Every retrofit job we quote covers the unit, the labor, the sealing materials and the cleanup. We spell out what is in the price before you sign so there is no mid-job conversation about extras. Add-ons like upgraded glass or new interior trim get quoted separately and only if you ask for them.
We measure every opening with a tape measure and check square with a level. We also inspect the sill and jamb for rot, water staining or previous patch work. Any frame that will not accept an insert cleanly gets flagged before we order.
Your quote includes the complete unit with sash, frame, glass and hardware. Standard spec is double-pane low-E with argon gas. We can upgrade to laminated glass for noise or tempered glass where code requires it near doors and wet areas.
We set each unit on window setting blocks, shim it level, and seal the perimeter with flashing tape and silicone caulk. Fresh weatherstripping goes on every operable sash. This is the step that stops the drafts and water intrusion you have been fighting.
Locks, latches, cranks and tilt mechanisms come installed and tested. We fit new screens to every operable window and confirm they seat properly. You get a walkthrough where we open and close each unit with you before we pack up.
We pull the old sashes, load them in the truck and haul them away. No dumpster in your driveway, no pile of old windows sitting on the side yard for a month. The room is broom-clean when we leave.
Our installation carries a written workmanship warranty on top of the manufacturer's product warranty. If a sash needs adjustment or a seal fails because of how we set it, we come back and fix it. That is what the direct line is for.
Retrofit Window Replacement Los Angeles CA is a window installation method that sets a new insert unit into your existing window frame instead of removing the frame itself. We pull the old sash, true up the opening, set the new unit on window setting blocks, shim it level, and seal it with flashing tape and silicone caulk. Because the original frame stays in the wall, you avoid stucco patching, interior drywall repair and repainting trim. Most single windows take two to four hours start to finish.
Los Angeles homes are full of original single-pane wood and aluminum frames from the 1920s through the 1970s, and those frames are usually still square enough to accept an insert. The payoff is real: low-E glass with argon gas cuts heat gain on west-facing walls, weatherstripping kills the draft you feel at your desk, and laminated glass knocks down street noise. If you have been searching for Retrofit Window Replacement in Los Angeles, California near me, this is the service that fits your situation.
Five steps from first phone call to final walkthrough. We tell you the schedule up front, we show up when we say we will, and you get a written price before anyone touches a window.
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Tape measure and 4-foot level
Used during the in-home measure to record exact opening dimensions and check whether the existing frame is square. A frame that is out of level by more than a quarter inch usually needs a full frame replacement instead of an insert.
Pry bar and utility knife
We use these to remove the old sash and stop, and to cut away old caulk and paint without damaging the surrounding jamb or interior trim. Careful removal is what lets us keep your existing casing.
Caulking gun and silicone caulk
The perimeter seal is the difference between a window that performs and one that leaks. We run a continuous bead of silicone caulk around the exterior and interior edges after the unit is set and shimmed.
Window setting blocks and shims
Setting blocks hold the unit off the sill so it does not sit in standing water, and shims bring the frame level and plumb. Both are critical to smooth sash operation and to keeping the glass from binding.
Flashing tape
Applied over the nailing flange or perimeter on the exterior side to shed water away from the opening. This is the layer that protects against the wind-driven rain we get in Los Angeles during winter storms.
Drill and screwdriver set
Used to secure the unit to the existing frame and to install hardware, locks and cranks. We torque fasteners evenly so the frame does not distort and the sash stays true.
Insulation gun
For filling any gaps between the new unit and the existing jamb with low-expansion foam. This closes the air paths that weatherstripping alone cannot reach and improves the overall thermal performance.
NFRC rated performance verification
Every unit we quote carries an NFRC label listing U-factor, solar heat gain coefficient and visible transmittance. We show you the label before ordering so you can compare performance across brands instead of taking a salesperson's word for it. This matters most on west and south facing walls.
AAMA certified installation practices
We follow AAMA guidance for setting, shimming and sealing insert units, including setting block placement and perimeter flashing. These are the same standards manufacturers reference when they evaluate a warranty claim, so following them protects your coverage.
ENERGY STAR glass package selection
We match the glass package to your window's orientation and your goal, whether that is cutting heat gain, blocking noise or hitting a rebate threshold. ENERGY STAR qualified units can qualify for utility incentives, and we will tell you which ones meet the current criteria.
California code compliance check
Before ordering, we confirm that egress openings, tempered glass locations near doors and wet areas, and any Title 24 requirements are met. Getting this right up front avoids a failed inspection and a re-order later.
OSHA compliant jobsite setup
Drop cloths, ladder safety, tool staging and daily cleanup follow OSHA jobsite rules. It keeps our crew safe and keeps your floors and furniture protected from the moment we walk in to the moment we leave.
01
What we do: We measure the existing openings, confirm the frames are square and free of corrosion damage, and order insulated inserts in the same profile. The old aluminum sashes come out, the new units go in on setting blocks, and we seal the perimeter with flashing tape.
→ You keep the original opening size and trim, gain insulated glass, and the sliders glide instead of rattle. Most jobs like this finish in a single day.
02
What we do: Retrofit is the right call here because the old-growth framing is straight and worth preserving. We set inserts that match the existing profile, keep the interior casing intact, and add low-E glass with argon. Any sill with early rot gets treated or sistered before the new unit goes in.
→ The house keeps its character and gains modern performance. You avoid stucco patching and repainting the exterior trim.
03
What we do: We quote a laminated glass package designed for sound reduction and seal every perimeter carefully. Because the frames are sound, no demolition is needed and the HOA does not have to approve exterior changes.
→ Noise drops noticeably and the bedroom becomes usable again. The install takes one day with no disruption to neighboring units.
04
What we do: We spec low-E glass with a solar heat gain rating suited to that exposure and confirm the NFRC label before ordering. The inserts go in without touching the stucco, and we seal the perimeter to stop air infiltration around the old frames.
→ Afternoon heat gain drops and the air conditioner cycles less. The room stays comfortable without closing the blinds all day.
Los Angeles is a retrofit town. The housing stock is old, the frames are often original, and most of them are still solid enough to accept an insert. The climate works in your favor too. We do not fight frost heave or months of snow load the way colder markets do, so frames stay square longer. What we do fight is UV. Two decades of direct sun will dry out weatherstripping, warp vinyl sashes and break down glazing seals, which is why west and south facing windows fail first. Our winter rain is short but intense, so perimeter flashing and silicone caulk matter more here than in a dry climate. We also work around Title 24 energy requirements and local permitting rules, and we check egress and tempered glass locations before we order. If you are looking for retrofit window replacement in Los Angeles, California near me, this is what the work actually looks like in your neighborhood.
Sherman Oaks
A mix of 1940s and 1950s homes with original wood double-hungs. Most frames are still square, which makes them strong retrofit candidates. We see a lot of failed glazing seals on south-facing windows here.
Woodland Hills
Hot summer afternoons on west-facing walls push low-E glass to the top of the list. Many homes here have 1960s aluminum sliders that rattle and leak air, and inserts solve both problems in one visit.
Pasadena
Craftsman and Spanish Colonial homes with detailed exterior trim. Retrofit lets us keep that trim and the original casing intact, which matters when the house has historic character worth preserving.
North Hollywood
Older bungalows and small apartment buildings with a wide range of frame conditions. We measure carefully here because opening sizes vary from house to house, even on the same block.
Santa Monica
Coastal air accelerates corrosion on old aluminum frames and hardware. We inspect closely for pitting before quoting an insert, and we spec hardware that holds up to salt air.
Intense UV exposure on west and south facing walls
Weatherstripping dries out and cracks, vinyl sashes warp, and glazing seals fail years earlier than on shaded elevations. We spec UV resistant materials and low-E glass on those exposures to extend the life of the install.
Short but heavy winter rain events
Water intrusion around a poorly sealed perimeter shows up fast. We run flashing tape and a continuous silicone caulk bead on every opening, and we check the sill for existing water damage before setting the new unit.
Freeway and boulevard traffic noise
Homes near the 101, 405 and major boulevards deal with constant low-frequency noise. Laminated glass and tight perimeter seals make a measurable difference, so we quote a noise package when that is the main complaint.
Older housing stock with varied opening sizes
Pre-1960 homes rarely have standard dimensions, so we measure every opening individually and order custom sizes where needed. Guessing from a catalog size is how you end up with gaps and drafts.
Most retrofit calls start with one of four complaints: you feel a draft, you see fog between the panes, the window will not close, or the room is too loud. All four trace back to failed glass, worn seals or a sash that has warped out of alignment. Here is how we handle each.
Problem
Your air conditioner runs longer to hold the thermostat setting, and the rooms facing west never quite cool down. Over a full summer that shows up as a bigger electric bill and a house that feels uneven room to room.
Our Fix
We replace the failed unit with a low-E argon insert and install fresh weatherstripping around every operable sash. The perimeter gets sealed with flashing tape and silicone caulk. Most customers notice the draft is gone the first evening after install.
Problem
Foggy glass means the seal on your insulated unit has failed and moisture is inside the assembly. You cannot clean it out. The window also loses most of its insulating value, so it performs close to single pane.
Our Fix
A failed seal means the unit is done, not the frame. We pull the old sash, set a new insulated insert with a fresh warm-edge spacer, and seal it in place. You get clear glass and full rated performance without touching the surrounding wall.
Problem
A sash that will not close leaves a gap you cannot seal, which defeats the lock and the weatherstripping at the same time. It is also a security issue on ground-floor windows that no longer latch shut.
Our Fix
We check whether the frame has shifted or the sash itself has warped. If the frame is still square, a new insert with modern hardware solves it. We test every lock and latch during the walkthrough so you know each window closes and secures.
Problem
Single-pane glass transmits traffic noise straight into living rooms and bedrooms. If you live near the 101, 405 or a busy boulevard, that noise wears on you night after night and disrupts sleep.
Our Fix
We spec laminated glass or an asymmetric double-pane package designed to block sound, then seal the perimeter tight. Homeowners near freeway corridors tell us the difference is obvious the first night. We will quote the noise package alongside standard glass so you can compare.
Retrofit work solves the same problems as a full frame replacement with less mess, less downtime and a smaller bill. Here is what you actually get when we set new inserts into your existing openings.
Lower Installed Cost
Because we keep your existing frame, you skip the carpentry, stucco and drywall labor that drives up a full tear-out. That usually trims 20 to 35 percent off the project. A replacement window insert Los Angeles homeowners order from us often lands hundreds of dollars below a comparable full-frame job on the same window count.
One-Day Room Turnaround
We finish most single-window retrofits in two to four hours and a whole-house run in one to two days. You sleep in your own bed that night with no plastic sheeting on the furniture. No demolition crew, no dumpster in the driveway, no three-week gap waiting on a stucco patch to cure.
Real Energy Savings
Low-E glass with argon gas and a warm-edge spacer blocks a measurable share of Southern California heat gain. Paired with fresh weatherstripping, that means your air conditioner cycles less from June through September. Many of our customers pair this with ENERGY STAR rated units to qualify for utility rebates.
Quieter Rooms
Laminated glass and tight seals cut traffic noise from boulevards and freeway-adjacent streets. Homeowners near the 101 and 405 corridors notice the difference the first night. If noise infiltration is your main complaint, we spec the glass package around that goal instead of defaulting to standard double-pane.
Google ★★★★★4.9
Measured on a Tuesday, installed three weeks later, done in a day and a half. They kept our original trim and hauled off the old windows. The draft we had been fighting for years is gone. Straight pricing, no upsell, and they answered the phone when I called with a question afterward.
Yelp ★★★★★4.8
We had six foggy windows and two sliders that would not close. They quoted a retrofit instead of a full frame job and saved us thousands. Crew was clean, on time, and walked us through every window before leaving. The low-E glass made a real difference on our summer bill.
BBB ★★★★★4.9
Old Craftsman with solid frames and single-pane glass. They flagged two sills with dry rot during the measure instead of hiding it, fixed those, and installed the rest. House is quieter and the character is intact. Would use them again without hesitation.
Google ★★★★★5.0
Called about noise from the boulevard keeping us up at night. They recommended laminated glass and explained the difference clearly. Install was one day, no mess, and the bedroom is finally usable. Fair price for the work and the follow-up was quick.
Real experiences from customers who chose our Retrofit Window Replacement services.
“Our 1948 house had original single-pane windows and you could feel the draft from the couch. American Reliable measured on a Tuesday and had inserts in three weeks later. They kept the original trim, which mattered to us. The street noise from Ventura Boulevard dropped enough that I sleep through the morning now. Whole job was done in a day and a half.”
Marisol R.
Homeowner, Sherman Oaks
“Three windows on the west side of the house had foggy glass and one sash would not close all the way. They quoted a retrofit instead of pushing a full frame job, which saved us real money. Crew laid down cloths, worked clean and hauled the old units off. The low-E glass made a difference on our summer electric bill.”
Dennis K.
Homeowner, Woodland Hills
“We have a 1924 Craftsman and I was worried new windows would wreck the look. They matched the frame profile and kept the interior casing intact. Two of the sills had dry rot and they flagged it during the measure instead of hiding it. Fixed those, installed the rest, and the house is noticeably quieter on Washington Boulevard.”
Priya N.
Homeowner, Pasadena
Real answers to the questions we hear most often from local homeowners and property managers.
When your existing frame is rotted, out of square or water damaged, a full frame replacement is the correct fix. We remove the entire unit down to the rough opening, rebuild the sill if needed, and install a new frame and sash. This is the option we recommend when a retrofit insert would just trap a failing frame behind new glass.
View Full Frame Window ReplacementInsert window replacement is the same method as a retrofit, just described by the product rather than the technique. We set a complete insert unit into your existing jamb, seal it with flashing tape and silicone caulk, and leave your interior trim untouched. Best for solid frames with failing glass or worn weatherstripping.
View Insert Window ReplacementIf your frame and jamb are fine but the moving sash is shot, sash replacement swaps just the operable portion. It costs less than a full insert and takes about an hour per window. We match the new sash to your existing frame profile so the fit and finish look original.
View Window Sash ReplacementDouble hung units have two operable sashes that slide up and down and tilt in for cleaning. They are the most common window in older Los Angeles homes and the most frequent retrofit we install. We stock common sizes and can order custom dimensions when your openings are non-standard.
View Double Hung Window ReplacementSingle hung windows have a fixed upper sash and one operable lower sash. They cost less than double hungs and seal slightly tighter because there is one fewer moving part. A good fit for bedrooms, hallways and any opening where you do not need to vent from the top.
View Single Hung Window ReplacementCasement windows crank open outward on a hinge, which catches cross breezes better than any other style. They seal tight against the weather when closed, making them a strong pick for west-facing walls that take afternoon sun. We install them in vinyl, fiberglass and wood-clad.
View Casement Window ReplacementCall +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.
Phone
+1 (747) 298-4287Address
6161 Van Nuys Blvd Van Nuys, CA 91401, Los Angeles, California
Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available
