Freeway traffic
Tyre roar and engine noise from I-10, I-215 and SR-210 run day and night. Close to the lanes, the heavy trucks add a low rumble under the hiss of the cars, and that rumble is the harder half to stop.
Soundproof Windows for San Bernardino Homes Near the Freeway and Rail
San Bernardino Window Replacement is San Bernardino County's leading source for soundproof windows in San Bernardino, CA, specializing in laminated glass, asymmetric dual-pane windows and sealed replacement frames. We offer acoustic PVB interlayers and full-frame noise upgrades.
- Free in-home measure
- Written quote, opening by opening
- NFRC label values on paper
About soundproof & sound-control windows with us
Our team provides whole-elevation window replacement on the side of the house that faces the traffic, delivering quieter bedrooms and a calmer living room for both residential and commercial projects. We write the tested STC and OITC ratings for the exact glass makeup on the quote, and the installer who measures every window opening is the one who seals it into the wall.
From pairing a laminated lite with a thicker outer pane to closing the gap between the frame and the stucco, our team handles every detail. Serving San Bernardino, Redlands, Upland and Rancho Cucamonga, we start with the bedrooms that face the noise and finish the whole elevation as one job.
Why San Bernardino Window Replacement
How We Work
The installer who measures your openings is the one who sets the new windows, from the first visit to the final walk.
Measured by the installerEvery opening sized by the person who sets the unit
Quote in writingFrame, glass package, U-factor and SHGC listed per opening
Sill flashed and testedFlashing and a water test before any trim goes back
Tidy siteFloors and furniture covered, old units hauled away the same day
Where the Noise Comes From in San Bernardino
Most of the noise in San Bernardino bedrooms comes from three sources: the freeway junctions, the rail corridor and the airport, and each one asks something different of a window. The city sits where Interstate 10, Interstate 215 and State Route 210 meet, and the neighbourhood of Muscupiabe is boxed in so tightly by SR-210, SR-259 and I-215 that locals call it the Triangle.
Freight and passenger rail
BNSF runs an intermodal freight yard in the city, and the historic Santa Fe Depot downtown is a stop on the Metrolink San Bernardino Line and Amtrak's Southwest Chief. The Arrow service, opened in October 2022, carries trains on toward Redlands. Locomotives and freight cars put out deep, low-frequency sound that travels through ordinary glass.
Aircraft
San Bernardino International Airport sits about two miles southeast of downtown on the former Norton Air Force Base. Its 10,000-foot runway can take the largest aircraft flying, it is a hub for Amazon Air cargo, and Breeze Airways has flown passengers from it since August 2022.
Why the source matters
Traffic hiss and speech sit in the middle and upper frequencies, which most dual-pane glass already handles reasonably well. Rumble from trucks, trains and jet takeoffs sits low, and fixing it takes a different glass makeup, which is why the first question at the measure is what you hear and when.
STC and OITC Ratings: How Window Noise Is Measured
Window noise performance is measured with two ratings, STC and OITC, and for a home near a freeway or rail line the OITC number is the one to compare. Both are lab ratings with higher numbers meaning better insulation, but they weigh sound differently.
STC, Sound Transmission Class
STC is calculated under ASTM E413 from lab tests across sixteen frequencies from 125 to 4000 Hz. It was built around speech, so it is good at judging voices through a wall and weaker at music, machinery and traffic rumble. A typical single pane rates about STC 27, and ordinary dual-pane windows land around STC 26 to 32, which is why plain dual-pane glass is not a noise upgrade on its own.
OITC, Outdoor-Indoor Transmission Class
OITC, defined by ASTM E1332, counts frequencies down to 80 Hz and weights the low end more heavily. It was made for outdoor sources such as road traffic, rail and aircraft, and it is the rating normally used to select exterior glazing.
Why the two can disagree
A strong STC number does not guarantee a strong OITC number, because the two are not linearly related. One glass makeup can look excellent on STC and only middling on OITC, so a quote that lists only STC for a freeway-side bedroom leaves out the number that matters most. Lab figures are also measured on a test specimen, and a window installed with gaps can perform well below its label. A difference of one or two points between similar units is not something a person can hear, so the comparison worth making is between makeups, not decimals. That is why the quote names the tested ratings for the exact unit and glass makeup proposed, measured to the window standard ASTM E1425 where the manufacturer publishes it, rather than a figure for the glass alone.
Laminated Glass and Pane Spacing
The glass makeups that beat traffic and rail noise use laminated glass, panes of different thickness and a wider air space, and they do better than simply adding a third pane. Each of those choices goes on the written scope by window.
Laminated lite
Laminated glass bonds two layers of glass to a plastic interlayer, usually PVB or EVA. Compared with a single pane of the same thickness it significantly improves sound attenuation, and an acoustic grade of PVB goes further than the standard interlayer. It also holds together when broken, which makes a window harder to force, and a suitable interlayer blocks nearly all ultraviolet light, so the carpet and furniture by a west-facing bedroom window fade less.
Unequal pane thickness
Two panes of the same thickness tend to vibrate at the same frequencies, so sound that gets through one passes the other. Asymmetric glazing, for example a thicker outer pane with a thinner or laminated inner one, breaks that match. Glass maker Guardian's acoustic guidance names combining different glass thicknesses in one makeup as an added gain.
A wider air space
A larger air space between the panes improves noise insulation, within the depth the frame can hold. That depth is one reason the frame choice and the glass choice are made together rather than separately.
Why a third pane is not the shortcut
Guardian's own estimates show a triple-pane unit of equal panes scoring lower on OITC than a dual-pane unit with one laminated lite. A third pane adds weight and cost for heat, not for low-frequency noise, so it is offered when it earns its place, never as the default noise answer.
Sealing the Opening
The gap around a window frame often lets more sound through than the glass itself, so a noise upgrade that ignores the seal wastes the glass. Even a small open crack lets sound bypass the best laminated pane, the same way an open door bypasses a thick wall.
- Old aluminum sliders on valley ranch homes often have worn weatherstrip and gaps at the meeting rails, and they leak air and sound at the frame long before the glass is the weak point.
- On a retrofit, the new frame is sealed to the old one outside with drainage gaps kept at the sill, then air sealed on the inside, so the path around the frame is closed.
- Where the old frame is loose, out of square or damaged, the window comes out full-frame and the new unit is flashed and sealed into the rough opening.
- Fixed panes and tight-closing operable styles seal better than a loose slider; where a bedroom only needs ventilation from one sash, the scope can say so.
- The patio slider on the same wall is quoted with the windows, because a leaky door on the freeway side undoes the quiet bedroom beside it.
Before trim goes on, every opening is checked closed for gaps, and the walkthrough at the end happens with the windows shut on the noisy side so you hear the result yourself.
What Sound-Control Windows Cost in San Bernardino
Sound-control windows in San Bernardino are typically estimated at roughly $1,000 to $3,000 per window installed, and the glass makeup moves the price more than anything else. Because a quiet bedroom needs every opening on the noisy wall treated, the job is quoted by elevation, which puts most homes well into five figures.
What moves your number:
- How many openings face the noise, and how large they are, including the patio door on that wall.
- The glass makeup: laminated or acoustic laminated, the pane thicknesses and the air space depth.
- Frame material, since vinyl, fiberglass and clad frames hold different glass depths.
- Retrofit versus full-frame, with stucco cut and patch on any opening that needs the old frame out.
- Operating style, custom shapes and grids, and tempered glass where the code requires it.
- Second-storey access, interior and exterior trim, hauling away the old units, and permits where required.
Apartment owners and association boards with buildings along I-10 or I-215 can request a bid by unit count and elevation, with the same glass makeup specified across every unit that faces the road.
All of these prices are estimates and subject to change. The final price is set in the written quote after the free in-home measure, and it depends on the opening count, the laminated makeup and the install method.
Homes Near the Noise, Across San Bernardino and Beyond
Sound-control windows suit any home where a bedroom faces the traffic, the tracks or the flight path, from Muscupiabe inside its freeway triangle to the streets around the downtown depot and the neighbourhoods closest to the airport. The rail line that runs on toward Redlands brings the same question to homes there, and freeway-side homes in Upland, Rancho Cucamonga and Highgrove are measured the same way: what you hear, which wall it comes through, and which makeup the OITC numbers support.
Frames, Glass and Openings
The process
How a Window Job Runs
Four steps, and nothing is ordered until you have signed off on the written quote.
The measure
We look at every opening with you, check the frames, the sills and the stucco around them, and measure each one for the unit that will go in it.
The written quote
Frame material, glass package, label values, install method and the order date arrive in writing. For a community or a commercial building the work is split into phases, so every resident or tenant knows their day.
Install and flash
Old units come out, openings are checked for water damage, and each new window is set, flashed and sealed, with a water test at the sill before trim goes back.
The final walk
We open and lock every window and door with you before calling it finished, and adjust anything you flag.
Also from our installers
Related Window and Door Work
Questions
Soundproof & Sound-Control Windows: Common Questions
Which windows block the most freeway noise?
For freeway and truck noise, windows with a laminated lite, panes of different thickness and a well-sealed frame do the most, and the OITC rating is the number to compare. Plain dual-pane glass with two equal panes helps far less with low rumble than its STC number suggests.
Is triple-pane glass better for noise than laminated glass?
Usually not for traffic and rail. Published glass estimates show a triple pane of equal panes rating lower on OITC than a dual pane with one laminated lite, so laminated, asymmetric glass is the usual starting point for noise.
What STC or OITC rating should I ask for?
Ask for the tested OITC and STC of the whole window in the exact glass makeup proposed, not a centre-of-glass figure. Compare makeups by those numbers, and ignore a gap of one or two points, which nobody can hear. The quote lists both for each window.
How much do soundproof windows cost in San Bernardino?
Soundproof windows are typically estimated at roughly $1,000 to $3,000 per window installed in San Bernardino, depending on the laminated makeup, the frame and the install method. A full freeway-side elevation is the usual job. Your written quote sets the final price.
Will new windows make my house silent?
No window makes a house silent, and any company that promises it is guessing. Walls, roof vents, doors and attic spaces carry sound too. The right glass and a sealed frame take on the part that comes through the openings, which is usually the loudest part.
Can I replace only the bedroom windows?
You can start there, but the quote covers the whole wall that faces the noise, because sound comes through the weakest opening on it. Many owners do the noisy elevation first and the rest of the house in a later phase on the same written scope.
Do laminated windows do anything besides cut noise?
Yes. Laminated glass holds together when it breaks, so it is harder to force, and a suitable interlayer blocks nearly all ultraviolet light, which slows fading on floors and furniture near sunny windows.
Do you bid apartment and HOA buildings near the freeway?
Yes. Send the unit count, elevations or plans, and the bid will specify one glass makeup for every unit facing the road, with the work phased around residents and the tested ratings listed in the submittals.
Free in-home measure
Talk to us about soundproof & sound-control windows
Homeowners get a free measure at the house. Boards, managers and contractors can send plans or an opening count for a bid.
Calls only, we do not receive text messages.