Therma-Tru Door Replacement Nationwide

Therma-Tru Door Replacement in Woodland Hills: What to Know First

If your Therma-Tru door has reached the point where caulk, shims, and a fresh coat of paint won’t bring it back, we replace it. Juniper Windows Woodland Hills provides independent Therma-Tru door replacement throughout Woodland Hills, CA, and most jobs are completed in a single day once the new door is on hand. A fiberglass Therma-Tru replacement typically runs $2,800 to $6,200 installed, depending on glass package, hardware, and what we find when the old door comes out. This page walks through how Therma-Tru doors fail, what replacement actually costs, and how our process works. Call (831) 508-3441 to get a written price for your specific opening.

Call (831) 508-3441

• Who this is for: Woodland Hills homeowners with a Therma-Tru door that’s warped, rotted at the bottom rail, or simply past its useful life.
• The short answer: We replace Therma-Tru doors with new Therma-Tru units or quality alternatives, install them square and sealed, and back the whole job with a 365-day written guarantee.

We’re an independent Therma-Tru service provider, not an authorized Therma-Tru dealer. That means we work for you, not for a brand quota, and we’ll tell you straight whether a Therma-Tru replacement makes sense for your home or whether another line from our shelf fits better.

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

Therma-Tru builds fiberglass doors, and fiberglass is genuinely good at resisting the kind of punishing sun and heat Woodland Hills dishes out from May to October. But no door is bulletproof, and after enough years in the west Valley climate, certain failure patterns show up again and again. Here’s what we see on actual Woodland Hills job sites.

• Bottom rail delamination and swelling on Classic-Craft units. Therma-Tru’s Classic-Craft and Fiber-Classic lines are built with a wood-grained fiberglass skin over a solid core. When the bottom rail seal is compromised, often from roof runoff or sprinkler overspray that sits on the sill, moisture works its way in. The skin visually separates from the core near the bottom corners. Replacement is the right call because re-bonding fiberglass skin is a losing fight once it’s started. We pull the old door, install the new unit with full sill pan flashing, and shim it so water leaves instead of lingering.
• Warmer-edge glass seal failure on Smooth-Star and Pulse doors. Therma-Tru doors with decorative glass or sidelites (the Pulse line especially) occasionally show condensation between the glass panes. It looks like fog you can’t wipe away. That means the insulated glass unit has lost its seal somewhere along the edge, often at the bottom corner where thermal expansion is greatest. On a door that’s otherwise solid, we can replace just the glass insert on many Therma-Tru models. On an older door showing frame wear too, a full replacement is cheaper than a partial fix that buys you eighteen months.
• Hinge-side sag on heavy Therma-Tru entry doors in Woodland Hills. Therma-Tru makes a substantial door. Install one with jamb screws that missed the framing or on a wall that has settled over decades in the Valley’s clay soil, and you get a door that drags on the strike side and won’t latch without a hip-check. We see this regularly in Sherman Oaks-adjacent neighborhoods and older pockets of Woodland Hills where homes date to the 1970s and early 80s. The replacement door requires re-mounting hinges into solid framing, often with longer screws, and hanging the slab so the reveal is even on all three sides. That’s not always what caused the first failure. It’s what prevents the second one.
• Sill rot and water intrusion on doors without proper pan flashing. Many Therma-Tru doors we replace were originally installed by production builders working at speed. A thin bead of caulk and good intentions don’t hold up under a decade of valley rain events. Once water gets under the threshold, the subfloor starts to go. We remove the old unit, inspect the rough opening, replace any soft subfloor material, and install a proper sill pan sloped to the exterior before the new door goes in. That detail is the difference between a fifteen-year door and a five-year door.
• Warped frames on older Smooth-Star units with sun exposure. A west-facing Woodland Hills door, especially on a two-story backing up to Warner Center, takes direct afternoon sun with no shade relief. Fiberglass doors hold up better than wood and far better than steel, but frames on twenty-plus-year-old Therma-Tru doors can develop a subtle twist. You’ll notice the weatherstrip gap at one corner letting in warm summer air. We set the new door with shims at hinge points and behind each strike plate, then verify the slab sits flush to the weatherstrip on all four sides before we call it done.

Our Therma-Tru Door Replacement Process

We don’t make you take a day off work to wait on a four-hour window. Here’s the entire sequence, start to finish, so you know exactly what to expect before you call.

1. 1
   Phone call and diagnosis. You call (831) 508-3441, a real person answers, and we ask about the door’s age, the failure you’re seeing, and what kind of glass or sidelites are involved. We’ll use that to figure out whether you need a full replacement or whether a repair is still viable. Most Therma-Tru doors showing frame or skin damage get replaced, not patched.
2. 2
   Home visit and measurement. We come to your Woodland Hills home, pull the interior casing where needed, and measure the rough opening itself, not just the old slab. Therma-Tru doors have specific sizing and shim requirements, and the rough opening dimensions dictate everything.
3. 3
   Written price before work starts. We hand you a line-item written price covering the door, hardware, glass, trim, flashing, haul-away, and labor. No estimate that morphs later. The number on that page is the number you pay.
4. 4
   Replacement day. The crew arrives, protects the work area, removes the old door, and repairs any framing or subfloor issues in the opening. New door goes in, shimmed square, sealed, and adjusted for proper latch and strike fit.
5. 5
   Testing and walkthrough. Before we pack up, the door gets cycled repeatedly, checked for light gaps around the weatherstrip, and confirmed to latch and deadbolt without force. We walk you through what we did and what to watch for.
6. 6
   365-Day Done Right Promise. The entire job is covered in writing for a full year. If anything isn’t right, we make it right. No charge, no argument, no callback runaround.

What Therma-Tru Door Replacement Costs in Woodland Hills

Ballpark numbers before you pick up the phone, because you should never have to call just to know what you’re walking into.

• Single fiberglass Therma-Tru entry door, standard glass, no sidelites: $2,800 – $3,800 installed.
• Therma-Tru entry door with one sidelite and decorative glass upgrade: $4,200 – $5,400 installed.
• Full entry system with two sidelites, transom, and upgraded hardware: $5,500 – $7,800 installed.
• Interior Therma-Tru door replacement (closet, hallway, bedroom): $380 – $700 installed per door.
• Door slab-only replacement, reusing existing frame in good shape: $1,200 – $2,200 installed.

What moves the price: impact-rated glass (built to resist wind-borne debris without shattering) adds $800 – $1,400. Full-grain wood-grain finishes on Classic-Craft units outprice smooth finishes. Hardware upgrades from stock to entry-grade Schlage or Baldwin-level trim add $150 – $450. Rot repair or subfloor work in the rough opening is the wild card, usually $150 – $600 once we see what’s underneath. Call (831) 508-3441 and we’ll get you a written quote, free.

Why Woodland Hills Homeowners Call Juniper Windows Woodland Hills for Therma-Tru Work

Sean Mackey has been measuring rough openings and fitting frames across Los Angeles for nearly two decades, and he studied building construction technology at LA Trade-Tech. What that means in practice: he understands what a door has to endure in Woodland Hills, from the heat cycles that stress fiberglass skins to the settling that slowly torques a hinge-side jamb. Get the numbers right the first time, or you’re caulking over somebody else’s mistake.

Every Juniper Windows Woodland Hills job is covered by the 365-Day Done Right Promise: if it’s not right, we make it right, parts and labor, for a full year. We’re part of the Relay Home Co. family, founded in 2001, and every technician showing up at your door is background-checked and in uniform. We answer the phone 24/7. And if a Therma-Tru replacement isn’t the right call, we have seven other lines on the shelf, including PGT, CGI, CWS, and ES Windows, so you’re never shoehorned into a compromise.

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