Octavia Wagon sound deadening

[SKODA vRS147]

Great to hear Mark, I second your comment that it's worth the effort. It cost me, what, 2 hours of time and about $70 or so of material (bought via Ebay) and glue to put the sound deadening material through out the boot, too easy and effective result.

If it is that effective and not that difficult maybe Skoda should be doing it on all vehicles.
Then owners would not have to strip down the car to add some sound deadening material.

PS No i am not watching that damn wedding.

[Transporter]

If it is that effective and not that difficult maybe Skoda should be doing it on all vehicles.
Then owners would not have to strip down the car to add some sound deadening material.

PS No i am not watching that damn wedding.

Why not? I'm multitasking.

To your, question why Skoda is not soundproofing the car better, it is all down to the cost. I didn't see one ordinary car that you couldn't improve by insulating it a bit better. Like they say, there is always room for improvement.

[MarksVRS]

If it is that effective and not that difficult maybe Skoda should be doing it on all vehicles.

How else can they convince people to fork out more money for a Passat? And hey, what's the point of owning a vehicle if you can't pull it apart to see how it works!!

[Rosie]

I am loving my new RS. Anyone who has ever owned a wagon knows, and is prepared to put up with the "drummyness" that goes with having a large airspace soaking up road noise. And the Octavia airspace is a little larger than most. This simple mod seems a very practicle thing to do. Not like me to think practically usually, but I'm keen to get on with this one.

I noted dazat has used Dynamat, but that stuff is expensive. MarkVRS mentions that he got material from RSOK, who bought it on eBay, but neither say what it is. Could you let us know please guys? It looks like a kind of felt matting.

I was thinking one material worth trying could be acoustic underlay, as used when installing floating floors, but this stuff is designed for adsorbing noises from impacts on the boards rather than absorbing ambient sound, or sound transmitted from vibration, so maybe noise reduction foam would be a better option.

Anyway, bottom line, if I'm going to buy something and cut it all to size I may as well get the most effective material I can afford. Any info from anyone with better knowledge of the subject than me more than welcome.

[Transporter]

Rosie, did you see this thread from other section http://www.vwwatercooled.org.au/f22/...mk1-41908.html ? Have a browse through other threads, heaps ofinfo there.

[RSOK]

Rosie, the stuff I bought off Ebay was a roll of felt matting, it has two felt layers with a thin layer of bitumen sandwiched between them.

Sellers were Geoff & Lisa.
Ph: 02 46312153
Mob: 0412 211591
autopartsonline@ozemail.com.au

Don't know if they're still in the business or not.

[brad]

I don't know what to buy either Rosie. I did a quick search of 'sound proofing" & "sound deadening" in Ebay and would like opinions on the following:

from Korea, 5mm thick; 0.5sqm; self adhesive but looks flimsy; doesn't appear to have mass, so wont stop drummy panels. $19 or =$38sqm

DBkill30; thickness unknown; 3.6 sqm in 15x 0.24sqm sheets, no idea about mass; self adhesive. $185 or $51sqm

edead; thickness unknown; 2.7sqm in a 0.3m x 9m roll with a bonus roller; dynamat style self adhesive butyl/alu. $175 = $65sqm

Sound deadener; 5mm thick; 3.35sqm in 9 sheets of 0.46 x 0.81; dynamat style self adhesive butyl /alu. $185 = $56sqm plus another $15 for a roller = $59sqm

Foam rubber; 5mm thick; 1.1sqm in a 1.2 x 0.9 sheet; self adhesive foam rubber; some mass but possibly a bit fragile? $41 = $38sqm

Aluminised foam; same as above but with a foil skin. $41 = $38sqm

from malaysia; 2mm thick; 0.59sqm in 0.98m x 0.6m sheets; material?? bitumen??/alu. $41 = $70sqm

I'm thinking the $59sqm butyl stuff but if somebody can recomend something cheaper...... BTW, I'm not overly keen about adding extra kilos to the car.

[kaanage]

Household carpet underlay would work well too - the heavy duty industrial grade rubber stuff would be best.
I have a friend who uses this for lining the inside of the speaker boxes that he builds.

[Rosie]

Thanks for all the input. I'm still doing my research. I came acroos some info regarding the effects of reasonance, which is what gives audio speakers, and acoustic instruments the ability to project sounds. Interesting to note what is said about the use of vibration dampers before racing out to "Buy the good stuff and cover everything". Here's the link. Sound Deadener Showdown - Your Source for Sound Deadening Products and Information

[Rosie]

Just thought I'd mention that a mate of mine recently had his carpet torn out and a timber floating floor put in. He said the layers were none too pleased that the old rubber honeycombed type underlay, which some sites recommend for sound deadening, had bonded to the floor surface (yellowtongue sheeting), and that they took 1 1/2 days to scrape it all off using a scraper that he described as a brick bolster on a long solid steel handle. Given the temps that the inside of cars get up to in summer, I thought it worth mentioning.

The other thing to note are the chemicals used in the manufacturing processes of the various synthetic rubber materials that might be used. The gasses given off by some of the products are doing more harm to us than just smelling bad. It's the same with boot mats. Buy the cheap ones and they smell bad and fall apart. The better ones are more expensive, but have no odour and last for yonks.

[woofy]

We are getting some carpet pulled up in our dining room and a floating floor put in, I at first thought we didn't have any underlay after looking at the layers under a heating vent in the floor, and then realised we do, its just been flattened...I'm betting its stuck to the yellowtongue at our place as well.....

[brad]

Stuck to our karri floorboards - but so was several layers of blackjack, newspaper, lino & a few skeletons. Floor sander dude just sanded it off. I'm guessing you can't do that with manufactured timbers.

Keep in mind that what is on the floor has been there for10-20 years (??) and walked on / had the carpet on top. If you bought some new stuff from the carpet shop it would probably last well & still be cheap. Lots of different underlays these days as well - foam, rubber waffle, rebonded, felt, acoustic (rubber & cork), etc.

[kaanage]

This is the stuff I'm talking about - it's natural rubber

[woofy]

Stuck to our karri floorboards - but so was several layers of blackjack, newspaper, lino & a few skeletons. Floor sander dude just sanded it off. I'm guessing you can't do that with manufactured timbers.

Keep in mind that what is on the floor has been there for10-20 years (??) and walked on / had the carpet on top. If you bought some new stuff from the carpet shop it would probably last well & still be cheap. Lots of different underlays these days as well - foam, rubber waffle, rebonded, felt, acoustic (rubber & cork), etc.

Its not a big section, and most likely if it was stuck in the rest of the house, we would just put the new underlay on top of it. Our place is 17 yrs old, but the carpet is most down trodden right where we are getting the floating floor put in (for that exact reason) so hopefully its ok.

[gldgti]

back on topic, you can buy 8mx2.4m of recylced foam rubber underlay with a plasticy foily type backing from bunnings for about $80. I've used in in my mk1s for sound deadening where i also didnt want to add weight and it does a reasonable job. Its just so cheap for such a big quanitity and id chemically inert.