Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Impact Windows Across South Miami
Impact window installation in South Miami runs $800 to $1,500 per window for standard sizes, with full-frame conversions from original jalousie windows typically landing between $1,400 and $2,800 per opening once reframing and waterproofing are factored in. Most jobs are installed in as fast as a single day once your units arrive, though custom fabrication usually runs 4 to 6 weeks. That’s the honest answer. What matters more is who is on the other end of the permit paperwork, because South Miami is not Miami-Dade County, and the distinction costs homeowners real money when contractors get it wrong.
Winslow Windows & Doors has been at this since 2011. Ed Winslow’s name is on the door and on every job we do. When you call (863) 946-5039, a live person answers, 24 hours a day. Not a voicemail loop. Not a call center in another state. A person who knows South Miami’s permit process, its housing stock, and what hides inside a 1950s jalousie frame.
Key Takeaways:
- South Miami requires a City of South Miami permit for every window replacement, even a single unit, separate from Miami-Dade County’s system.
- Full-frame impact window replacement in South Miami runs $1,000-$1,500 per window on average; jalousie conversions run higher due to structural reframing.
- Every product we install carries a Miami-Dade Notice of Acceptance (NOA), not just a Florida statewide approval.
- Florida offers sales-tax exemption, My Safe Florida Home matching grants up to $10,000, and federal energy credits that offset the cost.
- Free estimates. Written line-item quotes. Background-checked, uniformed technicians on every job.
Why Winslow Windows & Doors Is South Miami’s Preferred Impact Windows Company
South Miami is a city of roughly 1940s to 1960s concrete-block-and-stucco homes, most of them still wearing the original aluminum jalousie or single-pane awning windows they left the builder with. That means every third call we take in South Miami is a jalousie-to-impact conversion, a job type that barely exists in most of the country. We know these homes. We know the framing behind the stucco, the corrosion patterns from salt air, and the exact moment a City of South Miami inspector is going to want to see the NOA sticker on the glass.
Our reputation in South Miami comes from doing the unglamorous work correctly. Pulling the right permit. Writing allowances into the contract for rotted framing and failed waterproofing before we open the wall. Documenting design pressure ratings for wind mitigation reports. Homeowners around Sunset Drive, Ludlam Road, and the streets off Red Road consistently tell us the same thing: we told them what the job would cost, and the invoice matched the quote. That’s the whole pitch. It shouldn’t be rare, but in this market it is.
The 36500-Day Done Right Promise backs every installation. If it’s not done right, we make it right. A century-long standard of accountability, in writing, from a company with a published address and license number. No shell companies. No ticket numbers. Ed Winslow’s word is the warranty’s spine.
Our Impact Windows Services in South Miami
Our Impact Windows team handles the full scope of what South Miami’s older housing stock throws at us. Here’s what that looks like in practice.
Full-Frame Impact Window Replacement
This is the standard scope of work in South Miami, not the exception. Original aluminum frames from the 1950s and 60s were never engineered for the design pressures of Miami-Dade’s High Velocity Hurricane Zone, and decades of UV exposure plus wind-driven salt air have done them no favors. A full-frame replacement removes the old window down to the rough opening, lets us inspect and repair the structural jamb, and installs a modern impact unit with a Miami-Dade NOA. The result is a window that actually meets the wind zone your home sits in.

Jalousie-to-Impact Conversion
South Miami has one of the densest concentrations of original jalousie windows in Florida. These crank-out glass slat windows offer zero impact protection, let conditioned air escape year-round, and are technically uninsurable as-is for windstorm coverage with most carriers. Converting them means cutting out the jalousie assembly, reframing the opening to accept a standard impact window, and finishing the interior and exterior to match. We handle the full scope, including the stucco patch and trim.

Wind Mitigation Documentation
Replacing your windows with Miami-Dade NOA-carrying impact units changes your home’s wind mitigation profile, and your insurance carrier wants proof. We document the design pressure rating, the NOA number, and the installation details for every unit we put in, so your wind mitigation report reflects what is actually in the openings. Most homeowners see windstorm-premium credits around 25% on the windstorm portion of their policy after a wind mitigation inspection. The inspection itself runs $75 to $150. We make sure the paperwork says what the glass says.

Impact Window Repair and Service
Not every call is a full replacement. We repair and service impact windows throughout South Miami, from failed seals and fogged glass to rollers, balances, and hardware on windows that are otherwise structurally sound. $40 off any repair over $200, always, no expiration. If you’re unsure whether a window can be saved or needs replacement, we’ll tell you straight. Free second opinion on any written estimate you’ve received from another contractor.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in South Miami
We’re an authorized installer for eight premium brands, and for South Miami’s wind zone we lean most heavily on PGT, CGI, and ES Windows. These manufacturers build to the Miami-Dade protocol (TAS 201/202/203), which exceeds Florida statewide impact standards, and their approval documentation is clean, current, and easy for City of South Miami inspectors to verify. That matters on inspection day. We also stock a deep inventory of local parts for CWS and ECO Window Systems units, which keeps service turnarounds short for South Miami customers who need a roller, balance, or weatherstripping swap instead of a full unit.
Common Impact Windows Problems We See in South Miami Homes
- Permit jurisdiction errors: A contractor pulls a Miami-Dade County permit for a house inside South Miami city limits. The city issues a stop-work order, the homeowner pays re-inspection fees, and the job stalls for weeks. South Miami is an independent municipality with its own building department on Sunset Drive. We pull the City of South Miami permit, every time, even for a single window.
- Impact glass retrofitted into dead frames: Some contractors offer to install impact-rated glass into original 1940s jalousie frames to save money. The frames were never structural enough for impact loads, and after 60 years of corrosion they’re actively failing. First storm, the seal lets go and water comes through. South Miami’s jalousie stock makes this the single most common failure mode we see.
- NOA confusion: Homeowners show us a Florida statewide product approval and assume their new window passes South Miami inspection. It doesn’t. The City of South Miami requires a Miami-Dade Notice of Acceptance, which is a separate, more stringent certification. We only install products with current Miami-Dade NOAs.
- Hidden framing damage: Salt air eats aluminum. On a 1950s CBS ranch near Ludlam Road, our crew opened the wall for a full-frame replacement and found the original jalousie jamb so corroded it had lost all structural bearing. That’s not a surprise if you’ve done this work in South Miami long enough to expect it. It’s the reason our contracts carry written allowances for reframing and waterproofing.
Pricing for Impact Windows in South Miami, FL
A single impact window in South Miami typically runs $900 to $1,800 installed for a single-hung unit in a standard opening. Large or custom openings, including picture windows and geometric shapes, run $2,500 to $5,000. Whole-home packages on a three-bedroom CBS ranch generally land between $8,000 and $25,000, depending on opening count and frame material. Full-frame jalousie conversions add $500 to $900 per opening over a straight retrofit because of the reframing, stucco work, and interior trim. What moves the number in South Miami specifically: your home’s wind zone (everything inside South Miami is HVHZ, so there’s no cheap zone to hide in), floor height, opening size, and what we find when the old frame comes out. We’ll measure in person and hand you a written line-item quote. Call (863) 946-5039 to schedule it. Free.
What Impact Windows Costs in South Miami
Standard impact windows in South Miami run $800 to $1,500 per window installed. Impact single-hung units run $900 to $1,800. Large or custom openings run $2,500 to $5,000, and whole-home packages run $8,000 to $25,000 or more depending on how many openings you’re converting. In South Miami, the biggest price driver beyond opening count is the age of your framing. Pre-1970 homes here carry a higher likelihood that full-frame work is required, which is the right call structurally but costs more than a simple retrofit. Floor height changes design pressure requirements, and design pressure changes which glass package the opening needs. Frame material matters too: vinyl costs less, aluminum holds up well in salt air, and thermally broken aluminum splits the difference on both cost and performance. We’ll tell you what your house actually needs, not what’s easiest to sell. Free in-home measure and written quote, no obligation.
Florida Pays You Back
The incentives for impact windows stack, and in South Miami’s wind zone they stack higher than inland. The My Safe Florida Home program offers matching grants up to $10,000 for qualifying wind-mitigation upgrades, and impact-rated windows and doors are the core of that. Florida also exempts impact-resistant windows and doors from sales tax, which saves you 7% right off the invoice. On the federal side, the 25C energy credit offers 30% of product cost, up to $600 per year, on qualifying energy-efficient units. And once installed, most South Miami homeowners see windstorm-premium credits averaging around 25% on the windstorm portion of their policy after a wind mitigation inspection ($75 to $150). Programs and carriers set the final numbers, so no guarantees, but the money is real for people who do the paperwork. We document every NOA and every design pressure rating specifically so your wind mitigation report is airtight.
One comparison worth making: impact windows versus hurricane shutters. Shutters are cheaper upfront, but they only work if someone is home to deploy them, and they don’t lower your cooling bill, block UV, or improve your home’s resale value in a market where buyers expect permanent protection. Impact windows work every day, not just during a watch. We don’t sell or install shutters, and we won’t pretend they’re the right fit for most South Miami homes that need a permanent upgrade.
We Also Serve Cities Near South Miami
Winslow Windows & Doors serves South Miami and the surrounding cities, including Miami, Hialeah, Miami Beach, and Coral Gables. If you’re a few blocks outside South Miami’s municipal line, the permit jurisdiction changes and we handle that too. One call covers the whole metro. (863) 946-5039.
Serving South Miami, FL - Our Local Coverage Area
We’re based in the South Miami 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 - Impact Windows in South Miami
Because the NOA certifies the product, not the installation. South Miami is an independent municipality with its own building department on Sunset Drive, and it requires its own permit for any window or door replacement, even a single unit. The product has to pass Miami-Dade’s testing protocol to carry the NOA, and then the City of South Miami separately verifies that the installation meets its structural and wind load requirements for your specific home. A contractor who skips the city permit gets a stop-work order, and you get re-inspection fees. We pull the City of South Miami permit on every job. Call (863) 946-5039 for an exact quote. Free estimates.
A Miami-Dade NOA is a Notice of Acceptance, a product certification issued after a window or door passes the county’s testing protocol under TAS 201/202/203, which is the most stringent residential fenestration certification in the United States. South Miami sits entirely inside the High Velocity Hurricane Zone (HVHZ), so every window and door installed here must carry one. A Florida statewide approval is not enough. A product with only a Florida approval fails City of South Miami inspection, and you’ll be replacing it. We only install products with current NOAs. Call (863) 946-5039 to schedule a free measure.
No, and any contractor who says yes is setting you up for a failed inspection and a leaking window. Original jalousie frames were never designed for impact loads, and after 60 years of South Miami salt air, most have lost structural integrity at the jamb. Retrofit impact glass in a dead frame fails at the seal in the first storm and water comes through. The correct fix is a full-frame conversion: remove the jalousie assembly, reframe the opening, and install a proper impact window with a Miami-Dade NOA. That’s the job we do most in South Miami. Call (863) 946-5039 and we’ll walk your house and tell you exactly what each opening needs. Free estimate.
We inspect first, write allowances into the contract, and price any surprise in writing before we touch it. On a 1950s CBS ranch near Ludlam Road, our crew opened the wall for a full-frame replacement and found the original jalousie jamb so corroded by salt air that it had lost all structural bearing. That’s predictable in South Miami if you’ve done the work, so our contracts carry line-item allowances for reframing, waterproofing, and any code upgrades the City of South Miami permit triggers. No verbal change orders. No invoice surprises. You approve the number before the work happens. Call (863) 946-5039 for an exact quote. Estimates are free.
Yes, and in South Miami’s climate the difference is measurable. Original jalousie windows leak conditioned air constantly, even when closed, because the glass slats never seat tightly. Modern impact units from PGT, CGI, or ES Windows use laminated glass with Low-E coatings that block solar heat gain and UV, which matters when your AC runs eleven months a year. The federal 25C energy credit offers 30% of product cost on qualifying units, and the windstorm premium credit after your wind mitigation inspection is a separate check your insurance carrier writes. The windows pay you back three ways. Call (863) 946-5039 to schedule a free in-home measure and written quote.
Call Winslow Windows & Doors for Impact Windows in South Miami
Ed Winslow’s name is on the door, and on every job we do. We’ve been locally owned and owner-operated since 2011, with a published address, a license number, and a live person answering the phone 24 hours a day. Background-checked, uniformed technicians on every job. Upfront pricing with no change orders you didn’t approve in writing. A free second opinion on any written estimate, $40 off any repair over $200, no trip charge inside the county, and a permanent 10% discount for seniors and veterans. The one down the road.
Call (863) 946-5039 today to schedule your free in-home estimate for impact windows in South Miami.
Written by Ed Winslow, Owner at Winslow Windows & Doors, serving South Miami since 2011.
Six Reasons Homeowners Choose Winslow Windows & Doors
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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