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Therma-Tru Window Installation: The Riviera Beach Owner’s Guide
Therma-Tru window installation in Riviera Beach typically runs $220-$480 per window for a full replacement when the existing unit has failed, and we stock the most common Therma-Tru window components on our trucks so most jobs wrap up in a single visit. The way most owners find us is simple: they notice a window that will not close square against the frame anymore, or they see daylight sneaking past the weatherstripping, or the sill is soft under the paint. What started as a draft becomes a sticking sash, and by the time the salt air off the inlet has had a season to work on it, the window is fighting back. We have been setting and sealing replacement windows across Riviera Beach and the Singer Island side of things long enough to know exactly what that looks like.
Key Takeaways:
- Most Therma-Tru window replacements in Riviera Beach are completed in one visit.
- We carry common Therma-Tru-compatible sashes, balances, and weatherstripping on the truck.
- Both warranty layers get registered in writing before we leave your driveway.
- Call (786) 829-6722 for a free on-site estimate and exact pricing.
Which Therma-Tru Models This Applies To
Therma-Tru built its name on entry doors, but their window lines show up regularly across newer construction in Riviera Beach, from the homes along Blue Heron Boulevard down to the older blocks near the marina. We work on their double-hung and casement window lines most often, and the compatibility question usually comes down to two things: the glass pack dimensions and the balance hardware. If you remove the sash and check the top edge, Therma-Tru stamps a series code and date of manufacture right on the frame. That stamp is the fastest way to confirm exactly what you have.
The OEM-versus-aftermarket decision matters more with Therma-Tru than with some brands. Their original weatherstripping is a specific profile that aftermarket replacements do not always match cleanly. We generally recommend OEM seals on Therma-Tru sashes and OEM balances on double-hungs, because the aftermarket balance cartridges we have handled for these units tend to fail a year earlier in Florida humidity. For glass packs, a quality aftermarket sealed unit is often a smarter use of money, especially if the original unit was already showing fog between the panes. Dale Kessler has spent enough time around Therma-Tru products to tell you which swaps hold up and which ones we have had to redo, and he will put that recommendation on paper before we order anything.
Signs Your Therma-Tru Window Installation Is Failing
- The sash will not stay up without propping. This almost always points to spent balance cartridges. Therma-Tru double-hungs use a spring cartridge inside the jamb, and when it fatigues, the window drops like a guillotine. It is not a lubrication issue; the cartridge is done.
- You can hear Blue Heron Boulevard traffic through a closed window. A failing seal stack or flattened weatherstripping lets sound and air move through gaps you cannot see. If the window feels loose when you press on it, the seals have lost their tolerance.
- Condensation forms between the panes. That is a blown insulated glass unit. The desiccant inside the spacer has absorbed all the moisture it can, and the only real fix is a replacement glass pack. This is common in Riviera Beach homes within eight to twelve years because of the constant humidity cycling.
- The window binds or grabs when you crank it open. Therma-Tru casement operators use a specific gear mechanism, and when the teeth wear or the arm bends, the window fights you every inch. Forcing it usually breaks the handle off entirely.
- Paint is bubbling or soft at the sill corners. That means water has been getting past the exterior seal and sitting in the wood or composite sill. Once the sill starts to rot or delaminate, the window needs to come out to do the repair properly.
Replacement Cost & What’s Included
For Riviera Beach homeowners, a full Therma-Tru window installation with a new sash or complete unit replacement generally falls between $220 and $480 per window depending on size, glass package, and whether the frame itself needs work. A simple balance cartridge replacement runs lower, often $160-$240 installed. A full-frame replacement on a larger casement with impact-rated glass can push toward $600, but we will not know until we measure the opening and see what the existing frame looks like.
What you get with us is a line-item quote on paper before we start. The labor, the parts, any disposal, and the permit if one is required are listed separately so there is no argument about what you are paying for. Per manufacturer warranty registration and our own Done Right Promise are included on every window we set. We register both warranty layers in writing before the truck leaves your driveway, because a warranty that is not registered is not a warranty, it is a piece of paper with small print. Call (786) 829-6722 for an exact estimate, and if you are comparing bids, bring them to the table. We will show you where the difference is.
DIY or Call Us?
There are a few things any homeowner can safely check before calling us. Inspect the condition of the exterior caulk bead around the window frame. Look for gaps, cracking, or separation. Check that the weep holes on the bottom of the frame are clear so water drains the way Therma-Tru designed it. Those are maintenance items, and you can handle them without risk.
Replacing a balance cartridge, weatherstripping, or a glass pack is different work. Getting the sash out of a Therma-Tru frame wrong means a window that drops shut on a hand, or a broken glass pack that costs more than the repair. We have also seen owners order the wrong glass dimensions off an online listing and end up with a unit that does not seal. When you are ready for it done right the first time, call us at (786) 829-6722. We will send a technician who measures twice, brings the right parts, and stands behind the work in writing.
FAQs
A properly installed Therma-Tru window in Riviera Beach should give you 15 to 20 years of service, though the seals and balances typically need attention between years 10 and 15 because of Florida humidity and constant UV exposure. Windows on the south and west faces fail sooner than those on the north side. Call (786) 829-6722 and we will inspect what you have and tell you honestly how much life is left in it.
Yes, we repair Therma-Tru windows whenever the frame is solid and the failure is isolated to the balances, seals, operator, or glass pack. If the frame itself is rotted or the jamb is out of square from settling, a complete replacement is the honest call. We will show you the frame condition before we quote anything.
Most single-window replacements and repairs are completed the same day we arrive, typically within two to three hours including cleanup and warranty registration. A full-frame replacement on a larger window may take half a day. We will give you a straight answer when we see the opening.
We stock the most common Therma-Tru balance cartridges, weatherstripping profiles, and operators on our trucks, and we maintain local supply relationships for glass packs and full window orders. We can also source parts for PGT, CGI, and CWS units when the home mixes brands. If you call (786) 829-6722 with your model information, we will tell you before we arrive whether we are bringing the part or ordering it.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Riviera Beach and nearby areas.
Six Reasons Homeowners Choose TruePane Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.



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