit-triggered inspection occurs. We price allowances for these conditions in writing before we start.
What Window Replacement Costs in South Bay

| Service / Product | Typical Range in South Bay |
|---|---|
| Impact window, standard single-hung | $900 - $1,800 per unit installed |
| Impact window, standard double-hung or casement | $800 - $1,500 per unit installed |
| Large or custom opening (picture, geometric, bay) | $2,500 - $5,000 per unit installed |
| Whole-home package, typical 3/2 South Bay home | $8,000 - $25,000+ |
| Full frame replacement with framing/wiring repair allowance | Add $400 - $1,200 per opening where needed |
| Insert replacement, qualifying frame | $600 - $1,100 per unit installed |
What moves the price in South Bay: opening count, floor height (second-story work requires scaffolding or lift rental), frame material (vinyl vs. aluminum vs. composite), impact rating and design pressure required for the wind zone, and whether the rough opening needs reframing, rewiring, or waterproofing repair. We measure every opening, test the existing frame, and give you a written price before any work starts. Haven Clause 1. The measurement and the quote are the same document. Call (863) 509-1135 for your free in-home measured survey.
Pricing for Window Replacement in South Bay, FL
A typical insert window replacement in South Bay runs $600-$1,100 per opening when the existing frame passes inspection. Full frame replacement, which most pre-1990 homes need, runs $900-$1,800 per opening for standard sizes, with large or custom openings reaching $2,500-$5,000. Whole-home packages for the 3-bedroom, 2-bath homes common in South Bay’s agricultural-worker housing stock typically fall between $8,000 and $25,000 depending on opening count and the condition we find behind the walls.
We don’t quote over the phone. We measure on site, test your existing frames, and give you a written price you keep. If you have a competitor’s written estimate, we offer a free second opinion - we’ll review their scope and pricing at no charge. The price we write is the price you pay. No change orders unless you approve a written amendment.
Florida Pays You Back

Several programs can offset window replacement costs in South Bay, though final eligibility rests with the program administrator or your carrier:
- My Safe Florida Home matching grants: Up to $10,000 for qualifying wind-mitigation upgrades, including impact-resistant windows and doors that meet Florida Product Approval standards.
- Florida sales-tax exemption: Impact-resistant windows and doors are exempt from state sales tax at purchase.
- Federal 25C energy credit: 30% of product cost, up to $600 per year, on qualifying energy-efficient units.
- Windstorm-premium credits: Average around 25% on the windstorm portion of your premium after a qualified wind-mitigation inspection, which runs $75-$150. Your carrier sets the final percentage.
We document the product approval numbers and energy performance certificates you need to file. The photo record from your job becomes part of your evidence package.
We Also Serve Cities Near South Bay
Our crews work throughout the Glades region and western Palm Beach County. We regularly replace windows in South Bay and in Belle Glade, Pahokee, Clewiston, and Wellington. Each city has its own wind-zone requirements, housing stock characteristics, and permit processes. We adjust our measured survey and product specification to match.
Serving South Bay, FL - Our Local Coverage Area

We’re based in the South Bay 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 - Window Replacement in South Bay
The first major cane burn of the harvest season acts as a free air-seal diagnostic. When ash settles on interior windowsills and smoke smell enters closed rooms, families discover exactly where their original jalousie and single-pane aluminum frames have failed. This timing is specific to South Bay’s position surrounded by active sugarcane fields. Hurricane season brings theoretical risk; the burn brings immediate, visible proof of infiltration. Call (863) 509-1135 after you see ash inside - we’ll measure the openings and give you a written quote for impact-rated replacement that seals against both burn particulate and storm pressure.
We find outdated wiring, undersized or damaged framing, and failed waterproofing behind roughly half the original openings in South Bay’s 1950s-1980s housing stock. These conditions are not visible until the frame comes out, and they’re not optional to address - the permit-triggered inspection will require correction. We build allowances for these conditions into our written contract, document what we find with photos you keep, and price any necessary repair in writing before we touch it. No surprises. Call (863) 509-1135 to schedule the inspection that starts with your free measured survey.
Yes. Palm Beach County requires Florida Product Approval or Miami-Dade NOA for all replacement windows, and South Bay’s exposed lakeshore location means the design pressure must account for fetch-driven winds that accelerate storm loading beyond what inland communities face. We verify the NOA or product approval number for every unit we specify, match the design pressure to your opening’s exposure and height, and document the approval on your photo record. Installing without verified approval leaves your home non-compliant and ineligible for wind mitigation credits. Call (863) 509-1135 and we’ll show you the approval documents for your specific openings.
Impact windows with low-E coatings and proper SHGC ratings reduce solar heat gain, which lowers cooling load in South Bay’s year-round air-conditioning climate. The savings depend on what you’re replacing - single-pane aluminum to impact low-E is a significant improvement; upgrading already decent double-pane is more incremental. The bigger factor in South Bay is often air leakage: original jalousie and failed aluminum frames let conditioned air escape and humid lake air enter, forcing your system to run longer. Impact windows seal that leakage path. We measure air infiltration during our survey and can estimate the improvement. Call (863) 509-1135 for a written analysis with your quote.
Impact-rated windows that meet Florida Product Approval standards and pass a wind-mitigation inspection typically qualify for windstorm-premium credits averaging around 25% on the windstorm portion of your premium. Your carrier sets the final percentage, and the inspection costs $75-$150. We install products that meet the requirements and document the approval numbers you need. The 365-Day Done Right Promise covers any installation defect that would cause you to fail re-inspection. Call (863) 509-1135 to discuss how your specific policy and opening configuration would apply.
Contact Sightline Windows & Doors for Window Replacement in South Bay

Call (863) 509-1135 to schedule your free measured survey. We’ll arrive on time, inspect your openings, test your existing frames, and give you a written price before any work starts. The quote you keep is the same document our crew works from. Every installation leaves a documented photo record. Every job carries the 365-Day Done Right Promise written into the Haven Standard. Sonia Raman and the team at Sightline Windows & Doors Clewiston are ready to measure your South Bay home.
Written by Sonia Raman, Owner at Sightline Windows & Doors, serving South Bay since 2012 under the Haven Standard.
Six Reasons Homeowners Choose Sightline Windows & Doors Clewiston

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.
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