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 Replacement Across Glendora
Door replacement in Glendora typically runs $1,200 to $4,800 for a standard exterior entry door, installed, with most jobs completed in one to two days once materials arrive. If you’re off Sierra Madre Ave or up in the foothills above Foothill Blvd, your door is working harder than most. Juniper Windows & Doors has crews that know Glendora’s mix of 1950s ranches and hillside custom homes, and we’ll give you a written price before any work starts. Call (682) 281-2168 to schedule a free estimate.
Why Juniper Windows & Doors Is Glendora’s Preferred Door Replacement Company
Glendora homeowners don’t have time for a contractor who quotes vague numbers and then adjusts the invoice at the door. That’s why our process starts with a written price. Every job, no exceptions. Sean Mackey, who leads our team, made that non-negotiable when Juniper joined the Relay Home Co. family back in 2001. The result: when a Glendora homeowner books a door replacement, they know exactly what it costs before we touch a screwdriver.
Our crews show up in uniform, background-checked, and you’ll get a live arrival time you can track on your phone. Not a four-hour window. Not a “we’ll be there sometime.” The Relay Visibility Guarantee puts before-and-after photos and a digital invoice in your hands. Glendora customers constantly tell us the transparency is what sold them. It’s just a better way to run a door replacement.
We answer our phone 24/7. A real person picks up. When you call about a swollen jamb off Ada Ave or a threshold leak near Glenkirk Park, you’ll get someone who can actually help.
Door Installers in Glendora
Door Installers in Glendora handle what a handyman can’t: a full tear-out, reframing the rough opening, setting the new door square and plumb, flashing it correctly, and finishing the interior trim. In Glendora, this work often lands on homes built before 1970, meaning the old rough opening is rarely square. A drop-in replacement won’t fit. You need someone who rebuilds the jamb and sill, not someone who shims and hopes. Expect $1,200 to $4,800 for a standard exterior door, materials and labor included.
Entry Door Replacement
Front doors in Glendora take direct afternoon sun and, depending on your street, real wind off the San Gabriel foothills. We set Therma-Tru and PGT doors with proper sill pan flashing so water never finds the subfloor. A new entry door also means new weatherstripping and a threshold that actually seals.
Patio and Back Door Replacement
Back doors facing the foothills see more temperature swing than front doors. We install insulated doors with low-E glass that match the solar load of your existing windows, so your kitchen doesn’t turn into a greenhouse in July.
Door Contractors in Glendora
Door Contractors in Glendora pull permits when the scope requires it. In Glendora specifically, that answer changes depending on which side of the 210 you’re on. Flat, older-grid homes south of the freeway generally follow standard LA County CBC checks. But hillside properties above Sierra Madre Ave can trigger extra slope-stability review. A header replacement, a new transom opening, or an egress change pulls the job into plan check. We handle that paperwork for you. A simple slab door swap without structural changes stays permit-free, and we’ll tell you the truth either way.
Permit-Ready Door Replacement
When your Glendora door job needs a permit, we draw the plans, submit to the city, and schedule inspections. You don’t chase paperwork. We do. Every inspection passed gets documented in your job file.
Structural Door Openings
If you want a wider entry or a new sidelite, the header has to be recalculated and rebuilt. We’ve done this on ranches off Route 66 and on newer homes near the Glendora Country Club. It changes the price, and we tell you exactly how much before the wall gets opened.
Trusted Brands We Service in Glendora
We stock parts for PGT, Therma-Tru, and ViewLux door systems, which means a Glendora homeowner isn’t waiting two weeks for a hinge or a sill cap. PGT doors carry impact-rated glass built for wind-borne debris, a real consideration for foothill homes that get pushed around in Santa Ana wind events. Therma-Tru is our go-to for classic entry doors with the warm wood look that fits Glendora’s ranch and Craftsman stock. ViewLux gives us the slim-sightline modern option for homeowners who want more glass and less frame. You tell us what you need the door to do, and we’ll put the right product on it.
Common Door Replacement Problems We See in Glendora Homes
- Sticking doors on slab homes: Glendora’s older flat-grid neighborhoods sit on slab foundations that shift with our dry-wet seasonal swings. An out-of-square rough opening means the door binds at the top corner. We reframe the jamb rather than sanding the door down to a wedge.
- Threshold rot behind stucco: Single-layer stucco walls wick moisture if the sill pan was never flashed. By the time the interior paint bubbles, the jamb legs are usually gone. We rebuild the sill and flash it properly.
- Foothill wind pressure: Homes above Sierra Madre Ave get hit with real wind. A hollow-core slab door flexes and leaks air. We upgrade to solid-core or insulated doors that stay put when the Santa Anas come through.
- Original 1960s doors with single-pane glass: That original door off Ada Ave is losing your cooling every afternoon. A new door with low-E insulated glass cuts the solar gain and quiets the room.
Pricing for Door Replacement in Glendora, CA
Here’s the honest math for Glendora. A standard exterior door replacement runs $1,200 to $2,800. Step up to a Therma-Tru or PGT door with decorative glass and a new sidelite, and you’re at $3,200 to $4,800. Reframing a rough opening adds $300 to $700 depending on what we find. A new header on a widened opening with plan check and inspection pushes toward $5,000 to $7,500. What moves the number once we open the wall: rot behind the jamb, an undersized header, or a floor plate that needs replacement. We’ll tell you the exact price in writing before work starts, not after. Call (682) 281-2168 for a free estimate. You’ll get a fixed number, not a range that inflates later.
| Door Replacement Project | Typical Glendora Cost |
|---|---|
| Standard exterior door, slab swap | $1,200 – $2,800 |
| Entry door with decorative glass | $2,200 – $3,800 |
| Entry door with sidelite | $3,200 – $4,800 |
| Header rebuild with plan check & inspection | $5,000 – $7,500 |
| Jamb reframe & sill rebuild (rot repair) | +$300 – $700 |
Every Door Replacement project gets a written price before work begins, and that number is covered by our 365-Day Done Right Promise: parts and labor, in writing, for a full year.
We Also Serve Cities Near Glendora
If you’re one street over in Azusa, San Dimas, Covina, or La Verne, we run crews there too. The same written pricing, the same live arrival tracking, the same Glendora level of service. Your address stays yours; the process doesn’t change.
Serving Glendora, CA - Our Local Coverage Area
We’re based in the Glendora 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 Replacement in Glendora
A like-for-like door swap with no structural changes and no header modification generally does not require a permit in Glendora. Once you alter the rough opening, replace the header, add a sidelite, or change an egress path, LA County’s CBC checks kick in, and hillside homes above Sierra Madre Ave may need additional slope-stability review. When we scope your door replacement, we’ll tell you exactly which path applies to your address. Call (682) 281-2168 and we’ll look up your parcel while you’re on the phone.
The rough opening on pre-1970 Glendora homes is rarely square. Slab foundations move with our dry-wet seasonal shifts, and the jamb drifts with them. What feels like a door problem is usually a framing problem. We reframe the jamb and set the new door plumb, so it latches with a confident click, not a shoulder shove. On a 1962 ranch off Ada Ave near Glenkirk, our crew fixed exactly this on an original wood entry that had swelled and stopped closing. The new Therma-Tru door clicked shut on the first try and the front room ran noticeably cooler that summer.
Yes. If your Glendora windows already run low-E insulated glass, we’ll spec your new door with matching glass so the solar load is consistent across the wall. That matters on west-facing exposures near Foothill Blvd where afternoon sun is unforgiving. We’ll share the U-factor and solar heat gain numbers with you in the estimate, not just hand you a brochure. Exact glass matching is part of the written quote you get before work starts.
Therma-Tru is our standard for entry doors that need to look like wood and perform like modern fiberglass. PGT is our pick for foothill homes that need impact-rated glass. ViewLux goes in when a Glendora homeowner wants a modern look with slim sightlines. We carry parts for all three locally, which means faster turnarounds and fewer second trips. If a repair ever fails within a year, we’ll come back free, as part of the 365-Day Done Right Promise.
A standard slab swap takes one day. If we’re reframing the jamb and rebuilding the sill, count on two. A custom header with plan check and inspection can stretch to two to three weeks, because the city’s review clock runs its own schedule and we don’t control it. What we do control is telling you the calendar up front and hitting it. When you book, you get a live arrival time and a timeline in writing. Call (682) 281-2168 for a free estimate and a straight answer on timing.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Glendora with written-price door replacement and the 365-Day Done Right Promise.