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James Hardie Windows & Doors: The Fort Lauderdale Owner’s Guide
James Hardie windows and doors in Fort Lauderdale typically run $4,500–$15,000 for full replacements, and $250–$700 for sealing or gasket repairs, depending on the specific part and how much of the opening we’re working with. We stock common James Hardie-compatible window and door sealing components, trim kits, and hardware, and we install them same-week in most cases. Most owners discover the part has failed when they notice water staining below a window, a door that suddenly drags against the frame, or a draft that wasn’t there last season. Salt air does that. Fort Lauderdale is hard on exterior window and door systems, and the failure usually starts at the seal, not the glass.
One thing I’ll say early, because it saves people money: half the calls we get for “failed windows” are actually failed flashing or degraded caulk around the James Hardie trim. The window itself is fine. We figure out which one it is before recommending anything, because we price the fix rather than the upsell.
Which James Hardie Models This Applies To
James Hardie does not manufacture glass window sashes or insulated glass units. What they make, and what we work with most often in Fort Lauderdale, is the trim, fascia, soffit, and architectural surrounds that finish the window or door opening — HardieTrim boards, HardieSoffit panels, and the flashing system that ties into HardiePlank lap siding. So when we say “James Hardie windows and doors,” we’re usually talking about the James Hardie exterior opening system: the trim boards that frame the unit, the flashing tape and joint treatment behind them, and the caulk and paint system that seals the assembly.
That matters for compatibility. HardieTrim comes in standard profiles — 3/4 x 4/4 boards, 3/4 x 6/4 boards, and 5/4 x 4 boards — and the dimensions are exact. A big-box off-brand trim board is not a drop-in replacement, because HardieTrim is a fiber cement product, not wood or PVC, and it expands and contracts differently in Florida humidity. If the part number on the back of the removed board doesn’t match what goes back in, you get a joint that opens up the first summer. We match by the product code printed on the lap edge of the existing board, and when that’s faded, we measure the board thickness and profile with a caliper and match to the current HardieTrim spec.
For doors, the same logic applies to the fiber cement door surrounds and the kick plates below exterior doors. We’re an independent service provider — not affiliated with James Hardie — so we’re free to tell you when an OEM-matching Hardie board is the right call and when a properly rated aftermarket equivalent makes more sense for the money. Usually for trim, OEM-matching matters. For flashing and caulk, the aftermarket options from OSI and Sika outperform the generic stuff, and we use those without hesitation.
Styles & brands we work with
Signs Your James Hardie Windows & Doors Is Failing
- Caulk pulling away at the trim-to-siding joint. Fiber cement expands and contracts with heat; Florida’s summer moisture cycles eventually crack most caulk after 5–8 years. Once that joint opens, water works behind the trim and slowly rots the substrate it’s fastened to.
- Soft spots or bubbling paint on HardieTrim below a window. That’s the classic Fort Lauderdale failure: a window seal or flashing leaks behind the trim, and the fiber cement board absorbs moisture at its cut edge. The paint fails first, then the board starts to swell and crumble.
- A door that sticks only after heavy rain. HardieTrim around doors is rigid, but the framing behind it isn’t always. If the substrate swells from hidden water intrusion, the trim stays put while the door frame shifts, and you get a bind.
- Gaps opening between the window frame and the HardieTrim. When the water-resistive barrier behind the trim fails, the wood bucks around the window can compress. The visible symptom is a gap that widens in humid months.
- White chalky residue running down the siding below a window. Fiber cement doesn’t leach much, but the galvanized flashing and fasteners do when they’re constantly wet. Efflorescence means water is moving through the assembly, which means something’s not sealed.
See the difference
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After
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After
Before
AfterReplacement Cost & What’s Included
If the repair is trim-only — replacing one or two HardieTrim boards, re-flashing the head or sill, and re-caulking the joint — expect $400–$1,000 per opening in Fort Lauderdale. If the full window or door needs to come out and go back in with new flashing, new jamb extensions, and new trim, it lands in the $4,500–$15,000 range from the pricing guide, and the window itself is usually the biggest line item. What drives the difference: whether the original unit is still square and serviceable, how much of the rough opening has been affected by moisture, and whether we’re matching existing HardiePlank siding lines or rebuilding them.
The written price we hand you before work starts covers parts, labor, debris removal, and any re-painting of the new trim. No change orders on the back end, no surprise material fees. And the work carries our 365-Day Done Right Promise: if it’s not done right, we make it right, in writing. That guarantee applies to the whole opening, not just the board we touched.
DIY or Call Us?
The safe DIY move is inspection: after a hard rain, run your hand along the bottom edge of the HardieTrim and look for moisture, chalky streaks, or gaps. Mark them with painter’s tape so you can watch whether they widen. What you shouldn’t do is pull the trim yourself. HardieTrim boards are nailed to the framing behind the weather barrier, and pulling one without cutting the caulk and taping the flashing properly is how a $400 trim replacement becomes a $4,000 water intrusion problem.
Flat roofs, second-story window trim, and any opening with height involved are where we draw the line for homeowners. We’re set up for it, with the right ladders, lift equipment, and fall protection. If you’re not sure whether you have a trim issue or a window issue, call (754) 354-7423 and we’ll have someone look at the photos you send before we schedule anything.
FAQs
A properly flashed and maintained James Hardie opening assembly — trim, flashing, caulk — lasts 10–15 years before the caulk and paint need full replacement in Fort Lauderdale’s salt-air climate. The window unit inside usually fails first, at 10–20 years. If your caulk joints are older than 8 years and you haven’t touched them, you’re on borrowed time. Call (754) 354-7423 and we’ll inspect the whole assembly before you’re repainting trim that’s hiding trouble.
Yes, if the damage is caught early. Caulk bead failure and minor flashing gaps are repairable with the right sealants and new flashing tape, usually $250–$700 per opening. Once the board itself is swollen or crumbling, repair is a temporary patch; replacement is the honest fix. Call (754) 354-7423 and we’ll tell you which one you’re dealing with — price first, before any work.
Most trim and flashing repairs run 4–8 hours per opening, including re-caulking and touch-up painting. A full window replacement with new HardieTrim is a one-to-two-day job, and we schedule so you’re not boarded up overnight. Call (754) 354-7423 and we’ll give you the window and the arrival time before the crew shows up.
We keep common HardieTrim profiles, flashing tape, and sealant lines stocked for Fort Lauderdale service calls, and we order OEM-matched boards to spec when the existing profile is uncommon. If you tell us the product code on the lap edge of your existing trim, we can confirm stock before we schedule. Call (754) 354-7423 with that code.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Fort Lauderdale at Sawyer Remodel Fort Lauderdale, serving Fort Lauderdale and nearby areas.
