Therma-Tru Impact Windows & Doors Nationwide | Sightline Windows & Doors Kendall

Therma-Tru Impact Windows & Doors in Kendall: What to Know First

We provide independent Therma-Tru impact windows and doors service in Kendall, with most repairs scheduled within two to five business days and full retrofits quoted in writing during the first visit. Typical Therma-Tru impact window repairs in this market run $340-$780; full-unit replacements with impact-rated glazing start around $1,850 per opening. We are not affiliated with or authorized by Therma-Tru - we are an independent service provider - and we do not begin any work until you have a written price you can compare. This page is for Kendall homeowners who own Therma-Tru impact windows or doors and need them to perform when the next storm tracks across Biscayne Bay. Call (786) 321-3319 to schedule your free estimate.

Call (786) 321-3319

How Therma-Tru Products Fail - and How We Fix Them

• Impact sash corner separation on Classic-Craft Canvas Collection units. The multi-point locking hardware in these fiberglass doors sees cyclic stress from Kendall’s afternoon thunderstorm pressure swings, and the corner joints in the sash frame can work loose after four to six years. We remove the sash, re-square the frame using a true-corner jig, and replace the factory screws with stainless steel equivalents rated for coastal exposure.
• Laminated glass delamination in Pulse Series impact sidelites. The interlayer in these narrow vertical units degrades faster in south-facing installations where daily UV exposure exceeds 1,200 BTU/sq ft during July and August. We see this most often in Kendall Glen and the neighborhoods west of the Turnpike. The fix is full glass replacement with an OEM-equivalent laminated pane, not a patch - the interlayer failure is progressive and cannot be reversed.
• Compression seal hardening on Fiber-Classic impact-rated entry systems. The bulb seal at the meeting stile loses elasticity after sustained exposure to humidity above 75%, which is most mornings in Kendall from May through October. We specify a silicone-core replacement seal with a higher Shore A durometer than the original, which maintains contact pressure through the wet season without over-compressing the door slab.
• Drainage weep clogging in Smooth-Star impact patio door sills. The weep channels in these vinyl-clad sills trap pollen from Kendall’s royal poinciana and gumbo limbo shedding cycles, then back-fill during heavy rain. We pull the sill cap, rod the channels with a purpose-built weep tool, and reset the sill with a slight pitch correction - the factory spec allows 1/8 inch per foot, but we often find sills dead-level from rushed original installs.
• Hardware throw misalignment on DuraGuard impact multi-point locks. The locking points drift out of register when the door slab settles on its hinges, a process accelerated by the soil movement common in Kendall’s fill-built sections near Snapper Creek. We measure the keeper alignment with a digital depth gauge, then shim or relocate the keepers rather than forcing the lock mechanism - which preserves the warranty and avoids the stripped mounting bosses we’ve seen on too many “adjusted” doors.

Our Therma-Tru Impact Windows & Doors Process

1. 1
   Measured survey. We record every opening to the sixteenth of an inch, note the exposure orientation, and photograph the existing unit’s label and any visible damage. You keep this document.
2. 2
   Diagnostics with parts decision. We identify the Therma-Tru series, manufacturing date code, and whether the failure warrants OEM parts, quality aftermarket equivalents, or full-unit replacement. We explain the trade-off in writing.
3. 3
   Written scope and price. The measured survey becomes the quote - same document, same numbers. No separate “final invoice” surprise.
4. 4
   Prep and protection. We lay floor protection, verify the impact-rated temporary covering if the opening will be exposed, and confirm the crew license numbers match what we provided at booking.
5. 5
   Install or repair with dry-fit verification. We set the frame or sash without sealant first, check plumb and operation, then proceed - “Measure once, document it, then cut.” Sonia Raman insists on this sequence after seeing too many jobs in Kendall where premature sealant locked in a twisted frame.
6. 6
   Test, photo record, and warranty stamp. We cycle the hardware fifty times, check the lock throw with a feeler gauge, photograph the completed work, and apply the 365-Day Done Right Promise under Haven Clause 5: No surprises.

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What Therma-Tru Impact Windows & Doors Costs in Kendall

Prices include removal and disposal of the existing unit, installation per Miami-Dade HVHZ protocol, and the documented photo record. We do not charge for the measured survey or the written quote. Call (786) 321-3319 for an exact figure - estimates are free, and we offer a free second opinion on any competitor’s written estimate.

Why Kendall Homeowners Call Sightline Windows & Doors Kendall for Therma-Tru Work

We have completed more than 18,000 window and door openings since 2012, every one with a written price before work started and a photo record when finished. Our technicians are background-checked, uniformed, and identified by license number before arrival - Haven Clause 3, Verified Crews. We carry eight manufacturer lines - PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux - so if your opening is better served by a different impact-rated product, we will say so and show you the spec sheet. The 365-Day Done Right Promise is stamped on every job, not offered as a favor. Live phone coverage is available 24/7, and the person who answers can schedule your estimate or connect you directly to a technician who knows Therma-Tru hardware.

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