sound insulation

timmyboy · Post by **timmyboy** » Sat Jan 20, 2007 8:09 pm

I'm preparing to fit my headliner and reading the 101 projects book it mentions 'several panels with foam sound insulation' above the headliner. My roof does seem to have the remnants of something stuck to the inside, slghtly foamy type stuff. What is it made of, is it stuck in and will it help stop condensation forming on the inside of the roof?

Thanks

jaymatwhit · Post by **jaymatwhit** » Wed Jan 24, 2007 8:40 am

We use acoustics in the building industry and as knowbody has replied about specific vehicle acoustics i thought this may help:

If you are not concerned about using the original "vehicle" sound deadening mat then you could look at Barafoam which is used inside air conditioning ductwork so has to be to fire regs etc. You can get it self adhesive or plain.

Please note that acoustic insulation is completely different to thermal insulation when checking them out.

If it was thermal insulation you require i would suggest Tri-Iso Super 10 (multi layed foils and cloths etc.), it does the same job as 100-200mm loft insulation but is 25mm thick and CLEAN! (no fibres)

There are lots of acoustic products from thin mastic like barrier mats to foams when you search, try
http://www.sheffins.co.uk/

Hope it helps.

IanMcLeod · Post by **IanMcLeod** » Wed Jan 24, 2007 9:39 pm

Stripped my headlining recently and got a good look at the sound deadening pads.

They looked original and from memory were 3 or 4 milimeters thick, black and almost like bitumen rather than foam. It looked glued on to me as there didn't seem to be any type of fixing holding it on. There were 3 or 4 wide strips running front to back. I have seen simlar stuff inside doors before to stop the door skins vibrating.

Hope that helps.

Ian.

Gary71 · Post by **Gary71** » Wed Jan 24, 2007 9:50 pm

It's to stop the roof reasonating more than anything else. Mine also was just a thin bitumen pad.

timmyboy · Post by **timmyboy** » Wed Jan 24, 2007 10:04 pm

So in theory any thin firm foam mating will do the job. Mine has completely perrished.

Gary71 · Post by **Gary71** » Thu Jan 25, 2007 7:52 am

Some 'dynamat' type material the ICE boys use to stop the cars buzzing will do the job lovely.

shambly · Post by **shambly** » Thu Jan 25, 2007 9:55 am

I bought my sound deadening from these guys when I sound proofed the chassis of my Chesil a while ago.

http://www.bodyshopwarehouse.co.uk/defa ... rodid=2656

Much cheaper than dynamat and really good stuff.

Simon