Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Therma-Tru Windows & Doors in West Palm Beach, FL | Sightline Windows & Doors North Palm Beach
We provide independent Therma-Tru service across West Palm Beach, handling everything from multi-point lock adjustments on Fiber-Classic entries to full-frame Classic-Craft replacements in historic districts. The one thing that makes our Therma-Tru work here different: we know West Palm Beach sits outside Miami-Dade’s High-Velocity Hurricane Zone, so your replacement door needs Florida Product Approval, not a Miami-Dade NOA - a distinction that stops permits cold when contractors get it wrong. Call (561) 475-1246 to schedule your free estimate.
Why West Palm Beach Residents Choose Us for Therma-Tru Service
We’ve worked Therma-Tru door systems throughout Palm Beach County long enough to know which failures are fixable and which mean replacement. Sonia Raman, our owner, grew up in Miami and learned the trade at Miami Lakes Educational Center’s building construction technology program before she ever touched a finished frame on a job site. She measures every opening herself on the first visit because she’s seen what a quarter-inch assumption costs in lead time and money - especially on West Palm Beach’s pre-1992 CBS homes where the rough opening was never built for a modern impact-rated unit.
Our Therma-Tru sales & service draws from eight manufacturer lines, but we don’t push what we stock. We specify by what the opening requires. Every job starts with a measured survey you keep, and the written quote cannot differ from that document - Haven Clause 1. Our technicians are background-checked, uniformed, and identified by license number before arrival. The 365-Day Done Right Promise is stamped on every job, not offered as a courtesy.
Common Therma-Tru Windows & Doors Problems We Solve in West Palm Beach

- Salt-air corrosion of aluminum sills and multi-point lock hardware. The Intracoastal Waterway runs West Palm Beach’s eastern edge, and salt haze extends several blocks inland. We’ve replaced pitted Therma-Tru sills and binding lock sets on Fiber-Classic entries near Flagler Drive that were only five years old - stainless hardware and marine-rated sweeps are the fix, not more aluminum.
- Weatherstripping and door-bottom sweep breakdown. UV and salt degrade the seal on Therma-Tru fiberglass entries until it hardens and shrinks. During August through October, wind-driven rain pushes straight past a compromised threshold. We stock OEM Therma-Tru sweeps and upgrade to salt-rated alternatives on coastal installs.
- Impact-glass seal failure in laminated glazing. Years of thermal cycling in West Palm Beach’s heat and humidity desiccate the spacer between panes. The glass fogs. On Therma-Tru doors with impact-glazed sidelites, we replace the glazing cassette with OEM parts when available, or source a matched aftermarket unit that preserves the Florida Product Approval.
- Water infiltration at unflashed rough openings in pre-1992 CBS homes. Original hollow-core door openings across the South End and northwest quadrants often lack sill pans or proper head flashing. A correctly hung Therma-Tru unit still leaks until the opening is rebuilt. We document the condition with photos before quoting the correction.
- Multi-point lock misalignment after frame settlement. West Palm Beach’s sandy soils and seasonal moisture shifts cause subtle frame racking. The adjustable sills on Therma-Tru Benchmark Plus and Smooth-Star systems let us correct the fit without pulling the frame - if we catch it before the lock stile wears.
Before
AfterTherma-Tru Service in West Palm Beach: What Local Conditions Mean for Your Equipment
West Palm Beach falls in Palm Beach County’s high-wind zone - design wind speeds roughly 140-150 mph depending on proximity to the coast - but sits outside Miami-Dade and Broward’s High-Velocity Hurricane Zone. That means Impact Windows & Doors - West Palm Beach must carry Florida Product Approval, not Miami-Dade NOA. We routinely see contractors and homeowners trip on that distinction, assuming South Florida is one uniform market. Your Therma-Tru impact door and sidelite units won’t pass West Palm Beach permit review with the wrong documentation.
The city also holds a large inventory of pre-1992 housing in neighborhoods like Northwood, El Cid, and the South End still fitted with jalousie louvers and single-pane aluminum sliders that need our Window Replacement in West Palm Beach. Florida’s property insurance crisis makes replacing them with impact-rated units both a code mandate and a financial calculation, with annual premium savings often recovering the investment within a few years. On a 1930s Mediterranean Revival home in El Cid, our crew replaced a rotted original wood entry with a Therma-Tru Classic-Craft fiberglass door and matching sidelites after the Historic Preservation Board approved a divided-lite profile and impact-glazed glass package. The old rough opening had no sill pan, so we rebuilt the threshold flashing and tiled sill before setting the new frame, then upgraded to a Therma-Tru multi-point lock with a stainless bottom sweep rated for salt exposure. The homeowner passed final inspection with both preservation and building sign-offs and is now shopping the premium reduction from the new Florida Product Approval documentation.
If the opening isn’t right, the window isn’t right - that’s where we start.
Therma-Tru Models & Products We Service in West Palm Beach

We work on the full Therma-Tru fiberglass entry door range: Classic-Craft in smooth and oak-grain finishes; Fiber-Classic series entries and patio doors; Smooth-Star slabs and complete door systems; and Benchmark and Benchmark Plus fiberglass entries. Our stock includes OEM Therma-Tru replacement hardware, adjustable sills, bottom sweeps, and glazing cassettes for common configurations. When a door is decades old and OEM parts are discontinued, we source quality aftermarket equivalents - but we will not install generic multi-point gear that won’t align with the original mortise. If the fiberglass slab and frame are sound, hardware and seal replacement is the right call. Once the frame, lock stile, or impact glass has failed, or the opening was never flashed correctly, a full-frame Therma-Tru replacement is more durable and insurable. We carry the West Palm Beach service area with measured survey appointments typically available within a few business days.
Therma-Tru Service Pricing in West Palm Beach
| Service | Price Range |
|---|---|
| Therma-Tru multi-point lock adjustment or hardware replacement | $180 - $340 |
| Weatherstripping and sweep replacement (entry door) | $220 - $420 |
| Impact-glazed sidelite or doorlite cassette replacement | $580 - $1,200 |
| Full-frame Therma-Tru entry door replacement (standard opening) | $2,800 - $5,500 |
| Historic district full-frame with custom divided-lite impact glazing | $4,200 - $7,800 |
| Rough-opening rebuild with sill pan and flashing correction | $1,400 - $3,200 |
What drives cost: the condition of the existing rough opening, whether the door requires Florida Product Approval documentation for permit, and whether we’re matching a historic district aesthetic with impact-rated glazing. Every estimate includes the measured survey you keep, a written scope with line-item pricing, and a documented photo record. The quote and the final invoice are the same document - Haven Clause 1. Call (561) 475-1246 for your exact numbers; 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
Florida Product Approval. West Palm Beach sits outside Miami-Dade and Broward’s High-Velocity Hurricane Zone. Your Therma-Tru impact door must carry Florida Product Approval to pass permit review here. We handle the documentation on every full-frame replacement. Call (561) 475-1246 if you’re unsure what your current door carries.
Salt-air corrosion. The aluminum components in standard Therma-Tru multi-point hardware pit and bind when exposed to Intracoastal salt haze, which extends well past waterfront properties. We replace with stainless hardware and marine-rated sweeps. Call (561) 475-1246 and we’ll inspect the lock stile for wear.
Yes, with a specialty product. The Historic Preservation Board can require divided-lite or wood-frame-style profiles that match 1930s Mediterranean Revival openings, and the Florida Building Code still demands impact-rated glazing. We source Therma-Tru Classic-Craft fiberglass doors with laminated impact glass in period-correct configurations, then secure dual sign-off from preservation staff and the building department before pulling the permit. Call (561) 475-1246 to review your property’s designation.
A properly specified Therma-Tru fiberglass entry with impact-rated glazing and stainless hardware exceeds the 140-150 mph design wind speeds for West Palm Beach’s zone. Fiberglass doesn’t rot like wood or dent like steel, and the slab weight is irrelevant to wind-load performance - the frame attachment and glazing rating matter. We verify both on every install. Call (561) 475-1246 for a free assessment of your current door’s rating.
Rarely without correction. Those original openings often lack sill pans, head flashing, or the correct rough-opening dimensions for a modern pre-hung Therma-Tru unit. We document the condition, quote the opening rebuild separately, and won’t set a door into a cavity that will leak. The measured survey shows you exactly what we found. Call (561) 475-1246 to schedule.
Service Areas Near West Palm Beach

We run Therma-Tru service calls across the immediate Palm Beach County corridor. Our regular routes include Therma-Tru service in North Palm Beach, Palm Beach Gardens, Jupiter, Westgate, and Therma-Tru service in Lake Park. If you’re between these points, we likely already have a measured survey file from a neighboring property.
Book Your Therma-Tru Service in West Palm Beach Today
Call (561) 475-1246 to schedule your free estimate. A live person answers, 24/7. We’ll send Sonia Raman or a verified crew member with license number in hand, measured survey ready, and a written price before any work starts. The 365-Day Done Right Promise applies to every Therma-Tru job we touch in West Palm Beach.
Written by Sonia Raman, Owner at Sightline Windows & Doors North Palm Beach, serving West Palm Beach since 2012.










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