Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Door Replacement Across Alameda
Door replacement in Alameda typically runs $400 – $1,100 for an interior door, $1,800 – $4,500 for a standard exterior entry unit, and $3,500 – $7,500 for a pre-hung exterior door with sidelights or custom sizing. Most jobs take one day for interior doors and one to two days for exterior units once materials land. At Juniper Windows & Doors, we scope the work, hand you a written price, and install it right the first time. Call (682) 281-2168 for a free estimate.
Alameda is not a generic service area for us. The island’s bay-fill soil, pre-war housing stock, and marine climate create specific conditions that change how a door replacement should be scoped. We plan for racked jambs, fog-damp sill pans, and openings that have shifted over decades. That local knowledge is why our Door Replacement team treats every Alameda job as its own project, not a template.
Why Juniper Windows & Doors Is Alameda’s Preferred Door Replacement Company
Since 2001, Juniper Windows & Doors has operated as the windows-and-doors specialist inside the Relay Home Co. family. Homeowners across Alameda call us because we commit to a number before work begins and stand behind it with the 365-Day Done Right Promise: 365 days, parts and labor, in writing. If something is not right, we return and fix it. No charge, no argument.
Every Juniper technician is background-checked and uniformed. When a crew shows up at your home near Webster Street or Bay Farm Island, you know exactly who is walking through your door. Scheduling works the same way: our live dispatch team answers the phone 24/7, you get a live arrival time you can track, and after the job we send before-and-after photos plus a digital invoice you can pay from a link. That is the Relay Visibility Guarantee, and it is how door replacement should work.
We also keep product lines in stock that match Alameda’s housing: Therma-Tru entry units, PGT and CGI exterior options, CWS sliding patio doors, and ViewLux for clean interior sightlines. Not every door fits every opening, and we will tell you when a spec does not make sense for your home.
Interior Door Installation in Alameda
Interior Door Installation in Alameda usually means replacing a hollow-core slab or a dated panel door with a solid-core unit, often in a 1910s or 1920s home where the original jambs have shifted. The job involves removing the old slab or pre-hung unit, checking the rough opening for square, re-shimming as needed, hanging the new door, installing or matching casing, and adjusting hardware so the latch actually catches. In older Alameda homes, we regularly find jambs out of plumb by a quarter to three-eighths of an inch, so a simple slab swap rarely works without re-leveling the frame.
Interior door replacement in Alameda typically costs $400 to $1,100 per door, depending on slab material, whether the jamb needs re-shimming, and whether casing has to be matched to period trim. Pre-hung interior units run closer to $600 to $1,100 installed. Solid-core doors cost more than hollow-core, but they add real sound isolation between rooms and are worth it in shared-wall layouts.
Matching Period Casing and Trim
Alameda’s Victorian and Craftsman homes often have original trim profiles that big-box replacements cannot match. We match casing profiles and door heights to what already exists in the house. On a recent bungalow off Encinal Avenue, we replaced two interior doors and cut new casing to match the original period trim exactly.
When a Slab Swap Is Enough
If the jamb is square and the hinges and strike plate are intact, a slab swap is the lower-cost option. That runs $400 to $600 installed. If the jamb is racked, which is common on bay-fill lots, a pre-hung replacement is the better call, and we will show you the measurements before you commit.
Door Installers in Alameda
Door Installers in Alameda need to know more than how to swing a level. Exterior work here means dealing with thresholds that have settled, sill pans that collect fog moisture, and openings that require re-shimming before a new unit can be dropped in. Our installers inspect the rough opening, check the sill pan and flashing, re-level the jamb, set the pre-hung unit, insulate the gap, and seal the exterior. For patio or rear entry doors, we also check the threshold slope and weather stripping before finishing.
Exterior door installation in Alameda typically runs $1,800 to $4,500 for a standard pre-hung entry unit, with higher-end Therma-Tru or PGT units plus glass upgrades reaching $5,000 to $7,500. The range depends on jamb condition, trim work, door material, and whether the sill pan needs rebuilding. We give a written line-item price before any work starts, so the number you approve is the number you pay.
Exterior Entry Doors and Bay-Fill Settlement
Alameda sits on bay-fill and reclaimed tidal land, and that means exterior openings move. We replaced a rear entry door on a 1920s bungalow off Encinal Avenue near Park Street where the original jamb was out of plumb by about 3/8 inch. Our tech re-shimmed the opening, installed a Therma-Tru unit with low-E insulated glass, and sealed the sill. The homeowner said the room felt cooler within hours.
Patio and Sliding Door Replacement
Sliding patio doors facing Alameda’s marine layer need a proper sill pan and weep drainage. We install CWS and PGT sliding units with thermally broken frames, and we always check the track level before setting the door. A racked slider will bind, leak, or chew through rollers within a year.
Trusted Brands We Service in Alameda
We install and service doors from Therma-Tru, PGT, CGI, CWS, and ViewLux. Therma-Tru entry systems are our default exterior recommendation for Alameda because they hold up to marine moisture and offer solid U-factor ratings without overspending on coastal impact glazing. PGT and CGI make sense for homeowners who want extra wind and security ratings, and CWS covers patio sliders and French door configurations. ViewLux handles clean interior sightlines when you want a modern, minimal look. Because we stock parts for these brands locally, turnaround for a replacement or hardware fix in Alameda stays short.
Common Door Replacement Problems We See in Alameda Homes
- Racked jambs from bay-fill settlement. Many pre-war Alameda openings are no longer square, so a new slab will not hang correctly without re-shimming the existing frame. We measure the jamb before quoting, so the written price covers the actual condition.
- Fog moisture at exterior thresholds. Alameda’s marine layer pushes damp air against door sills year-round. Failed sill pans and worn threshold seals let water reach the subfloor, and that rot spread is what turns a simple door replacement into subfloor repair.
- Hollow-core interior doors in older homes. Original hollow-core slabs warp, delaminate, or simply look tired. Replacing them with solid-core units adds real sound isolation, which matters in Alameda’s close-lot bungalows.
- Overspec’d impact glazing. Some Alameda homeowners are quoted coastal-rated, large-missile impact assemblies for every exterior door. Our mild marine climate and low design pressure requirements make that overkill and a wasted budget line. We spec what the opening actually needs.
Pricing for Door Replacement in Alameda, CA
Interior door replacement in Alameda runs $400 to $1,100 per door installed, depending on slab material, jamb condition, and casing work. Standard pre-hung exterior entry doors run $1,800 to $4,500. Larger entry units with sidelights, custom glass, or premium Therma-Tru or PGT construction land between $3,500 and $7,500. Sliding patio doors run $1,500 to $4,000 installed. The biggest cost drivers are jamb condition on older openings, whether the sill pan needs rebuilding, trim and casing matching, and glass package. Every estimate is line-itemed and written before work starts. Call (682) 281-2168 to schedule a free estimate, and you will have a number you can plan around.
We Also Serve Cities Near Alameda
Our crews serve Door Replacement in Alameda and the surrounding East Bay. Homeowners in Oakland, Piedmont, Emeryville, and Berkeley call us for the same written pricing and 365-Day Done Right Promise. Scheduling is coordinated from the brand’s San Francisco Bay Area office, with crews dispatched locally to Alameda.
Serving Alameda, CA - Our Local Coverage Area
We’re based in the Alameda 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 Alameda
In most cases, replacing an exterior door in the same rough opening does not require a permit in Alameda, but if the opening size changes or structural framing is altered, a permit is required. We pull permits when the job calls for them and handle the inspection. Call (682) 281-2168 and we will confirm what your specific project needs.
An interior slab or pre-hung interior door usually takes half a day to one full day. A standard exterior entry door takes one day, and an entry system with sidelights or custom sizing takes one to two days. We schedule the work in writing and send a live arrival time before the crew shows up.
We install Therma-Tru, PGT, CGI, CWS, and ViewLux. Therma-Tru is our most common exterior recommendation for Alameda’s marine climate. PGT and CGI add higher wind and security ratings when you want them. CWS covers patio sliders. ViewLux handles modern interior doors. Call (682) 281-2168 for a product recommendation specific to your opening.
In Alameda, the most common cause is bay-fill settlement that has racked the jamb out of square. Temperature swings from the marine layer can also swell or shift door slabs slightly. The fix is re-shimming and re-leveling the jamb, not sanding the door edge. We inspect the opening and tell you what is actually off before quoting.
No. Alameda’s mild marine climate and low design pressure requirements mean standard insulated glass with low-E coating is usually the right spec. Impact-rated, large-missile assemblies are overkill for this region and add cost without adding practical protection. We will quote the glass that matches your actual exposure. Call (682) 281-2168 for an exact price.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Alameda since 2001.










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