Home / Soundproof Windows
Soundproof Windows in Los Angeles Laminated Glass and Inserts That Block Freeway and Airport Noise
Soundproof windows run about $300 to $1,500 each, and interior inserts run $250 to $500, according to Angi. A standard window rates around STC 26 to 28, while a good insert over your existing glass can reach the high 40s. PaneRight LA connects you with independent local contractors who handle soundproof window replacement across Los Angeles, from homes near LAX and the 405 to bedrooms under the Burbank flight path.
Call (424) 230-8336 for a free noise check and quote.
- Free quotes
- Serving 10 LA areas
- Independent local contractors
Free quoteFrom a local contractor
Is Outside Noise Keeping You Up at Night?
If you hear traffic, jets or leaf blowers with the windows shut, the glass and its gaps are letting sound in.
01
Why Can You Hear Every Car on the Freeway Through Your Windows?
Freeway noise never stops. LA Metro counts nearly 40,000 heavy trucks a day on the I-710 alone, and the 405, the 101 and the 10 carry just as much traffic past homes. Single-pane glass and loose sliders let that steady roar straight into bedrooms and home offices.
02
Why Do Double-Pane Windows Still Let In So Much Noise?
Double-pane glass is built to stop heat, not sound. Two thin panes of the same thickness with a small air gap vibrate together at the same pitch, so many dual-pane windows score no better than single-pane on STC. Frames that don’t seal tight leak even more.
03
Why Is the Low Rumble From Trucks, Planes and Motorcycles So Hard to Block?
Low-frequency sound has long waves that shake glass and walls instead of bouncing off them. That’s why you can still feel a bus idling on Sepulveda or a jet climbing out of Van Nuys. Heavier glass, laminated layers and a wider air space are what slow that rumble down.
What’s Included in Our Soundproof Windows Service?
Every job starts with a noise check at your home, then glass and frames chosen for the noise you actually hear, a sealed install and a written price for each window.
01
Do You Install Laminated Glass With Different Pane Thicknesses?
Yes. Laminated glass has a PVB plastic interlayer that damps vibration. Pairing laminated glass with a pane of a different thickness, called asymmetric glass, stops both panes from ringing at the same pitch. Angi notes laminated glass can cut noise by up to 75%.
02
Can You Add Noise-Reducing Inserts Over Your Existing Windows?
Yes. An insert is a second window mounted inside your current frame, leaving a wide air gap between the two. That gap does most of the work. Inserts suit homes where you want to keep the outside look, like historic homes or condos with HOA rules.
03
How Do You Seal the Gaps Around the Frame Where Sound Leaks In?
Sound finds the smallest opening. Contractors remove old caulk and weatherstripping, fill gaps between the frame and wall with acoustic sealant that stays flexible and check that every sash closes tight. A premium window with leaky edges won’t stop much noise.
How Much Do Noise-Reducing Windows Cost in Los Angeles?
Angi puts soundproof windows at an average of $900 per window, with most jobs between $300 and $1,500. Five windows run around $4,500 installed.
| Option | Price per window (Angi) |
|---|---|
| Interior window insert | $250 to $500 |
| Double-pane window | $350 to $850 |
| Triple-pane window | $400 to $3,540 |
| Laminated glass | $10 to $20 per square foot |
| Labor | $100 to $800 |
Are Window Inserts Cheaper Than New Windows?
Yes. Inserts run $250 to $500 per window, while a full replacement can pass $2,000 with installation. Inserts leave your old window in place, so they don’t fix drafts, heat or a broken frame. If your windows are worn out, see our home window replacement service.
Why Do STC 40+ Windows Cost More?
Higher STC takes thicker laminated glass, a wider air space and heavier frames that seal tighter. Those parts cost more to build and weigh more to install. Buy the STC you need for your noise, not the highest number on the brochure.
New Windows, Inserts or Curtains: Which Blocks the Most Noise?
| Option | Noise blocked | Best for |
|---|---|---|
| Heavy curtains ($20 to $400) | A little | Renters, quick fix |
| Acoustic caulk and new seals | Leaks only | Any window with gaps |
| Interior inserts | High | Keeping existing windows |
| New laminated windows | High | Worn out windows near freeways and airports |
Curtains soften echo but won’t stop freeway noise. Sound resistant windows or inserts are the real fix.
What STC Rating Do You Need for Street, Freeway or Airport Noise?
STC, or Sound Transmission Class, measures how much sound a window blocks. Higher is quieter, and OITC is a second rating that better reflects low traffic rumble.
| Noise source | Suggested STC |
|---|---|
| Quiet street | Low 30s |
| Busy boulevard like Ventura or Lincoln | Mid to high 30s |
| Freeway or flight path | 40 and up |
These suggestions follow the City of LA’s own minimums for airport noise zones, covered below.
How Does Our Window Soundproofing Process Work, Step by Step?
- Noise check. Contractors note where the noise comes from and which rooms matter most.
- Plan. Contractors pick inserts or new windows and the STC each room needs.
- Quote. You get a written price for each window.
- Permit and order. Contractors file the permit for replacements and order glass built to size.
- Install and seal. Windows go in with acoustic sealant around every edge.
- Final check. Contractors close every window and walk the rooms with you.
What Should LA Homeowners Know Before Buying Noise-Reducing Windows?
Airport noise zones, glass choice and rental rules all shape what you should buy.
01
Do Homes Near LAX, Van Nuys or Burbank Airport Need a Higher STC Rating?
Yes. In City of LA airport noise zones, LADBS requires openable replacement windows of at least STC 35 in the 65 to 70 dB area, and STC 40 in the 70 to 75 dB area. Near LAX, the LAWA sound insulation program may replace windows for free for eligible homes built before October 1, 1998. Hollywood Burbank Airport runs its own program for homes in its 65 CNEL area.
02
Is Triple-Pane Glass Better for Noise Than Laminated Glass?
Not always. Triple-pane glass with equal thin panes and small gaps doesn’t always beat double-pane for sound. Laminated glass, or panes of different thickness with a wide air gap, blocks more noise for the money.
03
Can You Install Removable Noise Inserts in a Rental?
Yes. Interior inserts press into the frame and come out without damage, so renters and condo owners can use them. Get your landlord’s okay first, and check your HOA rules for anything visible from outside.
Why Do LA Homeowners Choose PaneRight LA to Quiet Their Homes?
Homeowners pick us for things they can check:
- Noise check first. Contractors match the fix to your noise, not the priciest option.
- Rated glass. STC and OITC listed on every quote.
- Airport zone know-how. Windows that meet LADBS STC minimums.
- Sealed installs. Acoustic sealant around every frame.
- Warranty in writing. Ask for a written labor warranty on top of the manufacturer’s warranty.
Where Do Contractors Install Noise-Reducing Windows in Los Angeles?
Contractors handle soundproof window replacement across Los Angeles, including homes near LAX in El Segundo and the South Bay, under the Burbank and Van Nuys flight paths, and along the 405 in Sherman Oaks and Encino. Contractors also quiet homes near the 710 in Long Beach and near Lincoln Boulevard in Santa Monica.
Soundproof Windows FAQs
Do Soundproof Windows Really Work?
Yes, when they’re rated for your noise and sealed well. A soundproof window replacement that moves you from about STC 27 into the high 30s or 40s makes traffic sound far quieter.
Can Any Window Block 100% of Outside Noise?
No. No true noise cancelling windows exist for homes. Good windows cut most noise, but some sound still travels through walls, roofs and vents.
Will New Windows Help If Your Walls Are Thin?
Yes, up to a point. Most walls rate around STC 43 to 48, so a window in the high 30s or 40s brings the weakest spot closer to the wall. Vents, mail slots and gaps under doors leak sound too.
What Are the Best Window Brands for Noise Control?
Pick by rating, not name. Ask any brand for the STC and OITC of the exact window and glass package you’re buying. Insert makers and window makers both publish these numbers.
Do Quieter Windows Also Save Energy?
Yes. Laminated dual-pane windows with low-E glass cut noise and heat together. See our energy-saving windows page.
Ready for a Quieter Home? Call (424) 230-8336
Call (424) 230-8336 or send photos of your windows through the form. Tell us what you hear and when, and a local contractor will send a written price for each window plus the STC they recommend.
PaneRight LA is an advertising and referral service, not a contractor. We connect you with independent local window contractors who may pay us for referrals. Calls may be recorded.