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Author Topic: DIY Secondary Glazing with acrylic panels for heavy street traffic  (Read 3774 times)

bassmann

  • Guest

Hi there,

I've recently moved into my house and are finding outside traffic unbearable so I've been researching DIY acrylic panels for secondary glazing.

Here is some information I have so far:

Location: My house is located on the interection of 2 busy city roads. I get noise from the front and back and have to deal with traffic starting and stopping (including trucks).
Based on simple observation I have determined the windows are a weak link.

What I know:
- Low frequencies are a major problem
- Thicker panels have more mass and are generally better at absorbing low frequencies
- The gap depth is critical and ideally should be 100mm (4"") to tackle the low frequencies
- The installation MUST be well sealed.


Now for the questions:
- At best I think I can only get a 85mm gap (3.2""). How much worse off vs. 100mm will I be at addressing low frequencies?
- 6mm (1/4"") vs. 10mm (3/8"") acrylic panels? How much different will this make with a 85mm gap. Note the cost of the 10mm is about double that of 6mm panels.
- Does anyone have empirical data on the impact of gaps vs. panel thickness in secondary glazing installations. I am considering taking acoustic measurements so I can estimate the expected db SPL loss of various installations.
- Attching the panels - is magnetic tape the way to go? Why is it so popular? Are there better options (e.g foam seals, frames etc). The priority is sound reduction.
- Anything I have overlooked?

Thanks in advance
Bassmann

Chris J

  • Guest
Re: DIY Secondary Glazing with acrylic panels for heavy street traffic
« Reply #1 on: October 01, 2009, 01:46:17 PM »

Hi Bassman, what type of construction is your house?

Chris

bassmann

  • Guest
Re: DIY Secondary Glazing with acrylic panels for heavy street traffic
« Reply #2 on: October 09, 2009, 04:42:54 AM »

Hi Chris,

Sorry for tardy response...

House is brick veneer 2 story, tiled roof and timber windows.
The roof does not have insulation which I am installing polyester thermal and acoustic bats shortly 240mm thick. Hope this will reduce any sound from above by 6 - 8db.

Cheers Bassmann