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Therma-Tru Windows & Doors: The San Francisco Owner’s Guide
If you have a Therma-Tru door or window in San Francisco that’s binding, leaking air, or sagging on its hinges, we can match the part and install it correctly the first time. A hardware swap or glass insert replacement usually runs $470 to $2,125 in San Francisco, depending on the model and what’s actually failed. Most owners notice the problem as a door that scrapes the threshold or a window that won’t latch, but the root cause is rarely the slab itself. It’s almost always a worn hinge set, a failed sweep, or a weathered seal and once you know which, the fix is surprisingly straightforward.
We’re Elmstead Remodeling San Francisco, a Cedarwell company, and we carry Therma-Tru compatible parts along with named-brand materials from KraftMaid, Cambria, and Silestone. We’re an independent service provider, not affiliated with Therma-Tru, which means we stock what actually fails on these units in California weather and we don’t have to sell you the whole door to fix a hinge.
Which Therma-Tru Models This Applies To
Therma-Tru builds three door lines we work on regularly in San Francisco: the Classic-Craft series (fiberglass, wood-grain texture), the Smooth-Star series (smooth fiberglass, often painted), and the Pulse series (their premium line). Windows in the Therma-Tru catalog, including sidelights and transoms around entry doors, use the brand’s own framing and weatherstripping profiles, and that’s where compatibility gets tricky. A 2008 Classic-Craft and a 2021 Pulse may look similar from six feet away, but the hinge prep, sweep channel, and glass insert dimensions are often different. We identify parts by the model number on the hinge edge of the door slab, usually a paper label or a stamped code near the bottom hinge. If that label is gone, we go off the slab thickness and the hinge mortise pattern, which narrows it down quickly.
For most San Francisco homes, OEM Therma-Tru hardware is the right call because the hinge spacing and screw patterns are already dialed in. There are quality aftermarket equivalents for sweeps and weatherstripping that work fine, but we tend to use OEM on hinge sets and locking hardware. It’s the difference between a door that closes like it did in 2006 and one that needs the striker plate shimmed twice.
Styles & brands we work with
Signs Your Therma-Tru Windows & Doors Is Failing
- Door drags or scrapes at the threshold. This is usually a worn bottom sweep or a hinge set that has settled in the jamb. In San Francisco, where doors get opened and closed against damp bay air for decades, the screws holding the hinge leaves to the jamb slowly wallow out. The slab tilts, and the drag starts. This fix is normally hinges and a sweep, not a new door.
- Visible daylight or draft at the corners. Weatherstripping on Therma-Tru doors sits in a rubber channel that degrades over time, especially on west-facing entries where San Francisco’s afternoon salt air works on it daily. The seal flattens, then cracks, and the draft comes before the light. Replacing the seal sets most of these right.
- Sidelight or transom window fogged between panes. This is a failed insulated glass unit. The gas between the panes escapes, condensation gets in, and no amount of cleaning fixes it. Therma-Tru uses model-specific glass packs with particular dimensions and exterior trim profiles, so we measure and order to match.
- Lock or multi-point hardware is stiff. The greased points inside Therma-Tru locking hardware dry out, then corrosion starts, especially in the fog-belt neighborhoods near the Sunset District and the Richmond. A jammed multi-point lock on a Classic-Craft is almost always wear plus lack of maintenance. Sometimes a hardware rebuild saves the door.
- Door no longer closes flush at the top corner. This points to hinge wear, not a warped slab. Fiberglass doors rarely warp the way wood doors do, but the hinges do wear, and when one top hinge goes, the slab drops just enough to break that even line along the top of the jamb. We see this on double-door entries in San Francisco’s older Noe Valley homes where the secondary leaf is used as the main door.
See the difference
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After
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After
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AfterReplacement Cost & What’s Included
Here’s what Therma-Tru windows and doors parts replacement runs in San Francisco:
| Service | Installed Price Range |
|---|---|
| Weatherstripping replacement (door sweep, seal, gaskets) | $470 – $825 |
| Hinge replacement (set of 3 hinges, jamb-side repair) | $470 – $1,180 |
| Multi-point lock or deadbolt hardware replacement | $590 – $1,420 |
| Sidelight or transom glass unit replacement | $710 – $2,125 |
| Single door slab replacement (installed, Therma-Tru-compatible) | $2,360 – $5,310 |
| Full entry door system replacement with new jamb and threshold | $5,310 – $11,800 |
These ranges reflect San Francisco labor rates and the specific parts. The price you get from us is written down before we start, and it doesn’t move once the crew arrives. If a hinge set needs a jamb repair plate, you see that line item before we cut anything. Every parts replacement we do is covered under our 365-Day Done Right Promise. If it’s not right after the job is complete, we make it right.
DIY or Call Us?
You can check a few things yourself: look at the hinge screws to see if they’re pulling out, run a dollar bill along the closed door’s weatherstripping to find a dead spot, and check the sweep on the bottom for cracks. What you shouldn’t do is remove a multi-point lock or attempt an insulated glass replacement. Those systems are under spring and cam tension, and getting one apart without springing the hardware is hard for anyone who doesn’t do this weekly. Glass units also come out against exterior trim that cracks if pried the wrong way in San Francisco’s damp, painted-in place conditions. If it’s more than a hinge screw, call (831) 480-4497 and we’ll look at it. The estimate is free.
FAQs
Therma-Tru fiberglass door slabs themselves typically last 25 to 35 years in San Francisco, though hardware, weatherstripping, and glass units typically need replacement every 10 to 15 years. The slab rarely fails. The parts around it wear first, especially in fog-heavy neighborhoods. Call (831) 480-4497 if you want us to look at your specific entry, and we’ll tell you what’s got life left in it.
Yes, most Therma-Tru doors in San Francisco can be repaired with new hardware, seals, or glass rather than a full replacement. We usually replace slabs only when the skin is damaged beyond surface repair or the core has taken on water. We’ll always show you the written cost to repair versus replace before you decide, and the estimate is free.
A hinge, sweep, or weatherstripping replacement typically takes 1 to 2 hours on site, and a glass unit replacement usually runs 1 to 3 hours. If the jamb needs a repair plate or the trim is stubborn, we’ll schedule the time before we start. Call (831) 480-4497 and we’ll tell you based on your exact model.
We keep common Therma-Tru compatible sweeps, hinge sets, and weatherstripping in our San Francisco stock, and most model-specific hardware arrives within 3 to 7 business days. Glass units and specialty hinges are ordered to match your model, and we’ll give you the lead time before anything is approved. Call (831) 480-4497 for an exact schedule.
If you have a Therma-Tru door or window in San Francisco that’s dragging, leaking air, fogging between the panes, or just not latching like it used to, call (831) 480-4497 for a free estimate. We’ll name the part, write down the price, and leave your entry working the way Therma-Tru intended.
Written by Graham Stein, Owner, Elmstead Remodeling San Francisco at Elmstead Remodeling San Francisco, serving San Francisco and nearby areas.
