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Author Topic: DIY sound prf Mods ideas  (Read 5166 times)


  • Guest
DIY sound prf Mods ideas
« on: February 20, 2014, 08:27:55 PM »

Hi, great board! I hate sound coming into my home from outside. I live near 4 train tracks and 6 more within 1/2 mile!

I have cheapO aluminum windows DPane.

1. I want to make a wooden stopper to fix to the inside of the window seal. About 3" from the Dpane. USe silicone to fix new glass.
2. I was thinking about using 1/4" then putting some thick clear plastic sandwiched between a 1/8" pane. I found this 1/8" clear plastic at a store that uses it for those door covers to save utilities, like walmart from rear of store to inside, one can walk through it, usually with slits so it opens up. Either way, it will just give a cushion and or may turn yellow.
3. Sandwich it in and silicone it shut with another painted wooden seal strip all around to tidy it up.

What do you think?

Will the 3" space fill with moisture? already the alum frame has tons of mositure on it in the winter.


Randy S

  • Guest
Re: DIY sound prf Mods ideas
« Reply #1 on: February 20, 2014, 11:53:58 PM »

Your idea will give you some reduction as long as its air tight.
Use silica gel (desiccant) in between the window system to handle the moisture problem.

this is what we do for windows.


  • Guest
Re: DIY sound prf Mods ideas
« Reply #2 on: February 21, 2014, 05:39:21 AM »

Thanks for the Idea. I would rather take windows out and place with none mech window with 4-5" air space between panels. But I would like to move on to some thing else.
Couple things I am worried about with my DIY.
  1. Once I seal the glass in place, then maybe building up haze or discoloring kind of issues.
  2. 2nd floor, so need to research fire safety/evacuation issues.
  3. Moisture issues. I will silicone the alum mech window in place to try to get better seal. But if that or the descant will not to the trick then I will be forced to remove the mech window.

Also I plan to sheet rock the wall facing the train track. Another idea, I want to silicon 5/8" sheet rock, and rather then using screws, I want to try to squirt lines of silicon out on the rock and then gently push it against the wall. I am thinking the rows of silicon will trap sound and give a small air space from the other sht rock.

Any Ideas here? Anyone try these crazy things before?


Randy S

  • Guest
Re: DIY sound prf Mods ideas
« Reply #3 on: February 21, 2014, 05:00:59 PM »

Ok your window concerns are correct and we have had to deal with these type of problems in the past, this is why we do such a basic basic system. Having to solve the concerns you have for our clients became cost prohibitive.

Your idea for the sheet rock is a very old method done before the materials today where available. Green Glue has replaced that concept a long time ago...

For your problem the real bang for buck is decoupling the sheet rock from the structure and adding as much mass as possible.
You will be taking a risk of the sheet rock falling if you do not secure it.



  • Guest
Re: DIY sound prf Mods ideas
« Reply #4 on: February 22, 2014, 04:34:39 AM »

I agree with Randy, although the 'adding a layer of sheetrock' is not really a very old method.. just inappropriate. Note: doubling the mass of a partition will add about 5 dB sound transmission loss.

But your problem is likely to be LOW FREQUENCY... AND it is most likely structure borne or earth borne (trains! ~facepalm~). Nothing less than installing springs on your foundation or the complete room shell decoupled from the structure is required to reduce this noise/rumble to acceptable levels. (worst case)

Have you actually determined that the noise problem IS coming from the window? - and not the wall panel?
A way to test this would be to measure the room with an SPL meter to get a base-line reading, then temporarily install two layers of 5/8" drywall IN the window frame, sealed with weatherstripping and test again.

If after this test, your data AND your ears tell you that this is acceptable then go ahead with the window fix. If not, you may have the dreaded structure borne issue that I mentioned above.

Testing will save you a lot of frustration and guide you to the solution. ;)



  • Guest
Re: DIY sound prf Mods ideas
« Reply #5 on: February 22, 2014, 04:51:11 PM »

Ok Randy I will silcone the sheet rock and let it dry just a little so it will give me a nice stand off but rubber seal against the old. I am thinking this will trap some sound between the rock and then difuse it or I am going to use 5/8".

JH the house use to wobble when train went by, I completly redid the 2nd floor; new joists, cross braces and glue and scewed in 3/4" plywood. I also doubled and trippled up some areas. I am prood to say it took care of 50% and I still have downstairs to do!!

The window is cheap cheap. I have issue with ceiling, walls and window.

I would like to try this window trick I am thinking about.

1. Rip some 3/8" pine, trim out the window inside just to make glass flush with inside house.
2. Buy as thick as possible glass, maybe 1 or 2-3 different thicknesses.
3. Sandwich them using PVC clear 1/8" thick. I found this stuff its clear door strip peices used at open areas in warehouses or heavy trffice areas in businesses.
4. Silicone the glass in place making it 100% air tight!

NOt sure if the PVC will turn or cause issue, or if this will make water build up between the old window...

I may just take window out and build the wall solid, then put this solid sandwiched window in the sides with no mechanical moving parts. NO need.


  • Guest
Re: DIY sound prf Mods ideas
« Reply #6 on: February 24, 2014, 09:36:43 AM »


You're better off with ONE piece of the thickest glass you can get.. if you can get laminated or tempered, it's better.

several layers of glass with plastic between can/will develop condensation or soiling and is not recommended.