Carlsbad Quality Windows is North County's premier expert in patio door replacement, specializing in sliding patio doors, hinged French door pairs, and rebuilt sill pans. We offer fiberglass and vinyl two-panel sliders and out-swing garden doors with multipoint locks.
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Our team provides tear-out and replacement inside the existing opening, delivering doors that glide, lock and seal for homes and matched door hardware for both residential and commercial projects. With 13 years in business and a 2-year workmanship warranty behind every door we hang, we've completed more than 1,730 projects, from a single drafty garden door to whole elevations of sliders on condominium buildings.
From worn steel rollers on a pitted aluminum track to a new threshold that sheds winter rain, our team handles every detail. Serving Carlsbad and neighboring Harmony Grove, Lake San Marcos and Del Mar, we water test every sill before the trim goes back on, so the leak leaves with the old door.
Why Carlsbad Quality Windows
Rachel, master-planned village, Harmony Grove
2010s home in the master-planned village with a builder slider that dragged and let dust in
Margaret, artificial lake, Lake San Marcos
Lake-facing home with a drafty wood French door pair onto the deck
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
Rachel lives in the master-planned village in Harmony Grove, in a 2010s home whose builder slider dragged on its track and let dust in at the sill. We set a fiberglass two-panel slider on a new sill pan, an estimated $2,600 to $3,600 job finished in an estimated 6 to 8 hours, and the door now glides with one finger and seals at the bottom.
Margaret's lake-facing home on the artificial lake at Lake San Marcos had a drafty wood French door pair onto the deck. We replaced it with a fiberglass French door pair on a multipoint lock and a low threshold, an estimated $2,200 to $3,400 project over an estimated 6 to 8 hours, so the pair seals tight and is easy to step through.
Click or drag the window to open it.A picture window is fixed glass and does not open.
Window style
Frame material
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
Pick a window style and a frame material to see what the windows next to a new patio door typically cost, how long each frame lasts and its usual warranty. Most owners, from Fairbanks Ranch estates to Rancho Santa Fe Village cottages, keep the door and its flanking windows in one frame material so the wall reads as one.
Two-panel glass slider on a new sill
Hinged glass pair with multipoint lock
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
A slider that sticks almost always has worn steel rollers riding on a corroded aluminum track, and near the coast the track is the bigger half of the problem. Salt air from Leucadia to Carlsbad Village pits mill-finish aluminum, and the marine layer keeps that track damp most summer mornings.
Leaks start lower, at the sill, where water that gets past a tired weatherstrip runs to the lowest point, and with no working sill pan underneath it soaks into the subfloor and the slab edge. That is why we never set a new door on the old sill: we pull it, check the framing below, and seal a sloped pan in before the new frame goes down.
Builder sliders in Harmony Grove Village and Bressi Ranch fail differently, with light vinyl frames that flex and let dust past the interlock.
A slider saves floor space and costs the least per opening, a French door pair gives the widest single step-through with a classic look, and a multi-slide wall opens the whole room when the budget and the header allow it.
| Door type | Est. installed price | Est. time on site | Floor space needed | Best fit |
|---|---|---|---|---|
| Sliding patio door | Est. $1,800 to $4,000 per door | Est. 6 to 8 hours | None, panels stay in the frame | Tight patios and busy family rooms |
| French door pair | Est. $1,800 to $4,000 per pair | Est. 6 to 8 hours | A swing arc inside or out | Older Old Del Mar and Rancho Santa Fe homes |
| Multi-slide glass wall | Est. $5,000 to $10,000 per opening | Est. 1 to 2 days | A pocket or stack side | Coastal great rooms in Cardiff-by-the-Sea |
An out-swing French pair suits a coastal home in Solana Beach or Del Mar Heights, because wind-driven rain pushes the doors tighter into their seals instead of forcing them open.
Patio door replacement in Carlsbad is estimated at roughly $1,800 to $4,000 per door, and the frame material, the glass package and whether the sill and subfloor need repair move the price most. A vinyl two-panel slider in a standard 6-foot opening sits near the low end, while a fiberglass French door pair with a multipoint lock lands toward the top.
Inland jobs often run lower than the coast: Rachel's slider in Harmony Grove and Margaret's French pair at Lake San Marcos both came in at an estimated $2,200 to $3,600, because neither opening needed a bluff-grade DP rating or salt-air hardware.
When the old pan has failed and the subfloor is soft, rebuilding it typically adds a few hours inside the same estimated 6 to 8 hour visit, and we price it on its own line so you can see it.
These door prices are estimates for Carlsbad homes and can change once we open the old sill and check the framing. Your written quote after the measure sets the final price and the install date.
Every glass panel in a patio door must be tempered under CBC R308, and so must any window glass within reach of the door's swing or beside its edge. A big-box door swapped in by hand usually passes that test, because the factory tempers it, but the side window next to it often does not, and that is the panel that fails a Carlsbad inspection.
The second DIY mistake is skipping the sill pan. Setting a new frame on the old slab edge without a sloped pan sends the next winter's rain straight into the floor, which is exactly the leak the new door was bought to fix. The third is the permit: a like-for-like door swap still falls under Title 24 here, so the new unit's U-factor and SHGC are checked against its NFRC label before the city signs off.
Fiberglass is our default door frame within a few miles of the water, the same frame that holds up on our salt-air fiberglass windows page, while inland owners comparing budgets often pair a vinyl slider with vinyl replacement windows on the same wall.
The crew lead who measures your opening is the one who hangs the new door, so nobody guesses at a sill height taken by someone else, and every door carries our 2-year workmanship warranty on every installation, and the maker's warranty typically adds 20 years on the glass, so meet the team before your estimate.
We replace patio doors across a 30-mile radius of Carlsbad, from Calavera Hills to Harmony Grove homes like Rachel's, lake-facing doors in Lake San Marcos and patio doors in Del Mar. Encinitas, Poway, Bonsall and Elfin Forest are on our full service area list.
When one door is not enough, owners move up to a folding or multi-slide door wall or floor-to-ceiling glass walls, and many replace the rest of the house with retrofit windows in the same visit. Hinged doors have a page of their own: our French door installation for inswing and outswing pairs covers astragals, multipoint locks and converting a slider opening.
A sliding patio door or a French door pair is typically estimated at $1,800 to $4,000 installed, and your written quote sets the final price after the measure.
Most doors, from Elfin Forest to Bonsall, take an estimated 6 to 8 hours on site, so the opening is closed and locked the same day.
Choose a slider when floor space is tight and a French pair when you want the widest step-through and room for the doors to swing.
Usually not for long, because most slider leaks in New Encinitas and Eden Gardens tracts start at a failed sill pan under the frame, which only a tear-out can reach.
Yes, a door replacement typically needs a Title 24 permit in Carlsbad, and our crew pulls it and books the inspection.
Yes, either swap fits most existing openings, including the narrow ones in Old Encinitas cottages, as long as the header and the floor height allow the new frame.
Yes, we order the door in the same frame material and color as the windows beside it so the wall reads as one.
Request a free estimate, and we will measure the opening, check the sill and the subfloor and send a written, itemized quote.
The process
We check every frame, sill and the stucco around it, then laser-measure each opening for the unit that goes in it.
Frame material, glass package, label values and install method arrive in writing before anything is ordered.
Each window is set on a sloped sill pan, flashed and sealed, with the NFRC sticker left on for the inspector.
We open and lock every window and door with you, and the city signs off the Title 24 permit.
Services
Where we work
Homeowners get a free measure at the house. Boards, managers and contractors can send plans or an opening count for a bid.
Calls only, we do not receive text messages.
