New windows and doors improve comfort, cut energy bills and add long-term value to your home. Meridian Windows and Doors San Francisco pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line homeowners arrive naming - the most impact certifications in the industry$$$
- More impact certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe value pick$$
- Vinyl systems built to strict wind codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Factory-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Why San Francisco Homeowners Choose Therma-Tru Windows & Doors
We provide Therma Tru in San Francisco, offering independent windows and doors service throughout the city-from full frame replacements in Noe Valley Victorians to threshold repairs on fog-battered Richmond District entry doors. Our crew has worked on Classic-Craft, Pulse, Smooth-Star, and Fiber-Classic units across the city for years, and we know which models hold up to salt air and which need early intervention. Meridian Windows and Doors San Francisco is not authorized by or affiliated with Therma-Tru. We’re an independent service provider, which means we answer to you, not to a manufacturer’s territory map. Call (831) 273-7126 for a written estimate before any work starts.
Why Trust Meridian Windows and Doors San Francisco for Your Therma-Tru Windows & Doors?
Our technicians know Therma-Tru door construction the way a mechanic knows a particular engine. Therma-Tru fiberglass slabs have specific corner pad profiles, compression gasket tolerances, and sill designs that differ from every other manufacturer. You can’t swap in a generic sweep and expect it to seat. Elliot Vance, owner of Meridian Windows and Doors San Francisco, spent the better part of two decades installing and retrofitting windows and doors across California before building this crew. He learned early that a 100-year-old San Francisco door frame and a modern fiberglass slab rarely agree on the first measurement. That experience shows up in the way we shim, seal, and square every Therma-Tru unit we touch. We use OEM-compatible parts, follow warranty-safe practices, and document every repair. The 365-Day Done Right Promise covers the work in writing. If it fails, we come back at no charge.
Common Therma-Tru Windows & Doors Problems We Fix in San Francisco
- Bottom sweep and weatherstrip degradation from salt air. In the Richmond and Sunset, the fog carries salt that eats rubber and nylon components faster than inland. We regularly replace bottom sweeps on Therma-Tru entry doors that have gone stiff, cracked, or pulled away from the slab, leaving a draft under the door. The fix is usually a new OEM sweep, but the real issue is choosing a material rated for coastal exposure.
- Glass insert seal failure in Classic-Craft oak and mahogany designs. The decorative glass inserts on Classic-Craft doors have a perimeter seal that breaks down over time. When it fails, you get interior haze between the panes, condensation, and a door that leaks heat. On a Noe Valley Victorian, our tech found a Classic-Craft entry door with failed glazing tape around the mahogany glass insert. Rather than replace the slab, we pulled the insert, cleaned the interior channel of salt haze, and reinstalled with OEM compression gasket, restoring the door’s R-value and killing the draft.
- Hinge-side alignment drift on heavy Smooth-Star units in Victorian-era frames. Smooth-Star doors are heavy fiberglass, and when they’re hung in a 100-year-old wood frame, the hinges settle unevenly. The door starts rubbing at the top corner or dragging at the bottom, and adjusting the hinges only buys a few months. The real fix is re-shimming the jamb to match the slab’s weight distribution.
- Threshold rot at the exterior seam. Fog moisture wicks up into the toe kick where the threshold meets the rough opening. We see this constantly in pre-1940 wood-framed homes. The Threshold rots first, then the subfloor beneath it. If caught early, it’s a threshold replacement. If ignored, it becomes a full frame replacement and possibly floor repair.
- Fiber-Classic astragal wear on double doors. The astragal (the vertical weatherstrip between double door panels) takes constant compression every time the doors close. On San Francisco homes with heavy use, the astragal flattens within a few years, letting wind and fog through the center seam. We replace it with OEM astragals matched to the exact slab thickness.
Therma-Tru Parts & Our Repair-vs-Replace Approach
We use OEM Therma-Tru replacement parts whenever available, including sweeps, sills, astragals, and glass inserts. Therma-Tru’s corner pads and compression profiles are unique to their slab designs, and generic parts leave gaps. When an OEM part is discontinued, we substitute aftermarket parts matched to the door slab’s exact thickness and camber. We’ll tell you straight if chasing rot on an old unit is throwing good money after bad. Sometimes our Window Replacement services for a full frame are genuinely cheaper than patching a threshold for the third time. Call (831) 273-7126 and we’ll give you a written price either way. The estimate is free.
Our Therma-Tru Service Process – Step by Step
- 1
Diagnosis. Our technician inspects the slab, frame, threshold, hinges, and weatherstripping. We measure the gap tolerances and identify what’s failing. For Therma-Tru units, this includes checking the corner pad alignment and compression gasket seating.
- 2
Written proposal. You get a line-item price on paper before any work begins. No door-knob renegotiation. The price holds.
- 3
Repair or replacement. We use OEM Therma-Tru parts where available, or matched aftermarket when discontinued. For full frame replacements, we square the opening to the slab, not the other way around.
- 4
Testing. We check the seal with a smoke pencil, verify the sweep contact, and test the lock and deadbolt. Then we walk you through the work before we leave.
- 5
Warranty. Every job is covered in writing by the 365-Day Done Right Promise. If it fails within a year, we return at no charge. That’s the whole point of writing it down.
Therma-Tru Products We Service & Install in San Francisco
We work on the full Therma-Tru entry door lineup Common to San Francisco homes: Classic-Craft (including oak and mahogany grain finishes), Pulse, Smooth-Star, and Fiber-Classic. Our focus is entry doors, full frame replacement, and energy-efficient upgrades. We stock common OEM sweeps, sills, and astragals locally so mid-size repairs don’t wait on a parts truck from the Midwest. If a glass insert needs to be ordered, we tell you the lead time before you approve the work.
We Also Service These Brands
We’re not tied to a single manufacturer. Meridian Windows and Doors San Francisco installs and services PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, and ViewLux as well. Eight lines in the portfolio means we spec the right door for the job, not the one we happen to stock.
FAQs – Therma-Tru Windows & Doors Service in San Francisco
Usually, yes. The fogging means the perimeter seal around the glass insert has failed. We remove the insert, clean the interior channel, replace the compression gasket with OEM material, and reinstall. The slab itself is almost always fine. Call (831) 273-7126 for a written quote.
Fiberglass expands and contracts with temperature and humidity. On foggy mornings, the moisture swells the fiberglass just enough to bind against a tight jamb. If it’s a new issue, the door may simply need re-shimming. If it’s been a chronic problem, the frame has likely drifted. We inspect the jamb, identify the binding point, and re-shim to restore proper clearance. Call (831) 273-7126 to schedule a diagnostic visit.
Yes. The Pulse series uses a kerf-mounted weatherstrip that slides out of the jamb channel. We match the new strip to the original profile and R-value. No jamb replacement needed unless water damage has reached the wood itself. Call (831) 273-7126 for a free estimate.
Not necessarily. The problem is usually the threshold cap or the bottom sweep, which are replaceable components. If the toe kick below the threshold has rotted from fog moisture, you may need a sill replacement or a new frame. We inspect before we quote either way. Call (831) 273-7126.
We identify the original model line and measure the insert opening precisely, then match the camber and corner radius to the available OEM or matched aftermarket glass. Older Therma-Tru inserts have specific locking mechanisms that vary by year, so we verify compatibility before ordering. Call (831) 273-7126 with your model number if you have it.
Simple repairs like a bottom sweep or weatherstrip replacement typically run $180 to $400 installed. Glass insert seal repair on a Classic-Craft door ranges from $350 to $700 depending on insert size and damage. Full frame replacement entry door projects in San Francisco start around $2,800 and go up from there based on the door model, frame condition, and whether we’re matching a Victorian opening that’s anything but square. Call (831) 273-7126 for an exact line-item quote. Estimates are free.
Book Your Therma-Tru Service in San Francisco, CA
If your Therma-Tru door is drafting, sticking, fogging, or showing fog rot at the threshold, call us. We’ll schedule a diagnostic visit, put a written price in front of you, and fix it right. Measure twice, order once. The window doesn’t care about your schedule. Call (831) 273-7126 for a free estimate.
Written by Elliot Vance, Owner at Meridian Windows and Doors San Francisco, serving San Francisco since 2009.
Six Reasons Homeowners Choose Meridian Windows and Doors San Francisco
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.