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AfterFast, Reliable Door Replacement Across Montclair
Door replacement in Montclair, CA typically runs $450 – $1,400 for a standard interior slab swap and $2,800 – $6,500 for an exterior entry door with framing work, and most jobs are completed in one to two days once materials arrive. That’s the honest range before anyone opens your wall. We serve the flatland ranch homes north of the 10 Freeway and the two-story tracts climbing toward the San Gabriel foothills, so we know what changes once the old jamb comes out and the framing underneath tells the real story. Call (682) 281-2168 for a written line-item estimate before any work begins.
Our Door Replacement team has walked Montclair homes from the Arrow Highway corridor up to the hillside streets around Mills and Ramona. That local time in the field matters, because door work here is never the same job twice. A 1950s ranch entry is a straight swap. A 1980s two-story tract entry with a narrow header and a stucco face is a different animal entirely.
Key Takeaways
- Interior door slab replacements in Montclair: $450 – $1,400 installed, depending on material and hardware.
- Exterior entry doors with jamb and threshold work: $2,800 – $6,500, more if the header needs reframing on a two-story home.
- Every quote is written, line-itemed, and locked before work starts. No change orders appear at the door.
- Rotted jambs are common in Montclair’s older ranch homes. We handle frame repair as part of the same visit.
- Sean Mackey leads the Montclair door replacement crew, and the 365-Day Done Right Promise covers every installation in writing.
Why Juniper Windows & Doors Is Montclair’s Preferred Door Replacement Company
We’re part of the Relay Home Co. family, founded in 2001, and our Montclair work is backed by a simple promise: 365 days, parts and labor, in writing. If the door sag, hinge, weatherstrip, or lock alignment is not right a year later, we come back and make it right. Montclair homeowners tell us the same thing on nearly every job: they called a few contractors, got a ballpark range over the phone, and then watched the number climb once work got underway. That does not happen with us, because the price is fixed on paper before we order a single hinge.
When you book with us for door replacement in Montclair, you get the Relay Visibility Guarantee: a live arrival time you can track from your phone, before-and-after photos of every phase, and a digital invoice you can pay from a link. You’ll also know exactly who is walking through your door. Our technicians are background-checked and uniformed, and a real person answers the phone 24/7, no call center maze. Need to reach us about a quote for your Montclair home? Call (682) 281-2168.
We do not do kitchens, roofs, or general remodeling. We do windows and doors, and that narrow focus means the framing, flashing, and fit questions that make or break a door install are things we handle every week, not things we Google.
Door Frame Repair in Montclair
Door Frame Repair in Montclair is the hidden half of most replacement jobs, because the original wood jambs in the 1950s and 1960s ranch homes north of the 10 Freeway have been settling, swelling, and getting kicked for sixty-plus years. When we pull the old slab, the jamb is often out of square by an eighth to a quarter inch, and no new door will seal properly against that. Fixing the frame means replacing the side jambs, head jamb, and threshold with pressure-treated stock, re-shimming everything to level and plumb, and resetting the weatherstrip so it compresses evenly around the door. In Montclair, door frame repair with a new slab typically runs $900 – $2,200 when the framing itself is sound but the jamb and threshold have failed.
We see two jamb failure patterns repeating across Montclair. The sections below walk through both.
Rotted Sill Pans and Thresholds
On west-facing entry doors, the afternoon sun and Santa Ana-driven rain beat against the threshold for years. The sill pan underneath the threshold eventually rots, the subfloor underneath the jamb softens, and the door starts dropping at the latch side. By the time the deadbolt no longer lines up with the strike plate, water has already been in the wall cavity for a while. We pull the threshold, rebuild the sill pan with proper flashing, and reset the jamb before we hang the new door.
Out-of-Square Openings in Ranch Homes
The older ranch homes in Montclair settle over time, and an entry opening that measures 36 inches at the top can measure 36 and 3/8 at the bottom. A new slab installed without correcting for that will bind at the top hinge or leave a light gap along the latch side. We re-shim the frame and trim the opening as needed so the new door swings cleanly and the deadbolt lines up with the strike plate on the first try.
Interior Door Replacement in Montclair
Interior Door Replacement in Montclair is the cleanest scope we quote: a single slab, new hinges, a knob or lever set, and the old door hauled away. Most of the ranch homes and two-story tracts here were built with hollow-core interior doors that ding easily, and after a few decades of kids, dogs, and furniture moves, the faces are scarred and the hinge screws have stripped their holes. We replace them with solid-core or quality hollow-core slabs that close quietly and latch cleanly. A standard interior door replacement in Montclair runs $450 – $1,400 depending on the slab material and hardware finish.
Pre-Hung Door Swaps
If the existing frame is out of square, blown out at the hinge screw holes, or just sloppy from years of abuse, we recommend a pre-hung door. That means the slab comes already mounted in its own frame and we install the whole assembly. On interior doors this is typically a two-to-three-hour job per opening, and it takes care of misaligned reveals and hinge bind in one pass instead of three visits.
Hardware and Hinge Upgrades
A surprising number of interior doors in Montclair have original brass hinges holding new oiled-bronze hardware, because a previous handyman changed the knob but not the hinge. We match hinge finish to hardware, replace stripped hinge screws with longer fasteners that reach the framing, and adjust the door so it closes without slamming or sticking. The goal is a door that feels solid and sounds quiet every time it latches.
Trusted Brands We Service in Montclair
We install and service ViewLux, PGT, and CGI door systems in Montclair, and because our scheduling is coordinated from the Inland Empire office, we are close enough to pull from local stock and keep most jobs on a one-to-two-day calendar. PGT and CGI residential entries carry impact-rated glass options that matter in this wind zone. ViewLux gives Montclair homeowners a clean modern line with narrow sightlines and strong thermal ratings. We do not push one brand; we quote the door that fits your opening and your budget, and we stock replacement parts for all three lines.
Common Door Replacement Problems We See in Montclair Homes
- Warped original entry doors on 1980s tract homes. The original builder-grade units on the hillside streets have been cooking in sun for forty years, and the slab curls away from the weatherstrip at the corners. A new fiberglass slab holds its shape and seals consistently.
- Rotted jambs never caught during a previous slab swap. A new door gets hung in an old frame, and six months later the latch stops lining up. The door was never the problem; the jamb was. We repair the frame and reset the door as one job.
- Skipped sill pan flashing on south- and west-facing entries. The Santa Ana winds drive water under the threshold, and a door without a proper sill pan lets that water into the wall cavity. Unseen, it rots the subfloor until the door drops visibly at the latch side.
- Two-story tract entries treated like slab swaps. On the hillside homes with narrow original headers, widening an opening for a modern 36×80 entry with trim means reframing the header and lifting the work to the second story. That changes the scope, and we tell you that before the work starts, not after.
Pricing for Door Replacement in Montclair, CA
The biggest cost driver in Montclair is whether the jamb and header need reframing. A standard interior slab swap runs $450 – $1,400. A ranch entry with a new slab, jamb repair, and threshold reset runs $2,800 – $4,800. A two-story tract entry that needs the header widened and the opening reframed lands in the $5,000 – $6,500 range. The second driver is material: a primed steel entry costs less than a fiberglass slab with a glass insert, and impact-rated PGT or CGI glass adds to the line item. We show all of this on a written quote before work starts, and every quote from our door replacement team calls out exactly what changes the price if the wall is worse than it looks. Call (682) 281-2168 to schedule a free estimate with Sean Mackey’s team.
We Also Serve Cities Near Montclair
Juniper serves homeowners across the eastern Inland Empire, including Montclair and the surrounding communities. We regularly schedule door replacement work in Claremont, Ontario, Pomona, and La Verne, with the same written pricing and 365-Day Done Right Promise on every job. If you’re just outside Montclair, call (682) 281-2168 and we’ll confirm coverage for your street.
Serving Montclair, CA - Our Local Coverage Area
We’re based in the Montclair 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 Montclair
Yes, exterior door replacement in Montclair typically requires a residential permit when the opening is modified or the door is part of an exterior wall. A straightforward same-size slab swap may not need one, but any reframing or header work does. Juniper handles the permit paperwork and pulls the permit before we schedule the job, so you are never left to navigate City of Montclair requirements alone. Call (682) 281-2168 to discuss your specific opening.
A standard interior door replacement takes two to three hours per opening. A ranch entry with jamb repair and a new slab is typically a one-day job. A two-story tract entry that requires header reframing and a second-story lift runs two to three days, because the structural work has to pass inspection before we can set the door. We give you a calendar for your exact scope on the written quote, and we call you if anything changes. Call (682) 281-2168 for a timeline on your specific door.
A well-fitted entry door with a proper weatherstrip and thermal core can cut down the drafts that make your HVAC work harder during Montclair’s summer heat and winter Santa Ana nights. The bigger energy wins come from sealing the door against air leakage than from the core material itself. If your current door lets light through the gaps or rattles in the frame, the replacement will do more for your comfort than for the bill. Call (682) 281-2168 for a free energy check on your existing entry.
We replace the jamb, and we tell you the additional cost before we do the work. On a quote we write the door and jamb repair as separate line items, so if the jamb is sound, you pay the lower number. If it’s rotted, the jamb repair line item covers the pressure-treated stock, the sill pan rebuild, and the labor. You approve the change in writing before we proceed. Nothing gets done on a handshake. Call (682) 281-2168 and we’ll walk you through what a jamb repair adds to your specific door.
Yes, if the existing frame is square, sound, and the hinges are solid. We commonly do a same-size slab replacement on ranch homes and two-story tract homes in Montclair where the jamb is still true and the only problem is a warped or damaged door. But we won’t hang a new slab in a frame that’s out of square or rotting. Doing so guarantees gaps and binding in the first year, and that work would not honestly pass our own 365-Day Done Right Promise. Call (682) 281-2168 for a same-day assessment of your frame during our free estimate.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Montclair, CA.