Super Soundproofing Community Forum

Please login or register.

Login with username, password and session length
Advanced search  


Need an answer right now? Go to, or,  FEEDBACK

Or call us toll-free at 888-942-7723 8-5 Pacific time Weekdays. 

  If we're not in, send a email to

You can get a free report on soundproofing by going  HERE


Author Topic: Truck Traffic Noise from freeway.  (Read 7300 times)


  • Guest
Truck Traffic Noise from freeway.
« on: April 29, 2010, 11:59:29 AM »

I read this forum over and over, it seems as though the low bass like sounds from the trucks can't be contained.  But since it seems as though lot of people have this problem who are visiting this forum I am gonna try to update on my progress and whether it worked or not.  Basically I needed 2 windows of my masterbedroom replaced/added and contacted soundproofwindows about it.  The quote I got was about 1900 including installation for two windows with 45" W and 57 " H.  Seriously wanted to jump on this quote before finding out about this forum two days ago.  Since then just read the forum and searched keywords like freeway, trucks, and traffic over and over.

My conclusion is that before ordering and investing 2k on a window that might not block out any of the low freq sounds generated from heavy trucks going by at 70mph on the freeway behind me, I would try to invest on a foam plug first to see if it does provide any help in decreasing these noises.  The structural support seems to be the same concept, a second sound barrier behind the first window with a space between it to absorb and trap it.  I will order them probably this week and will update this thread with the results.  If it provides any sort of comfort to my ears than what I am dealing with now I will order the soundproofwindows.   Although lot of people seem to think milgard windows is a better option for both absorption of sound and appearance.  If anyone has any real life experience on soundproofwindows vs milgard windows I would appreciate it also.  I just wanted to start this thread because I would like someone to have contributed post results rather than questions, esp regarding this truck low frequency issue.  Thanks guys I really enjoyed this forum.


  • Guest
Re: Truck Traffic Noise from freeway.
« Reply #1 on: April 30, 2010, 02:53:51 AM »

Just looking forward to your result...


  • Guest
Re: Truck Traffic Noise from freeway.
« Reply #2 on: July 30, 2010, 05:33:28 AM »

okay sorry for the late reply but had some emergency health concerns that needed my attention.  have not been able to get either the windows or the foams in place because of more urgent issues.   just letting people know that the quote I got for a plug was 60% of the actual sound proof windows which means i would rather get the window instead.  am in the process of ordering one for the small bedroom that actually faces the traffic from the freeway due to my girlfriend who might move into that bedroom.  Will let you guys know after installation which might take a while.  The noise level on that bedroom is beyond tolerable.


  • Guest
Re: Truck Traffic Noise from freeway.
« Reply #3 on: June 04, 2011, 09:59:17 PM »

Did you install the interior windows? Did it work? I am thinking of ordering them to go over my old alumimum single pane windows but not sure whether to go with Sound proof Windows or Citi Quiet. My window sill is only 4 inches.
Take Care


  • Guest
Re: Truck Traffic Noise from freeway.
« Reply #4 on: July 06, 2011, 12:47:37 AM »

Is there any place where you can see the windows in action? Does either company have a showroom or can provide you with a customer or business that had them installed? Let us know what you ended up doing and how it went? I know low hz sounds are sometimes impossible to block as I work a lot with subwoofers in home theaters and many times if the theatre room isn't insulated and soundproofed, you can hear the bass throughout the house. Even with sound proofing, it's still difficult to contain low bass sounds.

Randy S

  • Guest
Re: Truck Traffic Noise from freeway.
« Reply #5 on: July 06, 2011, 04:06:52 PM »

A bit of information for those following this thread, soundproofing windows have a few basic principles.

1)Making sure the windows are air tight sealed is the first step. New glazing and seals.
2) Adding a second pane with a mass value (1/4" min - 3/8" diminishing point).
3) AND THE MOST IMPORTANT (the secret sauce so to speak) The Air gap size!!! the distance between original window and second pane... THE LARGER THE AIR SPACE THE LOWER THE FREQUENCY ATTENUATED AND THE MORE REDUCTION YOU GET!!!...

When we do recording studios and control room windows the air gap can be anywhere from 8" to 18" spread!!!! Now keep in mind that in a studio we can separate the frames of each a home you cant do this without building a new wall, so that will be where the sound path will remain at a certain value of transmission.