Therma-Tru Windows & Doors in Kendall, FL

Therma-Tru Windows & Doors in Kendall, FL | Sightline Windows & Doors Kendall

Therma-Tru entry and patio door service in Kendall typically runs $280-$650 for repairs and $1,800-$4,200 for full replacement with a Miami-Dade NOA-approved assembly. What makes our work different here: we measure every opening against the county’s approved product list before quoting, because a Florida Product Approval alone will fail inspection in this HVHZ zone. Call (786) 321-3319 to schedule your free estimate - we bring the written price to your door in Kendall.

Call (786) 321-3319

Why Kendall Residents Choose Us for Therma-Tru Service

We’ve been setting and resetting Therma-Tru doors in Kendall since the mid-1990s replacement wave, so we know how a Fiber-Classic slab behaves after fifteen years of southwest sun on a Killian Drive ranch versus a two-story tract home off Kendall Drive. Sonia Raman, our owner, grew up in Miami and trained in building construction technology at Miami Dade College before spending the better part of two decades in the field. Her crew most recently finished a full Impact Windows & Doors in Kendall retrofit on a block of townhomes near Dadeland Mall, and she still insists on a dry-fit before any sealant touches glass - a habit that has saved more than a few jobs from a costly redo.

We are not authorized, endorsed, or partnered with Therma-Tru. We are an independent crew that repairs, adjusts, and replaces these doors daily across Kendall service area, and we stock OEM-compatible sills, hinges, multipoint lock cartridges, and weatherstrip for the turnaround Kendall homeowners need. Every job carries the Haven Standard: written price before work starts, background-checked uniformed techs with license numbers, and a documented photo record you keep. Our Therma-Tru sales & service page details the full product line.

Common Therma-Tru Windows & Doors Problems We Solve in Kendall

• UV-chalked fiberglass slabs on southwest-facing entries. Kendall’s subtropical sun and afternoon thunderstorm cycling break down the gelcoat on Fiber-Classic and Smooth-Star doors after 10-15 years. The surface turns chalky, then hairline cracks appear. We sand, prime, and re-coat when the substrate is sound; we replace the slab when cracking reaches the fiberglass mat.
• Standing water in sill pans after heavy rain. Low-elevation Kendall subdivisions collect runoff that pools against thresholds. The adjustable sill pan and composite threshold rot through, letting water wick into the bottom rail and delaminate the slab. We’ve replaced dozens of these on homes built between 1993 and 1998.
• Seized multipoint locks on double doors with inactive leafs. Humidity-driven expansion of the jamb in CBS construction misaligns shoot bolts and lock gear, especially on second-story entries that see less daily use. The inactive leaf binds first; by the time the active leaf sticks, the mechanism needs full cartridge replacement.
• Wind-driven rain bypassing flattened weatherstrip. Factory-applied kerf weatherstrip and corner pads compress or pull away at the hinge side after years of HVHZ pressure cycling. Rain tracks the header and stains interior drywall - a pattern we see repeatedly in Kendall’s 170+ mph design-pressure zone.
• Delaminated bottom rails on late-1990s units. The first post-Andrew Therma-Tru doors installed across Kendall are now 25-30 years old. Water intrusion through failed perimeter seals has rotted the composite bottom rail on many, and the Miami-Dade NOA numbers on those original units have expired, complicating repair-versus-replace decisions.

Before

After

Therma-Tru Service in Kendall: What Local Conditions Mean for Your Equipment

Kendall sits inside Miami-Dade County’s High Velocity Hurricane Zone, where every replacement window and door must carry a Miami-Dade Notice of Acceptance - the strictest product certification in the U.S., going beyond standard Florida statewide approval. Hurricane Andrew made a near-direct hit on Kendall’s suburban neighborhoods in August 1992, which means a massive share of the local housing stock had its windows and doors replaced in the mid-to-late 1990s. That first generation of post-Andrew impact-rated units is now 25-30 years old and entering a replacement wave that is specific to this southern Miami-Dade corridor.

For Therma-Tru owners in Kendall, this timeline matters in a concrete way. The Fiber-Classic and Smooth-Star doors set in 1996 were built to standards that preceded current HVHZ design-pressure requirements, and their Miami-Dade NOA certifications have lapsed. When we open a rotted frame on a Killian Drive home, we check the existing NOA sticker against the county’s current approved product list. If it doesn’t match, repair is off the table - the inspector will flag it. We then specify a current Therma-Tru assembly with active NOA certification, pull the permit, and schedule the inspection. This is not a formality; we’ve seen contractors source Florida Product Approved doors that lacked Miami-Dade NOA status, and those jobs failed inspection every time. The building department does not grant exceptions.

Therma-Tru Models & Products We Service in Kendall

We work on the full Therma-Tru residential line: Fiber-Classic fiberglass entry doors with their wood-grain aesthetic and composite edge construction; Smooth-Star smooth fiberglass doors painted to match Kendall’s stucco palettes; Classic-Craft premium fiberglass with deeper embossing and thicker slabs; and the Traditions and Profile steel entry lines common on pre-Andrew Kendall homes that still carry original aluminum storm doors.

Our parts approach is straightforward. When the frame is square, dry, and structurally sound, we source OEM Therma-Tru slabs, sills, hinges, and multipoint lock cartridges to preserve the original sightlines and hardware bore spacing. When the sill pan has rotted through or the jamb has absorbed moisture and swelled - typical on 1990s installations in low-elevation Kendall subdivisions - we recommend full replacement with a current Miami-Dade NOA-approved assembly. We stock common sills, thresholds, and weatherstrip profiles locally for same-week turnaround on repairable units.

Therma-Tru Service Pricing in Kendall

FAQs - Therma-Tru Windows & Doors in Kendall

Does a Therma-Tru door sold in Kendall automatically meet Miami-Dade HVHZ code?

No. Therma-Tru manufactures doors for markets across North America, and only specific models carry Miami-Dade Notice of Acceptance certification. A door can be Florida Product Approved and still fail Kendall inspection if it lacks the Miami-Dade NOA number. We verify the NOA sticker against the county’s approved product list before quoting. Call (786) 321-3319 if you need help checking your existing door’s certification.

Why are so many Kendall Therma-Tru doors from the late 1990s failing now?

Those doors were installed in the post-Hurricane Andrew replacement wave and are simply reaching end of service life. The gelcoat chalks, the sill pans rot, and the composite thresholds delaminate after 25-30 years of Kendall’s humidity and UV exposure. Their Miami-Dade NOA certifications have also expired, so replacement is often the only code-compliant path. Call (786) 321-3319 for a free assessment of your door’s condition.

Can you repair a Therma-Tru door with a rotted sill pan, or does it need full replacement?

We can replace the sill pan and bottom rail with OEM-compatible parts when the frame surrounding it is dry and square. If moisture has wicked into the jamb or the slab’s bottom rail is delaminated - common after years of standing water in low-elevation Kendall neighborhoods - full replacement with a current NOA-approved assembly is the only repair that will pass inspection. We document the frame condition with photos and show you before quoting.

How does Kendall’s humidity affect Therma-Tru multipoint locks and hinges?

The CBS block construction common in Kendall absorbs and releases moisture seasonally, which shifts door jambs slightly year-round. Multipoint lock shoot bolts and hinge barrels bind when this expansion misaligns the hardware. We see this most on double doors with inactive leafs that aren’t exercised regularly. A seasonal adjustment prevents seizure; once seized, the cartridge needs replacement. Call (786) 321-3319 to schedule adjustment before the mechanism fails.

Do I need a permit to replace a Therma-Tru entry door in Kendall?

Yes. Miami-Dade Building Department requires a licensed contractor to pull a permit and pass inspection for virtually any window or door swap, and there is no homeowner-pull loophole. Inspectors specifically verify that the installed unit’s NOA number matches the approved product list. We handle permit submission, scheduling, and inspection as part of every replacement quote. Call (786) 321-3319 to start the process.

Service Areas Near Kendall

We service Therma-Tru doors across Kendall and neighboring communities including Therma-Tru service in The Crossings, Therma-Tru service in Pinecrest, Palmetto Estates, Three Lakes, and Glenvar Heights. The same Miami-Dade HVHZ requirements and inspection protocols apply throughout these areas.

Book Your Therma-Tru Service in Kendall Today

Call (786) 321-3319 to schedule your free estimate. We’ll bring the measured survey, the written price, and the current Miami-Dade NOA product list. Measure once, document it, then cut - that’s how we’ve handled 18,000+ openings since 2012, and how we’ll handle yours.

Written by Sonia Raman, Owner at Sightline Windows & Doors Kendall, serving Kendall since 2012.