Therma-Tru Door Replacement Nationwide

Therma-Tru Door Replacement in San Antonio: What to Know First

Therma-Tru door replacement in San Antonio typically runs $1,200 to $4,800 depending on whether you’re replacing a single entry door, a full door-and-frame unit, or a multi-panel patio setup. As an independent Therma-Tru service provider, Juniper Windows San Antonio handles everything from slab swaps to complete frame tear-outs, usually completing the job in one day once the door arrives. We’re not a manufacturer-authorized shop, and we think that matters less than knowing exactly what your Therma-Tru door needs and quoting it honestly before work begins.

Call (903) 488-7019

This page is for San Antonio homeowners whose Therma-Tru entry door has warped, cracked, rotted at the sill, or simply stopped sealing against Texas heat and humidity. If that sounds like your house, call (903) 488-7019 and we’ll walk through what you’re seeing.

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

• Fiberglass skin delamination on Classic-Craft and Fiber-Classic models. San Antonio’s UV index is brutal, and south-facing doors take it hardest. The outer fiberglass skin can separate from the foam core after years of direct sun, leaving visible bubbles or soft spots under the finish. This isn’t a cosmetic issue – once the skin lifts, moisture gets inside and the door loses its structural integrity. Replacement is the fix; patching delaminated fiberglass never holds.
• Rot at the bottom rail on Smooth-Star and Pulse series doors. These doors use a polyurethane core, but the bottom edge can still wick water if the door sweep wears out or the threshold settles. In San Antonio, our summer downpours pool on front porches, and a door that sits in standing water after every storm will eventually rot at the rail. We replace the door and address the threshold and sweep so it doesn’t happen again.
• Frame warping on outswing patio doors. Therma-Tru makes solid products, but an outswing door that faces west will see afternoon temperatures over 100 degrees for months. The frame can twist just enough to break the weatherstripping seal, and suddenly your AC bill climbs because conditioned air is leaking around the door. We’ve fixed this on doors all over Alamo Heights and Stone Oak – sometimes it’s a frame replacement, sometimes a full unit swap.
• Hinge sag on heavy Classic-Craft mahogany-grain doors with decorative glass. Those glass lites add real weight, and when a door is opened and closed 20 times a day for a decade, the hinges and the jamb take a beating. The door starts dragging at the latch side or won’t stay latched. Depending on the damage, we either re-hang with reinforced hardware or replace the slab with new hinge preps.
• Seal failure around the sill on doors installed before 2015. Older Therma-Tru installs in San Antonio often used builder-grade sill pans that don’t match today’s code. Water gets underneath, the subfloor rots, and the door drops. We pull the old unit, repair the rough opening, and set the new door on a modern sill pan that actually sheds water.

Our Therma-Tru Door Replacement Process

1. 1
   You call us at (903) 488-7019. A live person answers, we ask what’s going on with your door, and we book a free estimate.
2. 2
   We inspect the door, frame, threshold, and rough opening. Sean Mackey or one of our background-checked techs measures everything, checks for water damage, and figures out exactly which Therma-Tru model you have.
3. 3
   You get a written price before any work starts. Not a ballpark, not an estimate that changes at the door. A line-item price for the door, the hardware, the labor, and any frame repair. Fixed, in writing, no change orders.
4. 4
   We order the replacement. For exact match, we spec a new Therma-Tru unit through our supplier network. If OEM isn’t the move for your situation, we’ll say so and quote a quality aftermarket option that still fits your rough opening and your trim.
5. 5
   Install day. We remove the old door, repair the rough opening if needed, flash it properly, and set the new door. We adjust the hinges, the strike plate, and the sweep until it closes flush and seals tight.
6. 6
   We walk the job with you and you pay the same price we quoted. Before-and-after photos go to your phone. The door is covered by our 365-Day Done Right Promise – parts and labor, in writing, for a full year.

What Therma-Tru Door Replacement Costs in San Antonio

Here’s what we see across San Antonio for Therma-Tru work, including labor:

• Slab-only replacement (existing frame is solid): $1,200 to $2,200
• Full door-and-frame unit replacement: $2,000 to $3,800
• Entry door with decorative glass lites: $2,800 to $4,800
• Patio door replacement (single panel, outswing): $2,400 to $4,500

What moves the price: whether your frame is reusable, whether we’re pulling permits, the glass package you choose, and whether the rough opening has hidden rot that needs repair. The quote you get from us accounts for all of that before work starts. Call (903) 488-7019 for a free estimate – you’ll have a written number in hand, not a guess.

Why San Antonio Homeowners Call Juniper Windows San Antonio for Therma-Tru Work

San Antonio has plenty of door companies. Very few of them will write the price down before they start swinging a hammer. We built Juniper Windows San Antonio on that one promise: a written price before any work begins, and a 365-Day Done Right Promise that covers every installation, parts and labor, for a full year. If the door isn’t hung right, we come back and fix it. No charge, no argument. That’s the Relay Standard, and it’s how we’ve been running jobs since 2001.

Our techs work on Therma-Tru doors every week, but we also carry PGT, CGI, CWS, and ES Windows in our product arsenal. That means when a Therma-Tru replacement isn’t the right call – maybe you want impact-rated glass instead, or your budget points toward a different line – we’ll tell you straight. Sean Mackey built this company on straight talk about U-factors, flashing details, and realistic timelines. If the numbers don’t make sense on paper, they won’t make sense on your wall either.

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