Therma-Tru Door Installation Nationwide | Sightline Windows & Doors Jupiter

Therma-Tru Door Installation: The Jupiter Owner’s Guide

Therma-Tru door installation in Jupiter typically runs $1,850 to $4,200 for a complete entry system replacement, depending on whether you’re keeping the existing frame or replacing the full rough opening. We stock Therma-Tru-compatible components for same-day repair on most Classic-Craft, Smooth-Star, and Fiber-Classic series, and we carry the full catalog for measured order-and-install on their higher-end Profiles and Pulse lines. Most Jupiter homeowners find us after noticing daylight around the jamb, a door that drags the sill, or hardware that no longer seats square - symptoms that usually trace back to frame settlement, seal fatigue, or hinge mortise wear after 8-15 years of Florida’s wet-dry cycling.

Call (772) 362-5402

Which Therma-Tru Models This Applies To

Therma-Tru stamps their fire-rated label on the hinge edge of every door slab, and the series code matters for what fits your existing frame. Classic-Craft (CCA, CCB, CCC) uses a 1¾-inch slab with a composite frame that accepts standard 4⅞-inch backset hardware; Smooth-Star (SMC) runs 1⅜ or 1¾ inch with a PVC-wrapped frame that demands Therma-Tru’s own hinge screws - standard wood screws strip the pilot holes. Fiber-Classic (FC) is the older line you’ll see in Jupiter homes built 2005-2015; the 36-inch nominal door is actually 35¾ inches, and that quarter-inch gap is where water intrusion starts if the sill pan wasn’t bedded in sealant.

We stock OEM sills, sweeps, and jamb seal kits for all three lines. On hardware, we source direct from Therma-Tru for their multi-point locking systems - the aftermarket equivalents for those are inconsistent on backset alignment. For hinges and weatherstrip, we use a Florida-tested aftermarket equivalent that matches the OEM compression spec at roughly 60 percent of dealer cost. We pass that difference through. Sightline Windows & Doors Jupiter is an independent service provider; we are not affiliated with Therma-Tru.

To identify your part, check the hinge-edge label for a six-digit SKU starting with the series prefix. If the label is painted over - common in Jupiter’s salt-air environment - measure the slab thickness, the jamb depth (typically 4⅝ or 6⅝ inch here), and the backset of your deadbolt. Those three numbers tell us what ships.

Signs Your Therma-Tru Door Installation Is Failing

• Daylight visible at the jamb or head. The compression seal has lost its memory, or the frame has racked from hinge screw withdrawal. In Jupiter, UV exposure on the east-facing doors accelerates this; we see it first on morning-sun entries in Abacoa and Egret Landing.
• Door drags the sill or threshold. The adjustable sill cap has bottomed out, or the subfloor has swelled from moisture intrusion. On Therma-Tru’s adjustable aluminum sills, the set screws corrode in coastal zip codes - we replace with stainless hardware.
• Multi-point lock won’t throw or bind. The gearbox has worn from salt-air corrosion, or the keepers have shifted as the frame settled. This is a security issue, not just a convenience; a single-point deadbolt is not a substitute.
• Condensation between storm door and entry door. The weep holes in the storm door frame are blocked, or the entry door’s thermal break has failed. Therma-Tru’s fiberglass slab won’t rot, but the jamb will if moisture sits.
• Finish bubbling or peeling at the bottom rail. Water is wicking up from an unsealed sill pan or missing end dams. We’ve found this on Jupiter Inlet Colony homes where the original installer skipped the pan sealant entirely.

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Replacement Cost & What’s Included

What drives the range: jamb depth (4⅝-inch standard vs. 6⅝-inch for block construction), whether the rough opening needs reframing, and whether we’re matching existing trim or replacing it. Every quote is the measured survey you keep; the invoice matches it. No change orders. Haven Clause 1.

The 365-Day Done Right Promise covers labor and installation. Manufacturer defects go through Therma-Tru’s warranty; we handle that paperwork and do not charge for the service call.

DIY or Call Us?

What you can safely check: the hinge screws for tightness, the sweep for visible wear, and the sill adjustment screws for operation. If the door is dragging, try raising the sill cap with a Phillips head - but stop if the screws are frozen. Forcing them snaps the aluminum track, and that’s a full sill replacement.

Where DIY goes wrong: removing a Therma-Tru slab without supporting the frame first. These are not hollow-core interior doors; a fiberglass slab with glass weighs 80-140 pounds, and the frame is designed for that load. We’ve reframed three Jupiter openings this year where the homeowner removed the slab and the header settled before the new door arrived. The multi-point lock system also requires precise keeper alignment; a ⅛-inch error and the gearbox binds in six months.

Call (772) 362-5402. We’ll read the opening, name the price, and schedule the install. Measure once, quote it straight, install it right - that’s the whole business.

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