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hollowman's picture
Last seen: 4 months 6 days ago
Joined: May 28 2009 - 12:59pm
SONEX foam panel -- lifespan

You know what the basic panel looks like...

Bottom line: the foam will disintegrate after about 15-20 years ... and into a gummy MESS. And it'll get into the air, irritating resp. tracks and making you/pets cough and sneeze. And you'll never get off clothes and carpets and books .... the stuff is like tar!

On this issue, I contacted the manuf ... several times ... and finally got a very brief response... where the rep. said something like ... the longevity I noted is about normal. (NOTE: nowhere on the SONEX manuf. web site or in its MSDS datasheet is there any mention of foam-cell longevity/disintegration).

I have several $K invested in Sonex, and that was mostly from 15-20 years ago ... and that "investment" is about to go, on me. I would NOT have invested in SONEX if I knew its lifespan ... and about the mess it creates!

Maybe they improved the formula since earlier manuf. runs ... let us know if your listening room or studio has crumbling panels.


(seems this problem is well know with long-time Sonex users):

Google "POLYURETHANE FOAM" for more info.

geoffkait's picture
Last seen: 14 hours 37 min ago
Joined: Apr 29 2008 - 5:10am

The good news is that Sonex sucks.  You should notice considerably better sound after you throw it all out.  Yes, I know what you're thinking - "But all the recording studios use it!"  


cheers, Geoff Kait, Machina Dynamica

musicaddict's picture
Last seen: 9 months 1 week ago
Joined: Nov 19 2013 - 6:53am
If Sonex sucks, how's OC's 703 acoustical?

I hope it's okay because I have some on the way.  I'll be carefully enclosing it in fabric before very judicously applying it in our formal living/listening room.

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