So I've had my 63 plate vRS TSI Estate for 4 months and 3000 miles now and although I knew about the '' booming noise'' before I bought it, 

 

I've decided to go down the sound proofing route to improve the drive.

 

The car is still a lot quieter than I'm used to after having driven a diesel for the last 8 years, but  because the engine is super quiet you can  

 

hear the rumbling noise in the rear of the car.

 

I've purchased Silent Coat 4mm from Amazon. A total of 23 sheets for £73

 

This should be enough to cover the boot floor and the rear wheel arches.

 

The scary bit now will  be the strip down of the boot to start installing the 4mm thick sheets.

 

I will take pics as I go and post on here for anyone interested to see.

 

Wish me luck as I may need some

 

Cheers

 

Jase

Interesting. In all honesty I can't hear anything out of the ordinary in mine.

+1 silent coat, used that stuff before for a non-car project.

 

Good luck with the stripping, I'd end up botching mine back together. 

Interesting. In all honesty I can't hear anything out of the ordinary in mine.

+1 silent coat, used that stuff before for a non-car project.

 

Good luck with the stripping, I'd end up botching mine back together. 

 

I've found it depends on the road surface mainly...

 

Driving on concrete motorways brings out the worst of the noise.

 

80% of the time its fine.

 

Maybe I like a bit of a challenge...

Save yourself some time and money, do the tyre well and see if you can live with that improvement alone. All the boom comes from that drum shaped part of the floor pan.

Regards

T

Good way/idea to refine your ride I would say!

I have already researched quite a bit in the topic and will do that in some 2 months (now I'm completely out of time).

http://www.briskoda.net/forums/topic/399052-soundproofing-octavia-iii/?p=4615277

There is a great www ( http://www.ahifi.cz/clanky/detail/skoda-octavia-3-odhlucneni-interieru-vymena-reproduktoru.htm ) where you can look for inspirations. Also mark that in some projects they state amount of material used, so that you can verify/correct your material qty estimate.

In my case I'll start with trunk (easiest) then do wheel pits+trunk and finally door. I guess key element will be tires at the end to put a cherry on the cake.

Good luck!

Edited 28 July, 20169 yr by wlange

Moving from an Elegance (hatch) to a VRS combi I find that the rear of the car is much quieter now, but the front end is noisier!

What tyres are you using at the moment - i'm pretty sure it's the Bridgestones that are the source of my noise.

Why not try the boot carpet from a later car?  My MY14 just had the thin carpet glued to a baord.  My MY17 on the hand has thick sound deadening on the underside of the carpet.

I wonder how mutch effect the Silent Coat will have when the noise is related to road surface... on a good road i hardly hear any noise but on roads with rougher surface it's bad. trying other tyres could be the way to go as a first step but very interesting to see if the silent coat works.

If the noise is a boom, it's predominantly low frequency, and stick-on material isn't going to do a great deal for that. I'd agree the OP should go with the "different tyres" option.

 

I'm assuming he is using the correct tyre pressures?

Edited 28 July, 20169 yr by Nepomuk

I've found it depends on the road surface mainly...

 

Driving on concrete motorways brings out the worst of the noise.

 

80% of the time its fine.

 

 

 

Have to agree. Even more so with the factory tyres. There is a section on the M42 (I think) which was nearly unbearable to drive on. Lucky it only lasted a few miles.

Can't say I've noticed an issue with mine but I've had the Skoda heavy rubber boot liner fitted since I picked up the car, may be worth a punt before stripping stuff out...

anyone who has done it could maybe inform us how much sound proofing is required for the boot and rear wheel arches? 

Moving from an Elegance (hatch) to a VRS combi I find that the rear of the car is much quieter now, but the front end is noisier!

What tyres are you using at the moment - i'm pretty sure it's the Bridgestones that are the source of my noise.

 

I'm running Continental SC 5 at the front and SC 2 at the rear. 

 

They are both rated at 72db

 

Will switch to Goodyear Eagle F3 (67db) when the Continentals need replacing.

Edited 28 July, 20169 yr by VRjest

I dont have the boom problem on my L&K, but with Bridgestone 225/40-18 it has more than enough wheel / road noise.

I'm going to sound proof it, and change tyres.

 

When I looked at the PR codes, there are two codes that made me curious:

3W6 - Additional interior noise suppression

2B0 - Without additional exterior noise suppression

 

Anybody know what this means?

I dont have the boom problem on my L&K, but with Bridgestone 225/40-18 it has more than enough wheel / road noise.

I'm going to sound proof it, and change tyres.

 

When I looked at the PR codes, there are two codes that made me curious:

3W6 - Additional interior noise suppression

2B0 - Without additional exterior noise suppression

 

Anybody know what this means?

I'm guessing its the way in which they are made, as in some internal features i.e dash have more sound deadening than others

I used bitumen pads (thin) for sound proofing to great effect when I built a kit car way in the past - made a huge difference

Edited 28 July, 20169 yr by bigjohn

Get rid of the standard fit Potenza tyres - they are *terrible* for noise.  I replaced mine at 200 miles on the car with a set of Eagle F1s - night and day. Plus I sold the original tyres for £200 so wasn't such a bad hit in the end.

I don't find mine too noisy but the audible noise is definitely the tyres and the SC2s are a bit noisy, mine are noticeably worse than my nokian winter tyres! (which are the same size)  I found some silent coat or similar on ebay and stuck a bit round the floor of the boot, including the spare wheel well, to see what it would do.  Can't say it made much difference.  I suspect the wheel arches are where a bigger differnce would be noticed, but I didn't have the time to get the trim/carpet up

I dont have the boom problem on my L&K, but with Bridgestone 225/40-18 it has more than enough wheel / road noise.

I'm going to sound proof it, and change tyres.

When I looked at the PR codes, there are two codes that made me curious:

3W6 - Additional interior noise suppression

2B0 - Without additional exterior noise suppression

Anybody know what this means?

The Scandinavian cars have extra insulation. It might be that.

Looking forward to how you get on as I find quite a difference depending on the road surface. Very noticeable on various sections on a motorway where there is a visible difference in the road surfaces and you can hear the noise change as the car them.

I've had my Octavia for three months and 3000 km.

The drumming/humming/droning noise has been extremely annoying since day one

but the Skoda people here aren't interested.

It's unfortunate because I quite like the rest of the car.

The noise in mine starts as early as 20km/hr and then never stops.

It doesn't really change much and is certainly independent of road speed and

engine speed and other mechanical affects. It does change loudness a little with road surface.

I have almost completely gone over it with soundproofing, but I am sure it has made

no difference.

I've also tried all the other tips on the forum like adjusting the hatch buffers and rear

seats up/down, etc.

Although I thought it was not tyres because it doesn't change with speed, I have recently

come across something called tyre cavity resonance which is to do with the space inside

the tyre, and this resonance is transmitted to the cabin. 

They found that the frequency of the noise is around 220Hz and that is exactly the frequency I get!

I've compared the frequency using an online tone generator.

Look it up on Google, there has been a lot of research on it.

So, I'm now convinced its my tyres, which are factory-fitted Dunlop Sport Maxx RT.

I shall change them prematurely for something known to be quieter.

Meanwhile, I turn the A/C and the radio up to stay sane!!!

Considering the effort and expense involved installing sound suppression I cannot say I've seen many subsequent complimentary reports on mk3s.

I remember the brochures from a couple of years back mentioning noise cancellation systems being available on the mk3 but cannot recall seeing any posts about it. Has anyone got it?

Is it effective, or prt of the problem?

I have a pair of really cheap noise cancellation ear buds and they are surprisingly effective in a noisy environment like a passenger jet so the technology works there.

I assumed it would be part of the Canton install?

Considering the effort and expense involved installing sound suppression I cannot say I've seen many subsequent complimentary reports on mk3s.

I remember the brochures from a couple of years back mentioning noise cancellation systems being available on the mk3 but cannot recall seeing any posts about it. Has anyone got it?

Is it effective, or prt of the problem?

I have a pair of really cheap noise cancellation ear buds and they are surprisingly effective in a noisy environment like a passenger jet so the technology works there.

I assumed it would be part of the Canton install?

 

 

Yeah I believe the Canton has the noise cancelling tech...

 

I wonder if it is on by default and is effective...meaning that the wide variety of opinions on here re: cabin noise may well be influenced by it!

 

It is funny - Given that a lot of folks have no problems and indeed, some seem to suggest that in their opinion their Octavia is "quiet" car (not compared to my 2009 Mazda 6 it ain't!) , I am not sure if there is a huge variance in the actual cabin noise between individual cars or whether some people are just more sensitive to it than others or maybe a little of both?

I've laid some bitumen based sheet on the spare wheel well as well as the flat space directly behind the seat. On top of that I have an Acoustic Carpet plus the reversible boot mat. To be honest I couldn't hear any reduction on the noise level. Perhaps treating the doors will yield a better result, the door skin is very tinny sounding and I doubt there's any sound treatment on the metal frame itself. 

 

I've pulled apart a Merc interior before, there's nothing special on the boot area, the wheel well is a bare metal with plastic covering. The doors however is a different story, Mass Loaded Vinyl lining the entire metal frame plus acoustic treatment on the skin itself, that's probably what makes the biggest difference. 

Yeah I believe the Canton has the noise cancelling tech...

 

I wonder if it is on by default and is effective...meaning that the wide variety of opinions on here re: cabin noise may well be influenced by it!

 

It is funny - Given that a lot of folks have no problems and indeed, some seem to suggest that in their opinion their Octavia is "quiet" car (not compared to my 2009 Mazda 6 it ain't!) , I am not sure if there is a huge variance in the actual cabin noise between individual cars or whether some people are just more sensitive to it than others or maybe a little of both?

If a car is fitted with noise cancellation then there must be a way of turning it off/on to determine its effectiveness or whether it is actually contributing to the problem?

My car is definitely not fitted with it, and I find it pretty quiet compared to other cars I have owned including the previous mk2.

Having said that if I let the tyre pressures get a bit low then it is a lot noisier and there is even a hint of the pressure problems that others refer to.

I'd agree there is an enormous amount of subjectivity regarding opinions. Pity we are not all equipped with noise meters