Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterFast, Reliable Door Installation Across Sunnyvale
Door installation in Sunnyvale usually runs between $900 and $4,800 depending on the door type, the condition of the opening, and whether the home is a standard tract ranch or an Eichler with structural post-and-beam bays. Most entry and storm doors go in same-day once the unit arrives; sliding glass replacements on Eichler bays take longer because the rough opening has to be measured to the sixteenth of an inch. We’re Westlight Windows & Doors, and we’ve been doing this since 2009. If you’re in Sunnyvale and the old slider sticks, the front door draft comes through the jamb, or you’re simply tired of looking at pitted aluminum, call (903) 354-7134 and we’ll give you a straight written price before anything gets ordered.
Why Westlight Windows & Doors Is Sunnyvale’s Preferred Door Installation Company
Sunnyvale has a housing stock that most door companies don’t actually know how to work on. The Eichler tracts between El Camino Real and Wolfe Road, the 1950s ranches off Mary Avenue, the postwar subdivisions around Raynor Park, the newer infill near Lawrence Expressway and Lakewood. Each one has different framing, different thresholds, different failure modes. Owen Satterfield and the crew at Westlight have measured, cut, and set doors in all of them. We know which Sunnyvale Eichler bays are structural before we put a saw to the jamb, and we know what a Title 24 inspector on a Sunnyvale permit is going to flag. That’s not something you learn from a manufacturer’s installation PDF.
Every job gets a written price before work begins, a real arrival window, and a written guarantee handed over when the door is set. If something isn’t right within a year, we come back and fix it. No charge. The 365-Day Done Right Promise is printed on the same sheet as the price, because Owen believes a handshake doesn’t mean much if it isn’t written down.
Storm Door Installation in Sunnyvale
Storm Door Installation in Sunnyvale is about adding a second layer of protection to the front or side entry of a 1950s through 1970s home, where the original door is often a hollow-core wood unit that’s warped or swollen from decades of marine-layer humidity. We install storm doors with thermal-break aluminum frames, full-view or half-view glass, and adjustable bottom sweeps that actually seal against the existing threshold. A typical storm door installation in Sunnyvale runs $900 to $1,800, depending on glass package and whether the existing door frame needs reinforcement or re-shimming.
Framing and Threshold Work
On older Sunnyvale homes, the original door frame was installed before the slab fully settled. We check the threshold for rot, re-shim the jamb so the storm door hangs square, and replace any weatherstripping that has hardened and lost its seal. If the sub-sill under the threshold is soft, we open it up and replace it before the new door goes in, because hiding a bad sill under a new storm door just moves the failure six months down the road.
Glass and Screen Packages
Most Sunnyvale homeowners choose a full-view storm door with low-e glass to cut the afternoon sun on west-facing entries, or a retractable screen package so the ocean breeze actually moves through the house. We install both, and we’ll tell you which makes more sense for the way your entry faces. Call (903) 354-7134 for a written price on your specific door.
Sliding Glass Door Installation in Sunnyvale
Sliding Glass Door Installation in Sunnyvale almost always means replacing an original aluminum unit from the 1950s or 1960s, and on Eichler homes that slider is often set into a structural post-and-beam bay. This is not a standard swap. A typical sliding glass door replacement in Sunnyvale runs $2,200 to $4,800, with Eichler bays on the higher end because the door must be custom-width, the threshold pan has to be rebuilt over the radiant slab, and the framing inspection is stricter.
Custom-Width Eichler Bay Sliders
We were called to a 1962 Eichler on a post-and-beam bay in Sunnyvale to replace a failed original aluminum sliding glass door that had lost both seals and was pitting from years of salt-laden marine air. Our tech found the threshold had been shimmed with untreated wood over the radiant slab, and the vertical post had a hairline crack from a previous installer who tried to widen the opening for an off-the-shelf unit. We sourced a custom-width thermal-break aluminum slider with low-e insulated glass, sistered the post, installed a new waterproof threshold pan, and passed the city’s framing inspection without notching the structural bay. That’s the difference between a door company and a company that knows Sunnyvale.
Track Replacement and Weather Sealing
The old aluminum tracks on these sliders wear thin, fill with grit, and the rollers grind until the door won’t move. We replace the track, upgrade the rollers to sealed bearing units, and set the door on an adjustable stainless steel threshold cap. Then we flash and seal the rough opening so the next marine-layer fog bank doesn’t find its way inside.
Trusted Brands We Service in Sunnyvale
We carry and install doors from Therma-Tru, PGT, and ViewLux, so Sunnyvale homeowners aren’t forced into whatever one brand the installer happens to stock. PGT’s impact-rated line makes sense for west-facing sliders that catch the full afternoon sun and storm wind off the bay. ViewLux gives us a strong thermally broken aluminum slider option for Eichler bays where the original opening is five inches wider than any standard unit. And Therma-Tru entry doors cover the traditional front-door look most of our Sunnyvale customers want. Because we’re a Door Installation company with eight manufacturer lines, we match the product to the opening and the exposure, not the other way around.
Common Door Installation Problems We See in Sunnyvale Homes
- Pitted and corroded aluminum frames. Salt-laden marine-layer air from the bay accelerates oxidation on bare aluminum door frames and hardware. The pitting starts as cosmetic, then eats through the jamb and breaks the seal. We see it on original sliders throughout the Eichler tracts and the 1960s ranches off Homestead Road.
- Structural bays that a previous installer notched. The vertical wood posts in Eichler bays carry roof loads. When someone notches or widens a jamb to squeeze in a standard-width door, the load transfers and the roof sags over time. Sunnyvale inspectors look for exactly this on framing inspections, and they fail it.
- Failed waterproofing hidden behind old sliders. Opening the wall around a 1960s aluminum slider in Sunnyvale reveals undersized framing, rotted sill plates, and missing flashing. If the installer just re-covers it without inspection, the new door leaks. We open, inspect, and replace before anything gets re-covered, with allowances written into the contract.
- Single-pane glass that won’t pass inspection. Title 24 requires dual-pane low-e glazing on every replacement door with glass in Sunnyvale. Homeowners sometimes push for single-pane to save money. It won’t pass final inspection, and the permit won’t close. We’ll tell you that before you pay for it.
Pricing for Door Installation in Sunnyvale, CA
Here are the ranges we write into contracts for Sunnyvale work: entry door replacements run $1,200 to $3,400. Storm doors run $900 to $1,800. Sliding glass door replacements run $2,200 to $4,800, with custom-width Eichler bay sliders on the upper end. French and double door installations run $2,500 to $5,500. What moves the number: framing condition, whether the opening is standard or custom width, the glass package, and whether the permit inspection flags anything that requires re-framing. We write allowances for hidden work into every contract before we start, so a discovery during tear-out doesn’t rewrite the price at the door. You’ll see the number in writing first. Call (903) 354-7134 for a free estimate.
We Also Serve Cities Near Sunnyvale
Our crews cover Sunnyvale and the surrounding South Bay, including Mountain View, Santa Clara, Cupertino, and Los Altos. If you’re on the border near Central Expressway or El Camino and you’re not sure which city you’re technically in, don’t worry about it. We handle the permits and the inspections either way.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Door Installation in Sunnyvale
Because Eichler post-and-beam bays are structural, the vertical posts carry roof loads, and the rough opening is rarely a standard width. You can’t notch the bay to fit an off-the-shelf unit without risking roof sag and failing Sunnyvale’s framing inspection. The door has to be custom-width, the threshold pan rebuilt over the radiant slab, and the framing work inspected separately. That’s more labor and more care than a standard tract home, and the price reflects it. Call (903) 354-7134 and we’ll give you a written price for your specific bay, not a range pulled from a brochure.
In a standard ranch, sometimes yes, if the wall isn’t load-bearing and the header can be reframed. In an Eichler bay, no, not safely, because the posts are structural and widening the jamb transfers roof loads. We’ll tell you which home you have and what’s actually possible. Call (903) 354-7134 for an honest assessment before anyone takes a saw to the wall.
Thermal-break aluminum frames with a factory-applied finish hold up best, because the thermal break stops condensation and the finish resists the salt oxidation that pits bare aluminum. Fiberglass also works well for entry doors since it won’t warp from marine humidity. We stock both. Call (903) 354-7134 and we’ll match the material to your exposure.
If it’s pitted enough to break the seal, replace it. Repairing a corroded frame with sealed bearing rollers and a new track doesn’t fix the air leak and the frame will keep deteriorating. Replacement costs $2,200 to $4,800 in Sunnyvale, and the new door will meet Title 24 instead of fighting it. Call (903) 354-7134 for a written price.
Yes, replacing an exterior door in Sunnyvale requires a permit, and it triggers a Title 24 energy compliance check plus a framing inspection if the opening is modified. On Eichler homes the inspector will look at the structural bay. We pull the permit, schedule the inspection, and pass it. That’s part of the written price. Call (903) 354-7134 to get the process started.
Get Your Written Price Before the Work Starts
If you live in Sunnyvale and you’re ready to replace a door, or you want to know exactly what it will cost before you commit, call (903) 354-7134. A live person answers, 24 hours a day. We’ll schedule a time to measure your openings, show you door options from PGT, Therma-Tru, and ViewLux, and put a written price in your hands before any work is ordered. The Kingswell Guarantee applies to every job: written price, real arrival window, clean job site, and a written guarantee on the completed work. If it’s not right within 365 days, we fix it. No charge.
Written by Owen Satterfield, Owner at Westlight Windows & Doors.