Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Before
AfterTherma-Tru Custom & Geometric Windows in North Palm Beach: What to Know First
We install and service Therma-Tru custom and geometric windows across North Palm Beach as an independent Therma-Tru service provider, with measured surveys that become your written quote and most custom orders shipping in 8-12 weeks from specification. Our pricing starts around $1,800 for a standard geometric replacement and runs to $6,500+ for oversized arched impact-rated units with integrated sidelights, with every dollar named in writing before we order glass. This page is for North Palm Beach homeowners who already own Therma-Tru products and need shaped, arched, or oversized openings replaced or upgraded, whether in a 1980s Lakeside Park concrete-block home or a newer Intracoastal build. Call (561) 475-1246 to schedule your measured survey.
How Therma-Tru Products Fail - and How We Fix Them
- Classic-Craft arched top lights develop sealant line drift. The curved rail in the Classic-Craft canvas collection uses a two-piece lamination that can separate at the apex under South Florida’s UV load, especially on west-facing elevations in North Palm Beach where afternoon temperatures at the glass surface exceed 165°F. We measure the radius with a digital contour gauge, order the replacement sash from Therma-Tru’s custom shop, and reinstall with a back-rod and neutral-cure silicone joint that accounts for the thermal movement we documented.
- Smooth-Star geometric units show corner delamination at miter joints. The fiberglass skin over the polyurethane core in Smooth-Star shaped windows can lift at compound miters when the factory corner key doesn’t fully seat, a defect we see more often in trapezoid and pentagon configurations than in rectangles. We strip the failed corner, inject two-part structural epoxy, and clamp with alignment jigs rather than relying on the original mechanical fastener alone.
- Impact-rated custom units lose their DP rating after improper field modification. Therma-Tru’s impact-rated geometric windows carry a specific design pressure certification tied to the exact glass make-up and frame reinforcement; we’ve found three North Palm Beach homes where a previous installer cut down a standard unit to fit an arched opening, voiding both the impact rating and the warranty. We verify the original certification label, match the laminated glass interlayer spec exactly, and document the replacement with photos for your wind mitigation inspector.
- Double-door sidelight assemblies rack out of square in coastal humidity. The sidelight frames on Therma-Tru entry systems with adjacent geometric windows are stabilized by composite reinforcement channels that can absorb moisture if the end dams aren’t sealed at installation, a problem amplified in North Palm Beach’s salt-air environment within two miles of the Intracoastal. We pull the assembly, check the channels with a moisture meter, replace any reading above 18%, and reassemble with butyl end-dam tape.
- Oversized direct-set units sag at the head jamb. Therma-Tru’s direct-set geometric windows over 48 inches wide rely on a steel reinforcement bar in the head that must be supported at mid-span; we’ve corrected two installations in North Palm Beach where the bar was missing or undersized, causing the head to bow and the silicone bite to fail. We calculate the deflection load, specify the correct bar gauge, and install with jack studs at 24 inches on center.
Our Therma-Tru Custom & Geometric Windows Process
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Measured survey. Sonia Raman measures every opening herself on the first visit. If the opening isn’t right, the window isn’t right - that’s where we start. You keep the dimension sheet.
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Diagnosis and specification. We identify the Therma-Tru series, document the failure mode with photos, and determine whether OEM replacement sashes, custom shop orders, or quality aftermarket components are appropriate.
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Written quote. Haven Clause 1: the price we write is the price you pay. No change orders, no surprises. The quote references exact Therma-Tru part numbers where applicable.
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Fabrication and delivery. Custom geometric units typically ship in 8-12 weeks. We coordinate delivery to our North Palm Beach warehouse, inspect for transit damage, and schedule installation.
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Installation and testing. Verified crews install per Therma-Tru’s published tolerances, not our approximation. We check operation, seal continuity, and impact rating compliance where required.
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Documentation and guarantee. You receive the photo record, the completed scope document, and the 365-Day Done Right Promise stamped under the Haven Standard.
Before
AfterWhat Therma-Tru Custom & Geometric Windows Costs in North Palm Beach
| Scenario | Typical Range |
|---|---|
| Standard geometric replacement (trapezoid, pentagon, circle-top) | $1,800 - $3,400 |
| Arched or curved unit, non-impact | $2,800 - $4,600 |
| Impact-rated custom geometric with laminated glass | $3,800 - $5,800 |
| Oversized direct-set with integrated sidelights | $4,800 - $6,500+ |
| Rough-opening correction (concrete block, older North Palm Beach home) | $800 - $2,200 additional |
What moves the price: the radius complexity, impact rating requirement, glass size and thickness, and whether the existing rough opening needs correction before the new unit can be set square. We quote all of this in writing before ordering. Call (561) 475-1246 for your measured survey and exact quote - estimates are free.
Why North Palm Beach Homeowners Call Sightline Windows & Doors North Palm Beach for Therma-Tru Work
We’ve installed and serviced 18,000+ openings since 2012, and a measurable share of those have been Therma-Tru products in the custom and geometric category. Our crews don’t guess at fiberglass lamination behavior or impact-rated assembly tolerances; they work from the manufacturer’s published installation manuals, supplemented by what we’ve documented in the field across North Palm Beach’s specific climate and construction types. If Therma-Tru lead times or part availability don’t match your timeline, we can specify equivalent performance from PGT, CGI, CWS, or ES Windows - always by what the opening requires, never by what we have in stock. Every job carries the 365-Day Done Right Promise, every crew member is background-checked and uniformed with license number visible, and every customer gets the photo record. Live phone coverage at (561) 475-1246, 24/7.
FAQs
No, provided we use OEM-specified components and follow published installation tolerances. As an independent Therma-Tru service provider, we are not affiliated with or authorized by Therma-Tru, but warranty coverage on the product itself remains intact when factory procedures are followed. We document our methods with photos for your records. Call (561) 475-1246 if you need clarification on your specific warranty terms.
Standard custom orders ship in 8-12 weeks from final specification; complex curved or oversized impact-rated units can extend to 14 weeks. We don’t quote availability we cannot verify. Call (561) 475-1246 to check current lead times for your specific configuration.
Often yes, through the custom shop or by engineering an equivalent from our other manufacturer lines. We measure the existing unit’s sightlines, glass make-up, and frame dimensions, then specify the closest match from available production. If an exact match isn’t possible, we quote the visual and performance equivalent in writing before you commit. Call (561) 475-1246 for a free second opinion on any written estimate you’ve received.
Replace when the frame is delaminating, the impact rating is compromised, or the unit is more than 20 years old and the glass is fogged; repair when the failure is isolated to hardware, sealant, or a removable sash component. We diagnose first, then recommend, with the reasoning documented in your quote. Call (561) 475-1246 to schedule the assessment.
Yes, for all impact-rated and rough-opening modifications; we handle the application, the inspection scheduling, and the final sign-off. Non-impact like-for-like replacements in North Palm Beach sometimes don’t require permitting, but we verify with Palm Beach County on every job and include that determination in your written scope. Call (561) 475-1246 to confirm your project’s permit status.
Ready to get your opening measured and priced in writing? Call (561) 475-1246 to schedule your free estimate. We’ll bring the contour gauge, the moisture meter, and the Haven Standard.
Written by Sonia Raman, Owner, Sightline Windows & Doors North Palm Beach at Sightline Windows & Doors North Palm Beach, serving North Palm Beach and nearby areas.