Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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After
Before
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Before
AfterWhy North Palm Beach Homeowners Choose Therma-Tru Windows & Doors
We provide independent Therma Tru service in North Palm Beach, FL, specializing in fiberglass entry door repair, multipoint lock restoration, and full-frame replacement of Therma-Tru Smooth-Star, Fiber-Classic, and Classic-Craft systems. Our work differs from standard handyman service because we stock Therma-Tru-specific hardware kits, hinge shims, and OEM-spec weatherseals on our North Palm Beach trucks, and we diagnose against the brand’s actual failure patterns - slab warp at the lock rail, rebar-edge swelling, and salt-corroded sills - not generic door symptoms. Call (561) 475-1246 to schedule a measured survey and written estimate.
Therma-Tru fiberglass entry doors are common across North Palm Beach’s 1955-1975 housing stock because they resist the salt-air corrosion that destroys steel slabs on canal-front and Intracoastal-facing homes. The village’s master-planned neighborhoods - Lakeside Park, the Country Club area, and the original General Development Corporation sections - are dense with Therma-Tru installations from the 1990s through 2010s, many now showing the predictable wear of two decades in a marine wind zone. We work on these doors because they are what North Palm Beach homeowners actually own, not because of any manufacturer affiliation. Sightline Windows & Doors North Palm Beach is an independent service provider offering Therma Tru service in West Palm Beach; we are not authorized, endorsed, or affiliated with Therma-Tru Corporation.
Sonia Raman, who leads our North Palm Beach operation, learned the trade at Miami Lakes Educational Center and has worked windows and doors professionally for over two decades. She measures every opening herself on the first visit. “If the opening isn’t right, the window isn’t right - that’s where we start.” That measured survey becomes the written quote, and under Haven Clause 1, the quote and the invoice are the same document.
Why Trust Sightline Windows & Doors North Palm Beach for Your Therma-Tru Windows & Doors?
Our technicians carry Therma-Tru-specific inventory: multipoint lock gearboxes for Benchmark and Pulse-series entry systems, adjustable sills for Fiber-Classic and Smooth-Star door bottoms, hinge shims in the brand’s exact thicknesses, and compression weatherseal kits cut to Therma-Tru jamb profiles. Generic door hardware will not fit Therma-Tru’s prepped slab dimensions or lock bore patterns; we learned that on early jobs and changed our stocking practice. Now we keep the parts that actually work.
We are warranty-safe in our approach. Therma-Tru’s limited warranty covers manufacturing defects in the fiberglass slab and certain components, but it does not cover installation errors, salt-air degradation, or hardware wear. Our repairs preserve warranty coverage on intact slab components by using OEM-spec parts and documented procedures. When we replace a full unit, we specify the correct impact-rated product for North Palm Beach’s high wind-speed design zone and pull permits through the village’s independent building department - a requirement even for like-for-like replacements that many contractors miss.
Every technician is background-checked, uniformed, and identified by license number before arrival - Haven Clause 3, Verified Crews. Every job leaves a documented photo record. Every job carries the 365-Day Done Right Promise. We have installed and serviced 18,000-plus openings since 2012, and every one began with a written price and ended with evidence.
Common Therma-Tru Windows & Doors Problems We Fix in North Palm Beach
- Slab warp at the lock rail on Smooth-Star and Fiber-Classic entry doors. Fiberglass door slabs on south- and east-facing elevations absorb sustained heat through North Palm Beach’s long summer days. The material expands differentially across the slab face, and the lock rail - where the deadbolt and multipoint mechanisms bore through - warps enough to throw hardware alignment. Homeowners notice the deadbolt sticking in summer, then seeming fine in January. The cause is not the lock; it is the slab geometry changing against a fixed frame. We diagnose with a straightedge across the rail and correct by re-shimming the frame to square, replacing distorted hinges with OEM-spec units, and resetting the multipoint strike positions.
- Rebar-reinforced slab edges cracking or swelling at hinge and weatherstrip points. Therma-Tru reinforces its fiberglass slab edges with internal rebar or composite stiffeners for screw retention. In North Palm Beach’s salt-air environment, moisture wicks into the edge construction through repeated wind-driven rain and humidity cycles. The result is visible swelling at hinge mortises or weatherstrip kerfs, which loosens hinge screws and breaks the compression seal. We see this most on canal-front homes in the village’s eastern sections where the Intracoastal produces constant marine exposure. Repair requires edge restoration or slab replacement depending on moisture intrusion depth.
- Multipoint lock gearboxes seizing in Benchmark and Pulse-series entry and French door lines. Therma-Tru’s multipoint systems depend on precise alignment between the gearbox, the shootbolts, and the strike plates. When slab warp or hinge settlement shifts the door even 1/8 inch, the gearbox works against misalignment every cycle. Gears strip. Cams fracture. The homeowner pushes harder, accelerating failure. We stock replacement gearboxes and have the jigs to reset strike positions without enlarging mortises beyond factory spec.
- Door bottoms and adjustable sills pitting or cracking on salt-exposed units. Fiber-Classic and Smooth-Star sills use composite or aluminum components with adjustable caps to manage threshold height. Salt spray from the Intracoastal pits the aluminum, and UV degrades the composite caps. The result is a threshold that no longer seals against wind-driven rain and allows water pooling at the door bottom. In North Palm Beach, this is normal wear - expected, not exceptional - and we replace with OEM-spec sills and caps rated for marine exposure.
- Frame and jamb rot behind Therma-Tru entry door units in original 1955-1975 rough openings. North Palm Beach’s concrete-block ranch homes were built with wood bucks and jambs that have now seen 50-plus years of Florida humidity. A Therma-Tru slab can be sound while the frame behind it is compromised. We pull casing and check with a moisture meter and probe. When the jamb is rotted, we are honest: repair is temporary, and full-frame replacement with a pressure-treated or composite jamb assembly is the correct long-term fix under the Haven Standard.
Before
AfterTherma-Tru Parts & Our Repair-vs-Replace Approach
We use OEM and OEM-spec Therma-Tru hardware because aftermarket door hardware frequently will not fit the brand’s prepped slab dimensions or lock bore patterns. A “universal” multipoint lock from a big-box supplier may look similar but will not align with Therma-Tru’s specific shootbolt spacing or faceplate width. We learned this on the job and stopped experimenting.
Our North Palm Beach trucks carry: Therma-Tru hinge shims in 1/16 and 1/8 inch thicknesses; multipoint gearboxes for Benchmark, Pulse, and Classic-Craft series; adjustable sill caps and full sill assemblies for Smooth-Star and Fiber-Classic; compression weatherseal kits in the brand’s exact kerf dimensions; and deadbolt and handle sets matched to Therma-Tru’s bore patterns.
When the slab is sound and the failure is hardware, sill, or seal, we repair. When the slab has warped beyond re-shimming tolerance, or the edge rebar has corroded and swollen the stile, or the frame behind the unit is rotted, we tell the homeowner: replacement is the better long-term value. No change order, no surprise - Haven Clause 5. Call (561) 475-1246 for a written scope and price before any work starts.
Our Therma-Tru Service Process - Step by Step
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Measured diagnosis. Sonia Raman measures every opening herself on the first visit. We straightedge the slab for warp, probe the jamb with a moisture meter, cycle the multipoint lock to identify gearbox wear, and photograph the sill condition. The customer keeps the measured survey.
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Written scope and price. We specify the exact parts required - OEM-spec hinge kit, multipoint gearbox, sill assembly, or full-frame replacement - and name the price in dollars. The quote and the final invoice are the same document. Haven Clause 1.
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Repair or install with documented evidence. Our verified crew arrives on schedule with the specified parts. We re-shim to square, replace hardware to factory torque spec, or install the new unit with impact-rated fasteners and sealant appropriate to North Palm Beach’s wind-load zone. Every step is photographed.
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Operational test and customer sign-off. We cycle the lock 25 times, check the seal with a dollar-bill drag test at multiple points, and verify the sill drainage path is clear. The customer receives the photo record and the written 365-Day Done Right Promise.
Therma-Tru Products We Service & Install in North Palm Beach
We service and install Therma-Tru Smooth-Star fiberglass entry doors - the paintable, smooth-surface line common in North Palm Beach’s ranch-home renovations. We work on Therma-Tru Fiber-Classic collection doors with their wood-grain texture and composite edge construction. We service Classic-Craft American Style door slabs with their higher relief and traditional panel profiles. We repair and replace Benchmark and Pulse-series patio and entry door systems, including French door configurations with multipoint hardware.
For our Window Installation services in North Palm Beach’s impact-rated zones, we specify Therma-Tru products with the appropriate DP rating and install with Miami-Dade or Florida Building Code compliance documentation, permits pulled through the village building department, and inspections passed.
We Also Service These Brands
Sightline Windows & Doors North Palm Beach is a multi-brand trade shop. We also service and install PGT, CGI, CWS, and ES Windows products, specified by performance tier and price range - not by what is in stock. Eight manufacturer lines total, chosen by what the opening requires.
FAQs - Therma-Tru Windows & Doors Service in North Palm Beach
Is Sightline Windows & Doors North Palm Beach authorized by Therma-Tru?
No. We are an independent Therma-Tru service provider, not authorized or endorsed by Therma-Tru Corporation. We work on Therma-Tru Windows & Doors in Lake Park, FL and throughout North Palm Beach, and we maintain the brand-specific parts and expertise to service them correctly. Our independence means we can also recommend alternative products when a different manufacturer’s specifications better suit the opening.
Do you use genuine Therma-Tru parts on repairs?
We use OEM and OEM-spec parts - hinges, multipoint gearboxes, sills, and weatherseal kits - because aftermarket hardware frequently will not fit Therma-Tru’s prepped slab dimensions or lock bore patterns. On a North Palm Beach home facing the Intracoastal, our crew serviced a Therma-Tru Smooth-Star entry door whose deadbolt would no longer throw after two summers of heat and salt exposure - the slab had warped slightly at the lock rail and the hinges were backing out of the jamb. We replaced the OEM-spec hinges, re-shimmed the frame to square, and installed a new Therma-Tru multipoint gearbox and sill seal; the door latched smoothly and sealed against wind-driven rain without replacing the slab.
Why does my Therma-Tru deadbolt stop lining up every summer?
The fiberglass slab is warping at the lock rail from heat absorption on south- or east-facing elevations. North Palm Beach’s summer sun and the reflected heat off the Intracoastal amplify the effect. The deadbolt does not change; the slab geometry does. We fix this by re-shimming the frame to square and replacing distorted hinges with OEM-spec units - not by enlarging the bore or forcing the lock. Call (561) 475-1246 for a measured diagnosis.
Can my Therma-Tru door be repaired after a hurricane, or does it need to be replaced?
It depends on what failed. If the slab is intact and the issue is hardware misalignment, seal failure, or sill damage, we repair with OEM-spec parts. If the slab has cracked, the rebar edge has corroded and swollen, or the frame behind the unit is compromised, replacement is the correct long-term solution. We document the damage with photos and give a written scope for either path. Call (561) 475-1246 for a free assessment - estimates are free.
Can a Therma-Tru entry door be upgraded for hurricane protection?
Therma-Tru manufactures impact-rated entry door systems, but a standard fiberglass slab cannot be retrofitted to become impact-rated after installation. The impact resistance is in the laminated glass, reinforced frame, and the integrated seal system, not the slab alone. For North Palm Beach’s high wind-speed design zone, full replacement with an impact-rated Therma-Tru unit - properly permitted and inspected by the village building department - is the compliant path. We handle the permit and specification. Call (561) 475-1246 for a written quote on impact-rated replacement.
My Therma-Tru Fiber-Classic door sill is pitting - is that normal here?
Yes. Salt spray from the Intracoastal pits aluminum sill components and degrades composite caps faster than in inland Palm Beach County communities. It is expected wear, not a defect. We replace with OEM-spec sills and caps rated for marine exposure. The repair takes about two hours and restores the threshold seal. Call (561) 475-1246 for an exact quote - estimates are free.
How much does Therma-Tru windows and doors service cost in North Palm Beach?
Multipoint lock gearbox replacement on a Therma-Tru entry door typically runs $340-$580 including parts and labor. Hinge replacement and frame re-shimming runs $280-$450. Sill replacement on Fiber-Classic or Smooth-Star units runs $420-$680. Full-frame replacement with an impact-rated Therma-Tru entry door system, including permit and inspection, typically runs $2,800-$4,600 depending on size, sidelite configuration, and hardware selection. These are North Palm Beach market ranges based on our 2024-2025 job history; your exact price comes from our measured survey. Call (561) 475-1246 to schedule - estimates are free, and the written quote is the final price.
Book Your Therma-Tru Service in North Palm Beach, FL
Call (561) 475-1246 to schedule your free estimate. A live person answers, 24/7. Sonia Raman will measure your opening, diagnose the actual failure, and hand you a written price before any work starts. Every job carries the 365-Day Done Right Promise and leaves a documented photo record. Haven Clause 1: the quote and the invoice are the same document.
Written by Sonia Raman, Owner at Sightline Windows & Doors North Palm Beach, serving North Palm Beach since 2012.