Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Windows & Doors Services in Lake Mary, FL
If you live in Lake Mary and your windows fog between the panes or your patio door sticks every July, you already know the frustration. We install, replace, and service windows and doors throughout Lake Mary, and we know this city’s housing stock well enough to tell you what a job will involve before we step through the door. Call (954) 280-4413 and you’ll get a live person, not a voicemail tree. Estimates are free, written line-item, and good for the work we actually quote.
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.
Why Lake Mary Homeowners Choose TruePane Windows & Doors
Homeowners in Lake Mary tend to ask harder questions than most, and we’re glad for it. They’ve lived in their houses long enough to know what a fogged seal or a warped threshold means. They also know the difference between a crew that measures twice and one that guesses once. Dale Kessler founded TruePane on a rule that still hangs in our shop: if the pane is not true, the job is not done. That rule is why we register both manufacturer warranty layers in writing before the truck leaves your driveway, and why every job carries a Done Right Promise. No fine print. No arguing.
We’ve worked on stucco homes in Heathrow with arched transom windows that three other companies refused to quote, and on early-2000s builds in Timacuan where aluminum frames had corroded at the corners from twenty years of humidity. The work holds up because we treat installation as a craft commitment, not a transaction. Our technicians are background-checked and uniformed. They quote manufacturer lines side by side on paper, so you see exactly what you’re buying. And when you call, a live person answers. Every time. That’s been true for years of community service, and it’ll be true in thirty more.
Windows & Doors Services We Offer in Lake Mary
Window Installation
New window installation in Lake Mary means working with openings that are rarely square and often oversized. We measure every opening twice, level the rough sill, and set the unit so the reveal is even and the sash moves without binding. Then we register the warranty and walk you through what’s covered, in writing, before we leave. Learn more about our Window Installation in Lake Mary.

Door Installation
A door that binds in summer or lets water in during an afternoon storm is a Lake Mary problem we see every week. We install hinged entry doors, French doors, and sliding doors with pre-hung frames set plumb and squared, so the jamb stays true through Florida’s seasonal swings. Thresholds get sealed and flashed to stop the water intrusion that aging stucco homes are prone to. Learn more about our Door Installation in Lake Mary.

Window Replacement
Most Lake Mary homes built between 1988 and 2005 are due for full replacement, not just glass. We remove the old builder-grade units, address any rot or corrosion at the rough opening, and install impact-rated or energy-efficient replacements sized to your actual frames, not a catalog standard. Learn more about our Window Replacement in Lake Mary.

Impact Windows & Doors
Lake Mary is inland, but Florida Building Code wind-borne debris requirements still apply to every new opening we touch. Impact Windows & Doors in Lake Mary from lines like PGT and CGI give you code compliance and a real barrier against storm debris, without the look of shutters bolted to the wall.

Energy-Efficient Windows
Central Florida’s UV index is among the highest in the continental US, and it’s hard on frames and seals. We install Energy-Efficient Windows in Lake Mary with low-E glazing and insulated frames that cut solar heat gain and hold up longer than the single-pane units most homes here still have.

Sliding & Patio Doors
Sliding glass door tracks in this climate collect dirt, corrode, and eventually bind or leak. We replace worn rollers, re-square the panel, and when replacement is the honest answer, we install Sliding & Patio Doors - Lake Mary that glide with two fingers and seal tight against driving rain.

Glass Railing Systems
For pool decks and second-story balconies, Glass Railing Systems - Lake Mary hold up well in humidity and preserve sight lines. We template, fabricate, and install them to meet Seminole County code, with hardware that doesn’t bleed rust onto the glass after one rainy season.

Custom Windows & Doors
Arched windows, palladian tops, eyebrow transoms. Those shapes are common in Lake Mary’s older luxury subdivisions, and they don’t come off a shelf. We template the existing opening, order custom insulated glass units from manufacturers like Andersen, and handle the wait time honestly from day one.

Neighborhoods We Serve in Lake Mary
Our crews work throughout Lake Mary, and we know the HOA boards and building departments that come with each area:
- Heathrow - two-story great rooms, tall arched transoms, and strict architectural review.
- Timacuan - early-1990s golf community homes with original aluminum frames reaching end of life.
- Chase Groves - mature stucco exteriors and growing demand for impact-rated replacement.
- Magnolia Plantation - newer builds where seal failures are starting to show in dual-pane units.
- Lake Mary Woods - established homes near the city center with older door thresholds and sliding tracks.
Typical scheduling for estimates in Lake Mary is within the week. Repair calls are often sooner.
Why Lake Mary’s Climate & Housing Affect Windows & Doors
Lake Mary’s residential boom peaked in the late 1980s through early 2000s, and it left a dense concentration of upscale HOA communities built with builder-grade aluminum single-pane or early double-pane windows. Those units are now 20 to 35 years old and failing in unison. You see it on a quiet afternoon drive through Heathrow or Timacuan: fogged glass, corroded frame corners, arched windows with sealant failing around the radius. The original single-pane glass performs far below current Florida Energy Code minimums, and the aluminum frames lose their thermal breaks in Central Florida’s humidity.
Then there’s the dual-permit reality. Every replacement job in Lake Mary must clear both Seminole County building permits and the individual HOA’s Architectural Review Committee. That’s not a formality. In Heathrow and similar early-1990s communities, two-story great rooms with tall arched transoms were standard builder features, and those non-standard shapes can trigger a months-long wait for templated custom impact-rated units while the HOA holds the permit application. We’ve walked that path enough times to know when to start the ARC paperwork early, which documents the board wants, and how to keep the job from stalling.
Pricing for Windows & Doors in Lake Mary
Honest numbers matter more than a low opening bid. Here’s what work in Lake Mary typically runs:
- Single impact-rated window replacement: $850-$1,600 installed, depending on size and opening condition.
- Standard sliding glass door replacement: $2,200-$4,500, including threshold and flashing work.
- Entry door with side transoms: $1,800-$3,800 for a pre-hung, impact-rated unit.
- Custom arched or palladian window in an existing opening: $1,500-$3,400 per unit, driven by templating and lead time.
- Full-home window replacement (typical 2,000-2,800 sq ft Lake Mary home): $14,000-$32,000, depending on impact rating and geometry.
Seniors and veterans get a permanent 5% discount. We also offer a free written repair estimate, and a maintenance check for doors and windows that need adjustment before hurricane season. Call (954) 280-4413 for a written line-item quote. No surprises on the bill, because we quote the job we’re going to do.
Service Area - Cities Near Lake Mary
We also serve Longwood, Sanford, Altamonte Springs, and Winter Springs, with the same crews, the same written warranties, and the same live-answer phone line. If you’re on the edge of Lake Mary and need work scheduled, call and we’ll tell you who’s in your area this week.
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 About Windows & Doors in Lake Mary
Window replacement in Lake Mary typically runs $850-$1,600 per impact-rated window, and a full-home job on a 2,000-2,800 square foot house usually lands between $14,000 and $32,000. The wide range is driven by opening size, impact rating, and whether the existing frames are square enough to receive a standard unit or need custom templating. Call (954) 280-4413 for an exact quote, written line-item, with no change orders later.
Yes, in nearly every Lake Mary subdivision, including Heathrow, Timacuan, and Chase Groves, your HOA’s Architectural Review Committee must approve window and door replacements before work begins, and Seminole County permits are required on top of that. We handle the paperwork side of this, but we tell homeowners up front that ARC approval often takes longer than the actual installation. The earlier you start the ARC application, the sooner your windows arrive.
If the seal has failed and moisture is between the panes, the insulated glass unit (IGU) is done, and replacement of the IGU or the full sash is the honest fix. We can often replace just the glass on standard rectangular units. On older architectural shapes like the arched transoms common in Heathrow, expect a longer lead time because the IGU must be templated and custom-fabricated. Call us and we’ll tell you which path applies to your window.
Central Florida’s humidity and afternoon storms push water into aging aluminum thresholds and corrode track hardware on sliding glass doors, which causes binding and leaks. We can re-square and re-roller many doors in a single visit, but when the frame has corroded through, replacement is the choice that won’t fail again in two years. We always tell you which is which before we quote.
No, unless we uncover rot or structural damage hidden behind the existing frame, and even then, we stop work, show you what we found, and get your written approval before adding a dollar. That’s the square deal: upfront pricing, no surprises on the bill. Call (954) 280-4413 to schedule your free estimate.
Written by Dale Kessler, Owner at TruePane Windows & Doors. Serving Lake Mary with honest measurements, registered warranties, and a Done Right Promise since the day we opened.
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.
Other TruePane Windows & Doors Services
What Neighbors Say About TruePane Windows & Doors
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Lake Mary Customers Say
"Whole-house window replacement at 71 years old is not something you want to do twice. Dale walked the house himself for the quote. Crew was the same three men all four days, and the foreman knew every window by room."
- Pat and Ray L."Eleven windows replaced in two days. The crew chief, Marcus, showed me the level on every single frame before they caulked it. My wife noticed the street noise was gone before I did."
- Ronald P."Impact windows on the whole house. They handled the permit, the inspection, and gave me a folder with every approval number for the insurance company. My windstorm premium dropped enough to notice."
- Bill T.



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