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

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

Therma-Tru entry and patio door installation in Weston typically runs $2,800-$6,400 for a complete replacement, depending on whether we’re working with a standard Classic-Craft fiberglass slab or a full SentryGate impact-rated system with sidelites. We stock Therma-Tru-compatible hardware, sill caps, and sweep assemblies on our trucks, and most installs are scheduled within 3-5 business days after the measured survey. Homeowners usually realize something’s wrong when the door sticks during humid summer mornings, the sweep has visible daylight gaps, or the multipoint lock no longer draws the slab tight against the weatherstrip - all signs that the installation, not just the door, is failing.

Call (754) 812-9260

Which Therma-Tru Models This Applies To

Therma-Tru’s product stack breaks into three tiers we see regularly in Weston: the Classic-Craft and Smooth-Star fiberglass entry lines, the Fiber-Classic paintable series, and the impact-rated SentryGate patio and entry systems. The critical compatibility gotcha is the hinge mortise pattern: Classic-Craft uses a 4-inch-by-4-inch standard with a 5/8-inch radius corner, while SentryGate impact units ship with heavy-duty 5-inch ball-bearing hinges on a reinforced frame that will not accept standard retrofit hardware without re-machining. We check this first, because ordering a slab without verifying the hinge prep has cost more than one homeowner a six-week re-order.

To identify your exact model, look for the white adhesive label on the door edge or top rail - it lists the series code, date of manufacture, and fire-rating. The first two letters tell us everything: CC for Classic-Craft, SS for Smooth-Star, SG for SentryGate. For hardware, we source OEM Therma-Tru multipoint locks and sweep kits direct from the distributor in Fort Lauderdale, but we’ve also validated heavy-duty aftermarket equivalents from Hoppe and Ferco that match the spec at roughly 60 percent of OEM cost. We document which route we recommend and why in the written scope, never as an afterthought.

Signs Your Therma-Tru Door Installation Is Failing

• The slab binds or sticks seasonally. In Weston, the combination of 90-degree summer humidity and winter dry spells causes fiberglass frames to expand and contract against a rough opening that was never properly shimmed. We see this most in homes built 2005-2015 where the original installer used composite shims that degraded.
• Visible daylight under the sweep or at the jamb. This means the door is no longer seating square in the frame. The root cause is usually sagging hinge screws in soft pine jambs, or a threshold that settled because it was fastened to subfloor without proper support blocking.
• The multipoint lock handle turns but the bolts don’t engage. Therma-Tru’s three-point systems depend on precise alignment between the strike plates and the deadbolt/shootbolt locations. Frame shift of even 1/8 inch - common after minor foundation settling in Weston’s sandy soil - will cause this.
• Water staining at the bottom corners of the interior casing. This is the flashing failure pattern. Therma-Tru doors ship with a sill pan, but if the installer skipped the end dams or used non-compatible sealant at the threshold-to-jamb joint, water tracks straight in during our summer downpours.
• Condensation between the glass on patio doors. On Therma-Tru French and sliding units, this indicates seal failure in the insulated glass unit. The installation isn’t the direct cause, but improper shimming that flexes the frame accelerates the breakdown - something we check during every survey.

Before

After

Replacement Cost & What’s Included

What drives the range: the condition of the rough opening once we remove the old unit, whether the existing trim and casing can be preserved, and whether we’re matching a non-standard jamb depth (common in Weston’s custom homes, which run 6-9/16-inch or even 7-1/4-inch jambs). Every quote includes the measured survey you keep, the written scope with line-item pricing, permit pulling if required by Broward County for impact-rated work, and our 365-Day Done Right Promise under Haven Clause 5: No Surprises. The price on the document is the price on the invoice.

DIY or Call Us?

There’s a short list of checks any homeowner can make safely: verify the door label for model information, photograph the hardware and any visible gaps, and confirm whether the threshold screws are loose. Beyond that, Therma-Tru door installation involves risks that justify a professional. Fiberglass slabs weigh 80-120 pounds; a two-person lift is non-negotiable. Impact-rated SentryGate units with laminated glass can exceed 200 pounds. More critically, improper shimming or failure to seal the sill pan correctly voids the manufacturer’s warranty and creates latent water damage that won’t show for two or three Florida wet seasons. We document every step with photos you receive, because evidence matters when you’re making this call. For a measured survey and written price before any work starts, call (754) 812-9260.

FAQs