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Therma-Tru Windows & Doors in West Palm Beach, FL | Sightline Windows & Doors West Palm Beach
Therma-Tru entry and patio door service in West Palm Beach typically runs $280-$680 for repairs and $1,800-$4,200 for full replacements, depending on impact rating and historic district compliance requirements. We are an independent Therma-Tru service provider, not a factory-authorized dealer, and we’ve spent years working on the brand’s fiberglass and steel entry systems and patio doors across Palm Beach County. Our crews know the difference between a Therma-Tru that can be repaired and one that’s been compromised by salt air, impact requirements, or historic district rules. Call (561) 354-3861 to schedule your free estimate.
Why West Palm Beach Residents Choose Us for Therma-Tru Service
We’ve worked on Therma-Tru doors in West Palm Beach since 2012, from the Mediterranean Revival homes along Flagler Drive to the mid-century CBS tracts off Okeechobee Boulevard. Sonia Raman, who leads our operation, learned frame systems and glazing tolerances at Los Angeles Trade-Technical College before spending the better part of fifteen years measuring and installing in South Florida. She catches clearance and rough-opening problems before they become change orders, and writes quotes that say exactly what is included and exactly what is not.
Our Therma-Tru sales & service approach is straightforward: we use OEM Therma-Tru replacement parts for lock sets, hinges, and weatherstrip whenever they’re available, and high-quality aftermarket marine-grade stainless hardware when OEM isn’t rated for Florida’s salt air. Every job starts with a measured survey you keep, and the written quote cannot differ from that document. That’s Haven Clause 1. Our technicians are background-checked, uniformed, and identified by license number before arrival. Every completed job leaves a documented photo record and carries our 365-Day Done Right Promise.
We also offer a free second opinion on any written estimate. Bring us a competitor’s quote and we’ll review it at no charge. If the number isn’t on the page, it isn’t in the price.
Common Therma-Tru Windows & Doors Problems We Solve in West Palm Beach

- Corroded bottom rails and hinge-side stiles. Salt-laden air from the Intracoastal Waterway attacks older Therma-Tru steel and fiberglass doors even when they’re under a porch. The corrosion isn’t always visible until the paint bubbles or the hinge pulls out of the stile. We see this regularly in homes within a mile of the waterway, where marine-grade finishes weren’t specified originally.
- Seized multi-point locks and handle sets. Original Therma-Tru hardware from 1990s-2000s installations loses alignment after years of humidity cycling in West Palm Beach. The door stops latching tight. Sometimes we can rebuild the mechanism with OEM parts; sometimes the frame has shifted enough that the whole assembly needs repositioning.
- Surface cracks and clear-coat failure on fiberglass slabs. West-facing Therma-Tru fiberglass doors in West Palm Beach take brutal afternoon sun. The clear coat degrades, the gel coat cracks, and the door starts looking chalky. If caught early, refinishing is possible. Left too long, the fiberglass substrate itself can degrade.
- Wind-driven rain intrusion through sidelite and transom assemblies. Summer storms in West Palm Beach push water through improperly flashed Therma-Tru entry systems. The rot often hides behind interior trim for years. We document the damage with photos before touching anything, then specify proper flashing and sealants that meet current Florida Building Code.
- Impact-rating gaps in retrofits. Homeowners replace a failed Therma-Tru door with a non-impact-rated unit, not realizing West Palm Beach requires Florida Product Approval for impact resistance. We verify the rating before ordering and pull permits when required.
Before
AfterTherma-Tru Service in West Palm Beach: What Local Conditions Mean for Your Equipment
West Palm Beach sits just outside the High-Velocity Hurricane Zone that covers Miami-Dade and Broward counties, so Therma-Tru impact-rated entry doors here need Florida Product Approvals rather than Miami-Dade NOAs. That’s the first compliance layer. The second is that the city’s dense concentration of historic districts means many of those same Impact Windows & Doors - West Palm Beach jobs must also clear the Historic Preservation Board, which restricts frame profiles, muntin patterns, and finishes on 1920s-1940s Mediterranean Revival homes. Contractors moving north from Miami-Dade sometimes over-specify NOA products unnecessarily. Contractors moving south from Palm Beach County into Broward sometimes pull Miami-Dade NOA products assuming they’re valid everywhere. The county line marking the HVHZ boundary is one of the most commonly misunderstood permit triggers in the regional window trade, and we’ve seen it cost West Palm Beach homeowners weeks in permit rejection.
In the Flamingo Park historic district, our crew replaced a failing 1990s Therma-Tru steel entry door on a 1925 Mediterranean Revival home that had a badly corroded bottom rail and a seized multi-point lock. We sourced a Therma-Tru Smooth-Star fiberglass door with a compatible stile profile and factory-applied marine-grade finish that met both the Historic Preservation Board’s visual guidelines and Florida Product Approval for impact. The new door sealed tight, passed inspection, and the homeowner kept the period-appropriate look without constant repainting.
Therma-Tru Models & Products We Service in West Palm Beach

We service the full range of Therma-Tru entry and patio door systems found in West Palm Beach homes: Smooth-Star fiberglass entry doors, Classic-Craft fiberglass and steel entry doors, the Fiber-Classic collection, and Pulse series impact-rated patio doors where properly rated for the opening. Our West Palm Beach service area inventory includes common OEM hinges, multi-point lock sets, and compression weatherstrip for the most frequently installed profiles. For hardware that Therma-Tru doesn’t rate for marine exposure, we stock aftermarket 316 stainless hinges and fasteners that outlast standard zinc-plated components in salt air. We repair Therma-Tru doors when the slab and frame are structurally sound. We recommend full replacement when the bottom rail or hinge stile is rotted, or when the opening must be upgraded to meet current Florida Product Approval impact requirements.
Therma-Tru Service Pricing in West Palm Beach
These are the price ranges we see on Therma-Tru jobs across West Palm Beach:
- Multi-point lock rebuild or replacement: $280-$450
- Hinge replacement and realignment (per door): $180-$320
- Weatherstrip and sweep replacement: $140-$260
- Fiberglass door slab refinishing (clear coat repair): $380-$620
- Full Therma-Tru entry door replacement, standard fiberglass: $1,800-$3,400
- Full Therma-Tru entry door replacement, impact-rated with Florida Product Approval: $2,800-$4,200
- Historic district compliance documentation and permit assistance: included in replacement scope
What drives the cost for our Window Replacement in West Palm Beach: impact rating requirements, historic district compliance complexity, extent of frame damage from salt corrosion, and whether the opening needs structural reframing. Every estimate includes the measured survey you keep, a written scope with line-item pricing, and our documented photo record. The quote you sign is the invoice you pay. Call (561) 354-3861 for an exact quote on your Therma-Tru door - estimates are free.
Serving West Palm Beach, FL - Our Local Coverage Area

We’re based in the West Palm Beach 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 - Therma-Tru Windows & Doors in West Palm Beach
No. West Palm Beach sits outside the High-Velocity Hurricane Zone, so Florida Product Approval is the correct certification for Therma-Tru impact-rated entry doors here. Miami-Dade NOA products are valid but not required, and specifying them unnecessarily can add cost without benefit. We verify the right approval for your permit before ordering. Call (561) 354-3861 and we’ll confirm what your opening needs.
Yes, but the Historic Preservation Board must approve the panel profile, finish, and hardware style. We’ve installed Therma-Tru Smooth-Star and Classic-Craft doors in both districts by selecting profiles that match period-appropriate stile and rail dimensions. The Florida Product Approval and historic compliance must both be documented before permit issuance. We handle both layers. Call (561) 354-3861 to review your specific requirements.
Salt-laden air in West Palm Beach doesn’t need direct rain to corrode steel. The Intracoastal Waterway and Atlantic shoreline create ambient salt exposure that condenses on cooler metal surfaces, especially bottom rails where water pools and evaporates slowly. Original Therma-Tru steel doors without marine-grade finishes often show this first at the weatherstrip contact point. We assess whether the rust is surface-only or has compromised the stile structure, then specify repair or replacement accordingly.
A properly maintained Therma-Tru fiberglass entry door in West Palm Beach lasts 20-30 years; steel doors in salt air often need attention at 12-18 years. The difference is maintenance schedule and exposure. West-facing doors without overhangs degrade faster. Doors within a mile of the Intracoastal need more frequent hardware inspection. We document condition at every service and tell you exactly what we found, not what we think you want to hear.
Most latch failures are repairable. The cause is usually a shifted frame, worn multi-point lock components, or humidity-swollen jambs - all addressable without replacing the slab. We replace the lock mechanism with OEM or marine-grade aftermarket parts and realign the frame. Full replacement becomes necessary when the hinge stile or bottom rail is rotted, or when the door no longer meets current impact requirements. We’ll show you the difference with photos before you decide. Call (561) 354-3861 for a free assessment.
Service Areas Near West Palm Beach

We work Therma-Tru jobs throughout the West Palm Beach metro and surrounding communities. Our crews are regularly in Therma-Tru service in Westgate, where mid-century homes often need fiberglass entry door upgrades, and Therma-Tru service in Lake Park, with its mix of historic and newer construction. We also cover North Palm Beach, Royal Palm Beach, and Palm Beach proper.
Book Your Therma-Tru Service in West Palm Beach Today
Call (561) 354-3861 to schedule your free estimate. A live person answers, 24/7. We’ll send a uniformed, background-checked technician with license number verified under Haven Clause 3. You’ll receive a measured survey you keep, a written price before any work starts, and a documented photo record when the job is done. The 365-Day Done Right Promise applies to every Therma-Tru repair and replacement we complete in West Palm Beach.
Written by Sonia Raman, Owner at Sightline Windows & Doors West Palm Beach, serving West Palm Beach since 2012.










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