Removal and disposal
We pull the old sash, remove the worn weatherstripping, and haul the debris away. We protect your floors and furniture with drop cloths before we start. No dumpster left in your driveway.
Licensed
Licensed & Bonded
Fully Insured
Insured & Bonded
24/7 Emergency
Same-Day Response
Warranty Backed
16+ Years Trusted in Los Angeles
What our sash replacement service includes
Every sash replacement job includes the parts and labor to remove the old sash, set the new one, and seal it tight. Here is what is covered on a standard install, and what we quote separately if your window needs it.
New sash and glass
Your new sash is built to the measured opening with the glass package you choose. Options include clear, low-E, low-E with argon, tempered, and laminated glass. We confirm the spec with you before ordering.
Hardware and balances
New balances, locks, and tilt latches come with the sash. We align the lock so it engages without forcing. If your existing hardware is in good shape and matches, we can reuse it to save cost.
Weatherstripping and caulk
We install fresh weatherstripping around the sash perimeter and seal the exterior with silicone caulk. This is what stops the drafts and water leakage. We use caulk rated for Southern California sun so it does not crack in a year.
Operation test and cleanup
We open, close, and lock the sash several times, check the seal, and clean the glass inside and out. You inspect the work with us before we pack up. Any adjustment gets made on the spot.
What Window Sash Replacement Los Angeles CA actually means
Window sash replacement means swapping the movable panel of a window, the part that slides or cranks, without tearing out the surrounding frame. We measure the existing opening with a tape measure, note the jamb depth, and order a new sash built to match. Then we set it on window setting blocks, shim it level, and seal the perimeter with silicone caulk and weatherstripping. The frame, trim, and interior wall stay untouched.
Los Angeles homes built between 1920 and 1970 often have original wood sashes that have swollen, cracked, or lost their seals after decades of sun and dry air. You may notice drafty windows in January, foggy glass in July, or a sash that will not stay up. That is where sash window repair Los Angeles work earns its keep. We also serve customers searching for Window Sash Replacement in Los Angeles CA near me who want the fix done without a full window tear-out.
How our sash replacement process runs
Five steps, one visit for most jobs. Here is exactly what happens from the first call to the final walkthrough.
01
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
02
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
03
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
04
Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Tools and methods we use
Tools & Equipment
Tape measure and level
We measure the sash width, height, and jamb depth to the sixteenth of an inch and check the frame for square. A sash ordered off a wrong measurement will not seal, no matter how well it is installed.
Pry bar and utility knife
We use a pry bar to probe the frame for rot at the corners and sill, and a utility knife to cut old caulk and paint away from the jamb without damaging the wood.
Caulking gun and insulation gun
The caulking gun lays a clean bead of silicone caulk around the exterior perimeter. The insulation gun fills gaps behind the jamb with low-expansion foam to stop air infiltration.
Drill and screwdriver set
We drill pilot holes for hardware and use a screwdriver set to set locks, tilt latches, and balances without stripping the screws or cracking the sash.
Window setting blocks and shims
Setting blocks hold the glass unit at the correct height inside the sash. Shims level the sash in the jamb so it operates smoothly and the lock aligns.
Flashing tape
On jobs where we open the exterior, flashing tape seals the rough opening against water intrusion. This is what keeps the wall dry behind the window during a winter storm.
Methods & Standards
AAMA and WDMA installation standards
We follow AAMA and WDMA guidelines for window installation, which cover shimming, fastening, and sealing. These standards exist because windows that are not set level and sealed correctly leak, no matter how good the sash is.
NFRC and ENERGY STAR glass selection
We spec glass using NFRC ratings so you know the U-factor and solar heat gain before you buy. ENERGY STAR qualified glass packages meet the efficiency targets set for this climate zone, which matters in a Los Angeles summer.
Low-E glass with argon fill
Low-E coating reflects heat back to its source and argon gas between the panes slows conduction. Together they cut solar heat gain and block UV, which protects furniture and flooring from fading.
Code-correct egress sizing
For bedroom and basement windows, we confirm the clear opening meets California code for egress. We measure the clear width and height with the sash open and document it so the window passes inspection.
When sash replacement is the right call
01
A 1930s Spanish bungalow in Highland Park with original wood sashes that have swollen and will not close flush.
What we do: We measure the opening, order custom wood sashes to match the original profile, and set them with new balances and weatherstripping. The frame and interior trim stay in place.
→ The windows close flush and lock for the first time in years. The house keeps its original look and the drafts stop.
02
A mid-century ranch in Woodland Hills with aluminum sliders where the glass has fogged and the rollers drag.
What we do: We replace the sliding sashes with thermally broken aluminum units and new rollers, then clean and align the track. The glass package includes low-E to cut afternoon heat.
→ The sliders glide again and the fog is gone. The west-facing room stays cooler in July.
03
A Santa Monica condo with vinyl double hung windows where the upper sash is stuck and the lower sash seal has failed.
What we do: We replace both sashes with new vinyl units, match the tilt hardware, and reseal the perimeter. The HOA-approved color is matched to the existing frame.
→ Both sashes operate and lock. The unit passes the HOA inspection and the noise from the street drops noticeably.
04
A Pasadena craftsman rental where the tenant reports water dripping onto the sill every winter.
What we do: We inspect the frame, find it solid, and replace the sash with a new sealed unit and fresh exterior caulk. We also check the flashing above the window.
→ The leak stops and the sill stays dry. The repair costs a fraction of a full window replacement and the tenant renews.
How sash replacement runs in Los Angeles
Los Angeles is hard on windows. Summer sun bakes west and south facing glass for six hours a day, and the dry air shrinks wood sashes until they rattle in the frame. Winter rain then finds every gap in the weatherstripping. The building stock makes it worse: 1920s bungalows with original wood sashes, 1950s ranches with aluminum sliders, and 1980s stucco homes with vinyl units that are now at the end of their life. We work with all of it. Our crews carry the tools to plane a swollen jamb, the caulk rated for UV, and the glass specs that meet California's energy requirements. If you are looking for sash window repair services Los Angeles wide, we cover the Valley, the Westside, and the San Gabriel Valley from one shop. We also handle Window Sash Replacement Los Angeles County jobs in older homes where the frame is sound but the sash has failed, which is the most common call we get.
Neighborhoods We Serve
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Sherman Oaks
Many 1950s and 1960s ranches here still have original wood sashes. The dry Valley heat shrinks them until they stick. We see a lot of sash replacement on west-facing windows.
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Santa Monica
Coastal moisture and salt air corrode hardware faster here. We spec stainless or coated hardware on Santa Monica jobs so the locks and balances do not seize.
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Pasadena
Craftsman and Spanish homes with historic trim profiles need custom wood sashes. We template the opening and match the profile so the new sash looks original.
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Woodland Hills
Summer temperatures here push past 100 degrees, which is tough on vinyl sashes. We often recommend fiberglass or thermally broken aluminum for west-facing windows in this area.
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Beverly Hills
Many homes here have large custom windows and strict HOA or historic review. We handle the submittal paperwork and match the existing profile exactly.
Local Conditions We Plan For
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Summer heat above 95 degrees in the Valley
Vinyl sashes can sag and seals can fail faster. We recommend fiberglass or thermally broken aluminum for west and south facing windows in Woodland Hills, Canoga Park, and Northridge.
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Winter rain and wind-driven moisture
Water finds every gap in worn weatherstripping and caulk. We reseal the perimeter with UV-rated silicone and check the flashing above the window head.
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Dry air that shrinks wood sashes
Wood sashes lose moisture and shrink, which opens gaps at the jamb. We seal new wood sashes on all sides before install to slow moisture loss.
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Coastal salt air near Santa Monica and the South Bay
Salt corrodes standard hardware. We use coated or stainless hardware on coastal jobs so locks and balances keep working.
Foggy double hung in Sherman Oaks
Problems our Window Sash Replacement Los Angeles CA work solves
Most sash calls come down to one of a handful of failures. Here is what we see most often and how we fix it.
Problem
Foggy glass and condensation between panes
The seal is broken and moisture has entered the insulated glass unit. You cannot clean it out. Left alone, the condensation drips onto the sill and rots the wood below.
Our Fix
We replace the sash with a new sealed insulated glass unit. The fog is gone the same day. If the frame is sound, this is a fraction of the cost of a full window replacement.
Problem
Drafty windows that whistle in winter
Cold air pushes through worn weatherstripping and gaps around the sash. Your furnace runs longer and the room never feels warm. Energy inefficiency shows up on the bill every month.
Our Fix
We set a new sash with fresh weatherstripping and seal the perimeter with silicone caulk. The draft stops. Most customers notice the difference the first cold night after install.
Problem
Sticking windows that will not open or stay up
Swollen wood, worn balances, or a bent sash make the window difficult to operate. You stop opening it, which cuts ventilation and traps heat inside during a Los Angeles summer.
Our Fix
A new sash with new balances restores smooth operation. We check the jamb for swelling and plane it if needed. The window opens with one hand and stays where you put it.
Problem
Rotted window frames around the sash
Water leakage at the sill or corners softens the wood. If the rot reaches the frame, a sash swap will not hold. The damage spreads into the wall and the repair cost climbs.
Our Fix
We probe the frame with a pry bar at the corners and sill. If the wood is solid, we do the sash. If it is soft, we show you and quote a full frame replacement so the fix lasts.
Why homeowners choose sash replacement
Replacing the sash keeps your original frame, trim, and stucco intact while restoring the performance of the window. Here is what that gets you in practice.
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Lower cooling bills
A failed sash seal lets conditioned air escape all summer. New low-E glass with argon gas cuts solar heat gain and blocks UV. Many Los Angeles customers see a measurable drop in summer cooling costs after we replace sashes on the west and south sides of the house.
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No more foggy glass
Fog between panes means the seal is gone and moisture has entered the unit. You cannot clean it out. Replacing the sash restores a clear, sealed insulated glass unit, so you get your view back and stop the condensation that drips onto sills and rots the wood below.
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Smooth, quiet operation
Sticking windows and difficult operation usually trace back to worn balances, swollen wood, or a bent sash. A new sash with fresh hardware slides or cranks the way it did when the house was new. You also get a tighter fit that cuts noise infiltration from the street.
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Keeps the original look
Historic and mid-century homes in Los Angeles often have trim profiles you cannot buy off a shelf. Sash replacement preserves the frame and interior casing, so the window still matches the house. We match wood, vinyl, or aluminum sashes to the existing opening.
Licensed, insured, and accountable
Licensed & Certified
- California Contractor License — issued by California State License Board (CSLB)
- ENERGY STAR Partner — issued by U.S. Environmental Protection Agency
- NFRC Certified Products — issued by National Fenestration Rating Council
- AAMA Installation Standards — issued by American Architectural Manufacturers Association
- OSHA Safety Training — issued by Occupational Safety and Health Administration
Verified Reviews
Google ★★★★★4.9
Called about three foggy windows and they came out two days later. Measured everything, gave me a written price, and had the sashes in a week. Install took half a day. Clean work, no mess left behind. The windows look new.
Yelp ★★★★★4.8
I was told by another company I needed full replacement on six windows. American Reliable showed me the frames were fine and quoted sash replacement instead. Saved me thousands. Honest crew, showed up on time, did what they said.
BBB A+
We used them for a rental property in Van Nuys. Nine sashes replaced across two buildings in three days. Written per-unit pricing on the first visit. Tenants stopped calling about drafts. Will use again.
Google ★★★★★5.0
Our 1948 house had original wood sashes. They matched the profile, primed the new wood, and set them with new hardware. The windows close flush for the first time since we bought the house. Highly recommend.
What Los Angeles customers say
Real experiences from customers who chose our Window Sash Replacement services.
“We had three double hung windows that were painted shut and fogged. American Reliable replaced all three sashes in one morning. The crew laid down drop cloths, measured everything twice, and the new sashes slide like butter. Our summer electric bill dropped about $40 a month. Worth every dollar.”
M
Marisol R.
Homeowner, Sherman Oaks
“Our 1948 house had original wood sashes with rotted bottoms. I expected to be told I needed full replacement. Instead they showed me the frame was solid and quoted sash replacement. Saved us thousands. The new wood sashes were primed and matched the trim perfectly.”
D
David K.
Homeowner, Santa Monica
“I manage six rental units and called three companies for sash window repair. American Reliable was the only one that gave me a written per-unit price on the first visit. They replaced nine sashes across two buildings in three days. Tenants stopped complaining about drafts. I use them for all my Valley properties now.”
P
Priya N.
Property Manager, Pasadena
Frequently Asked Questions
Real answers to the questions we hear most often from local homeowners and property managers.
How much does Window Sash Replacement cost in Los Angeles?
Most sash replacements in Los Angeles run $350 to $900 per window in 2026, depending on size, glass package, and frame material. A standard vinyl sash with clear glass sits at the low end. Wood sashes, custom profiles, and low-E glass with argon push toward the top. Multi-window jobs get a lower per-unit price. We give you a written number before we order anything.
What is sash window repair in Los Angeles CA?
Sash window repair in Los Angeles CA is fixing or replacing the movable panel of a window rather than the whole unit. That can mean new balances, new glass, new weatherstripping, or a full new sash. The frame stays in the wall. It is the right call when the frame is solid but the sash is rotted, warped, fogged, or stuck.
Who offers Window Sash Replacement near me in Los Angeles?
American Reliable Windows & Doors offers Window Sash Replacement across Los Angeles County, from Sherman Oaks and Woodland Hills to Santa Monica, Pasadena, and Beverly Hills. We have been doing this work since 2010. Call +1 (747) 298-4287 and we will tell you on the phone whether your window is a sash job or a full replacement.
Can I replace just the sash instead of the whole window in Los Angeles?
Yes, if the frame is sound. We check for rot with a pry bar at the corners and sill. If the wood is solid, a new sash restores the window for a fraction of full replacement cost. If the frame is soft or the flashing is failing, we will show you and quote a full frame replacement instead. You decide.
Related Services
Full Frame Window Replacement
When the frame itself is rotted or the flashing has failed, a sash swap will not hold. We pull the whole unit, repair the rough opening, and set a new frame with proper flashing tape and insulation. This is the right call for water leakage that has reached the wall cavity.
View Full Frame Window ReplacementRetrofit Window Replacement
Retrofit replacement keeps your existing interior and exterior trim and fits a new window into the old opening. It is a middle path between sash replacement and full frame work. We measure the opening, order the unit, and seal it tight without touching your stucco or drywall.
View Retrofit Window ReplacementInsert Window Replacement
Insert windows drop into the existing frame pocket, similar to sash replacement but with a complete new unit. They are fast to install and cut labor cost. If your frame is square and solid, an insert can be a better value than replacing individual sashes.
View Insert Window ReplacementDouble Hung Window Replacement
Double hung windows have two movable sashes, so both can fail. We replace one or both, match the tilt hardware, and restore smooth operation. Common in older Los Angeles homes where the upper sash has been painted shut for decades.
View Double Hung Window ReplacementSingle Hung Window Replacement
Single hung windows have one fixed sash and one movable sash. Only the movable one wears out. We replace that sash and leave the fixed unit in place, which keeps the cost down and the install quick.
View Single Hung Window ReplacementCasement Window Replacement
Casement windows crank open and rely on a hinge and operator that wear out. If the sash is bent or the hardware is stripped, we replace the sash and the operator together so the window seals tight when closed.
View Casement Window ReplacementContact American Reliable Windows & Doors
Call +1 (747) 298-4287 or email us and we will get you on the schedule. We answer the phone seven days a week and can usually book a same-day estimate if you reach us before noon. Tell us how many windows, what material you are leaning toward, and whether anything is broken or leaking.
American Reliable Windows & Doors
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Phone
+1 (747) 298-4287 -
Address
6161 Van Nuys Blvd Van Nuys, CA 91401, Los Angeles, California
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Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available