Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across Lake Mary
Window replacement in Lake Mary runs $750-$1,450 per opening for a standard vinyl insert and $1,300-$2,600 per opening for a full-frame replacement in a concrete block stucco home, including permit and HOA documentation. Most jobs take one to two days once the architectural review letter clears. Call (754) 238-2201 and a live person answers, day or night. We know the HOA process in Heathrow, Magnolia Plantation, and Timacuan better than most shops because we have pulled permits in all three.
TruePane has served Lake Mary homeowners long enough to know that the real job starts before the first window is ordered. It starts with a piece of paper from the architectural control committee. Get that wrong and you’re eating restock fees on two dozen windows in the wrong bronze tone. We get it right.
Why TruePane Windows & Doors Is Lake Mary’s Preferred Window Replacement Company
We are a second-generation glazier company, founded by Dale Kessler, and we work the way a local tradesperson should. Background-checked, uniformed technicians measure every opening twice. We quote manufacturer lines side by side on paper so you see exactly what you are buying. We register both warranty layers in writing before the truck leaves your driveway.
Lake Mary homeowners deal with us differently than they might with a franchise outfit. They ask about the Arctic double-hung on their 1994-era home in Heathrow. They ask whether the seal fog between the panes means the argon is gone. It does, by the way, every time. And then they ask the question that actually matters: will the HOA sign off on the frame color. We answer that one first.
Every job carries the Done Right Promise. If it is not done right, we make it right. No arguing, no paperwork fight, no fine print. And a live person answers the phone 24 hours a day. Not a voicemail tree. Not a callback form. A person.
Our Window Replacement Services in Lake Mary
We handle four types of Window Replacement work in Lake Mary. Each one starts with the same step: knowing what the house will allow, what the HOA will approve, and what the wind load actually demands.
Full Frame Replacement
Most Lake Mary homes are concrete block stucco construction from the late 1980s through the 2000s. That means wide stucco returns around every opening. A full-frame replacement pulls the old frame out completely and re-flashes the rough opening correctly. Skip the flashing tape and moisture gets behind the cladding, where it rots quietly for years. We re-flash every time. A typical full-frame replacement in Lake Mary runs $1,300-$2,600 per window, depending on size and product line.

Insert Window Replacement
When the existing frame is still square and sound, an insert fits a new window inside it. This is the lower-cost option and works well for the original builder-grade windows throughout Lake Mary’s planned communities. Inserts run $750-$1,450 per opening. What you give up with an insert is the chance to inspect and correct the flashing behind the original frame. For 20 to 35 year old stucco openings, we often recommend pulling at least one frame to check what is behind it before committing to inserts across the whole house.

Storm Window Replacement
Lake Mary sits inland, outside the coastal High-Velocity Hurricane Zone. But Florida Building Code wind-load requirements still apply, and the I-4 corridor gets serious inland thunderstorm winds. Storm-rated and wind-compliant glazing is a standard part of the conversation here, not an upsell. We quote impact-rated lines like PGT and CGI side by side with standard wind-compliant vinyl so you can see the cost difference on paper before you choose.

Energy-Efficient Upgrade
Central Florida UV exposure and year-round humidity destroy insulated glass unit seals faster than manufacturer ratings suggest. Original aluminum-frame or early vinyl windows across Lake Mary are now 20-35 years old and failing. Low-E coatings and argon-filled double-pane units make a measurable difference on Duke Energy bills, particularly on east and west elevations. An energy-efficient upgrade in Lake Mary typically runs $900-$1,700 per opening. We register both warranty layers in writing before we leave.

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 Lake Mary
We are an authorized installer for more than a dozen manufacturer lines, including, PGT, and CGI. For Lake Mary homeowners, the brands that come up most often are PGT and CGI for impact-rated work, and Ply Gem for restoration-grade vinyl. We quote manufacturer lines side by side on paper. You see the difference in glass package, frame construction, and warranty duration before you spend a dollar.
Common Window Replacement Problems We See in Lake Mary Homes
- HOA rejection after ordering. Crews order replacement windows before getting written architectural review board approval, then eat restock fees or lose the job when the ACC rejects the frame color. In Heathrow, Magnolia Plantation, and Timacuan, the approval letter is step one. Before design selection, before permit, before anything.
- Moisture intrusion behind stucco. Retrofitting new windows into 20-35-year-old concrete block stucco openings without proper flashing tape lets water behind the cladding. Rot develops out of sight. By the time you see a stain, the damage is done.
- Non-compliant glazing. Installing non-impact-rated glass in a wind-load zone that still sees severe I-4 corridor thunderstorm winds. A cheap quote leaves out the documentation that matters to your insurer later.
- Seal failure in original equipment. Fog between the panes means the argon is gone and the insulating value is gone with it. Original aluminum frames from the 1990s oxidize and transfer heat directly into the house. This is the most common failure we see across Lake Mary’s planned communities.
Pricing for Window Replacement in Lake Mary, FL
Insert window replacement in Lake Mary runs $750-$1,450 per opening. Full-frame replacement runs $1,300-$2,600. Energy-efficient upgrades with Low-E and argon fall between $900 and $1,700 per window. Impact-rated lines from PGT or CGI add $400-$900 per opening over standard wind-compliant vinyl.
What moves the number: frame material, glass package, impact rating, and whether the stucco return needs repair or re-flashing. What should not move the number: a salesperson’s mood. We write line-item quotes and the price stays the price. A square deal, in writing.
Call (754) 238-2201 for an exact quote on your Lake Mary home. Estimates are free, and we measure every opening twice.
We Also Serve Cities Near Lake Mary
TruePane crews serve Window Replacement in Lake Mary and the surrounding Seminole County communities, including Longwood, Sanford, Altamonte Springs, and Winter Springs. The HOA approval step that defines Lake Mary work is largely absent in Sanford and Longwood, which changes the process but not the standard. We bring the same flashing discipline and warranty registration to every job in every city. Call (754) 238-2201 and we’ll schedule a free estimate wherever you are in the area.
Serving Lake Mary, FL - Our Local Coverage Area
We’re based in the Lake Mary 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 Lake Mary
Yes, in Heathrow, Magnolia Plantation, Timacuan, and most other gated Lake Mary communities, you need written approval from the architectural control committee before any window replacement work can begin. Many ACCs in Lake Mary lock you to the original builder-specified frame color, commonly bronze anodized aluminum or a specific off-white vinyl. Experienced crews treat the HOA approval letter as step one, before design selection, before permit, before product ordering. Homeowners who order first and ask later routinely eat restock fees or lose the job entirely. Call (754) 238-2201 and we will tell you exactly what your specific ACC requires before you spend a dollar.
Replacement windows in Lake Mary must meet Florida Building Code wind-load requirements for inland Seminole County, which typically means design pressure ratings of at least DP 50 for most openings on a standard single-story or two-story CBS home, with higher ratings for larger glazed areas or corner zones. Lake Mary sits outside the coastal High-Velocity Hurricane Zone, so impact-rated glazing is not a blanket code requirement, but the I-4 corridor regularly sees severe inland thunderstorm winds that make wind-compliant or impact-rated glazing a sensible standard. A compliant quote includes the stamped product approval documents and the design pressure calculation. A cheap quote leaves those out. Call (754) 238-2201 and we will show you the paperwork.
The key insurance question in Lake Mary is proving that your windows carry the proper wind-load rating and were installed under permit with a passed inspection. Insurers across Florida, including Seminole County, have been tightening underwriting requirements since the 2022 carrier withdrawals. Homeowners who keep the final permit inspection record and manufacturer product approval documents can document compliance, which matters for both coverage and claims. The homeowner who loses the permit paperwork is just a homeowner with expensive windows and no proof. We register both warranty layers in writing and keep your job file clean. Call (754) 238-2201 for the exact compliance path for your home before you order.
Original aluminum-frame windows in Lake Mary fail because they were builder-grade units installed during the planned community boom from roughly 1988 to 2010, and they were never designed for Central Florida’s UV load and humidity. Aluminum is highly conductive, so the frames transfer outdoor heat directly indoors and sweat in the humidity, while the constant UV degrades the glazing seals until the argon leaks out and the panes fog. Most of these units are now 20-35 years old and at the end of their rated service life. Once the seal fails, the insulating value is gone. The fix is a full-frame or insert replacement with a modern sealed unit and a frame material that does not conduct heat. Call (754) 238-2201 for an honest assessment of what you have now.
Yes, a permit is required for window replacement in Lake Mary, and in HOA-governed communities you cannot even pull the permit until the architectural review board issues its written approval. The city’s building inspection for window replacement is focused on the structural opening: proper fastening, the right anchors, and the manufacturer’s product approval documents showing wind-load compliance for the specific window model. The inspector verifies that the product installed matches the product on the permit application, so fake or switched product gets caught. We schedule the inspection, meet the inspector, and re-fix anything that fails before calling the job done. Call (754) 238-2201 and we will walk you through the full permit path for your home.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Lake Mary and greater Seminole County with a second-generation glazier’s standard: if the pane is not true, the job is not done.
Call (754) 238-2201 for a free, line-item estimate on window replacement in Lake Mary. We quote manufacturer lines side by side on paper, we pull the permit, we meet the inspector, and we stand behind the work in writing.
Six Reasons Homeowners Choose TruePane 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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