@MartiniB Thank you the photos showing where to place the tape, followed your example, reassembled the complete armrest and taken the car out for a test drive around some very bumpy and twisty country roads and even used the armrest, and its as quiet as the church mouse and feels every bit the premium car it was always meant to be. Strange how some people have said that their car has no creaks or groans and others have, so I wonder if there was a supply problem of fabric tape etc at some point in time so they just pushed ahead with making cars minus the sound deadening in what they considered to be less critical areas?💯

Edited 14 June, 20232 yr by Graham Butcher

Hi - I have a 2021 Skoda Superb 1.5TSI Hatchback.

 

I'm trying to reduce the tinny / hollow / boom / empty barrel sound that is noticeable in the cabin that is tolerable but I'd like to improve if I can.

 

So far I've applied butyl mats to the boot floor and on the outside of the wheels arches (also added some 10mm closed-cell foam on the outside of the wheel arches as well), and I have done the B-pillar.

 

However, I believe the noise seems to be mainly coming from the boot and tyres. I don't have a spare wheel; there's a foam insert instead. As well as that I've covered the boot floor in 10mm carpet underlay and carpet but it doesn't seem to make a difference to the noise. When I tap the boot floor, it sounds hollow. I'm thinking of trying some thick Mass Loaded Vinyl to go over the floor. Has anyone tried this and if so did it make a difference? Are there any cheaper alternatives, e.g. gym floor mat etc?

 

I've also noticed that when I tap the tyres they sound very hollow and echoey, both on the car and off, irrespective of the pressure. They are Michelin Primacy 4s. Maybe replacing them (when they wear down) may help - maybe they are the cause of the echoey sound. On my last VW Passat the tyres made a massive difference to cabin noise. I remember replacing them once and the noise difference was night and day (can't remember what make they were).

 

Any advice on the boot floor and using MLV appreciated. Would also be interested if anyone else has the same tyres and experienced a similar issue (though I appreciate this may be covered on a different thread).

 

Cheers

Question regarding adding noise insulation foam under the rear seat bench of a Skoda Superb Mk3 hatchback.

 

I haven't taken it off yet as only want to do it once as I hear the fixings can go loose. Anyone had that problem? I therefore want to order the material ready and do it once.

 

Does anyone know if 10mm closed-cell foam is too thick to comfortable go under the bench without causing any fitting issues? I'm wondering if I should go for 5mm instead. I'm also considering using MLV but not sure if that would be more or less effective at suppressing road noise under the bench than closed-cell foam.

 

In regards to MLC, does anyone have any experience of using 2mm MLV (sounds too thin but may be fine) with any degree of success with it suppressing road noise / drumming (tinny noise). I'm also considering gluing MLV to the bottom of the car floor mats to save pulling up the carpet etc (cut to the same size as the mats so completely hidden out of view).

 

[I recently added sound deadening to the boot - layer of butyl followed by 10mm closed-cell foam and then carpet underlay on top but under the boot floor mat. I also replaced the styrofoam insert with a space-saver wheel. Big difference overall to road noise and drumming (always sounded very hollow and tinny over rough surfaces). It's much better but not perfect - still a little tinny (though significantly better), which is why I'm now considering doing under the back bench.]

 

Thanks.

19 hours ago, Bathos said:

Question regarding adding noise insulation foam under the rear seat bench of a Skoda Superb Mk3 hatchback.

 

I haven't taken it off yet as only want to do it once as I hear the fixings can go loose. Anyone had that problem? I therefore want to order the material ready and do it once.

 

Does anyone know if 10mm closed-cell foam is too thick to comfortable go under the bench without causing any fitting issues? I'm wondering if I should go for 5mm instead. I'm also considering using MLV but not sure if that would be more or less effective at suppressing road noise under the bench than closed-cell foam.

 

In regards to MLC, does anyone have any experience of using 2mm MLV (sounds too thin but may be fine) with any degree of success with it suppressing road noise / drumming (tinny noise). I'm also considering gluing MLV to the bottom of the car floor mats to save pulling up the carpet etc (cut to the same size as the mats so completely hidden out of view).

 

[I recently added sound deadening to the boot - layer of butyl followed by 10mm closed-cell foam and then carpet underlay on top but under the boot floor mat. I also replaced the styrofoam insert with a space-saver wheel. Big difference overall to road noise and drumming (always sounded very hollow and tinny over rough surfaces). It's much better but not perfect - still a little tinny (though significantly better), which is why I'm now considering doing under the back bench.]

 

Thanks.

 I used 100mm closed cell and the seat still fitted OK. I also was able to reuse the fixings, but no harm to replace them as you are doing.

Are newer Superbs quieter? The only fault with my previous Octavia was the level of noise and poor NVH. It's why I now drive an Audi instead of a Superb. It's clearly where Skoda save money during manufacturing but it's not as if they are cheap cars any more. You shouldn't have to go to this extent with a new car to make it comfortably quieter. I would like to return to Skoda because the dealers are so much better than the universally dreadful Audi dealers

35 minutes ago, harrylime said:

Are newer Superbs quieter? The only fault with my previous Octavia was the level of noise and poor NVH. It's why I now drive an Audi instead of a Superb. It's clearly where Skoda save money during manufacturing but it's not as if they are cheap cars any more. You shouldn't have to go to this extent with a new car to make it comfortably quieter. I would like to return to Skoda because the dealers are so much better than the universally dreadful Audi dealers

Speaking as a person who has had a mk2 L&K Superb and now a mk3 L&K Superb, I can honestly say that in my view the mk2 was far quieter and far better built than the mk3. 

My 2021 superb (mk3) is very quiet on smooth tarmac but can be rather noisy on other surfaces (but much improved after adding sound proofing to wheel arches and boot which is easy and relatively cheap job to do. Quite satisfying too.). My previous car, which was a 2016 passat, definitely seemed quieter and more solid. The superb does seem lacking with sound proofing. However, I believe the tyres have a lot to do with road noise. On my superb I have michelin primacy 4s. Not sure if they are mostly behind the road noise (too expensive to replace to see. Lots of tread left). The Passat was either Dunlop or Goodyear (trying to remember). I remember one time I put on a different make on the front of the Passat and it was incredibly noisy like a very worn wheel bearing.  I quickly replaced it. Tyres can make a massive difference.

Does anyone have any experience of using Mass Loaded Vinyl (MLV) on the floor of the car, including under the rear seat bench, with any degree of success with suppressing road noise?  I'm tempted to buy some but it's very expensive. Also not sure I 2mm would do much, but appreciate it’s very heavy which helps to block noise.

You are so right about the choice of tyres makes a lot of difference, I always look for tyres that have the best wet grip combined with the lowest db rating I can find. Also, new tyres are also far quieter than worn tyres so I guess that is down to the amount of rubber between the road and the wheel, i.e, more tread depth and so more ability to flex and absorb more of the undulations of the road and stopping them being transmitted though to the car. 

While it's certainly not great, my MK3 Sportline is acceptable in terms of road noise. I've not added any sound deadening either.

 

For reference, 2019 model with Goodyear Asymmetric 5 tyres (245/40/19). 

 

Tapping the body panels though, they sound really hollow. No where near the quality of my last 2 VW Golf's or BMW m140i. Even my wife's Alltrack is better screwed together.

 

 

The Superb is no longer a 'cheap' car, if I had bought new some of the noise and quality issues would grate. I bought used at a year old back when used cars where cheap so it is easier to forgive her feelings.

 

Overall though it is such a well rounded car it is easy to overlook some of the weaknesses.

11 minutes ago, Steviedakota said:

The Superb is no longer a 'cheap' car, if I had bought new some of the noise and quality issues would grate. I bought used at a year old back when used cars where cheap so it is easier to forgive her feelings.

 

Overall though it is such a well rounded car it is easy to overlook some of the weaknesses.

I think you're right, maybe this VW's doing to pay them back for actually making the Superb such a roaring success that it sold better in the UK than the Passat did so they have been told to cut a few corners to save money and as a consequence the Passat now seems to be a better screwed together car but not as roomy as the Superb, does that make sense of the position?

Hi,

I've done quite a bit of sound deadening on my Superb, and have gone through the really useful tips on this thread. 

I used a precut kit from https://www.nkgroup.co.uk/ (no affiliation) which allowed me to install footwells and sides of the transmission tunnel by simply removing the plastic sill covers on each side of the car. 

Has anyone tried the chassis dampers from other manufacturers? 

Also, does anyone know the part codes for the acoustic side window glass? 

 

Images of my work attached

On 02/08/2023 at 11:09, Bathos said:

Does anyone have any experience of using Mass Loaded Vinyl (MLV) on the floor of the car, including under the rear seat bench, with any degree of success with suppressing road noise?  I'm tempted to buy some but it's very expensive. Also not sure I 2mm would do much, but appreciate it’s very heavy which helps to block noise.

I have bought a roll and laid it on the floor and perhaps some other spots. I cannot speak to its effectiveness

as

I also had butyl added so cant tell what is the bigger contributor to silencing

Pozdravljeni.
Najprej hvala za veliko koristnih nasvetov glede zvočne izolacije, gotovo mi bo koristilo pri mojem projektu utišanja superba MK3.
Naročeno imam spodnje:

https://www.amazon.de/-/en/Alubutyl/dp/B017UG50PG/?_encoding=UTF8&pd_rd_w=4JYct&content-id=amzn1.sym.cd6be068-7dfd-4c5d-9b78-b50b0cc58556%3Aamzn1.symc.fc11ad14-99c1-406b-aa77-051d0ba1aade&pf_rd_p=cd6be068-7dfd-4c5d-9b78-b50b0cc58556&pf_rd_r=BKM2V1XXVE230F4003ZF&pd_rd_wg=ZZhxc&pd_rd_r=a4808b47-855e-4f04-a423-1045b5c44042&ref_=pd_hp_d_atf_ci_mcx_mr_ca_hp_atf_d&th=1

https://www.amazon.de/-/en/gp/product/B07NL8M4H2/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1

Ker imam na delovnem mestu možnost dobiti ht/armaflex 13-99/e, me zanima ali lahko kje uporabim to izolacijo? Sicer nima vgrajenega lepila, tako da bi moral uporabiti lepilo. Izolacija je sicer prvotno namenjena kot temperaturna izolacija. Je zaprte celice, debelina 13mm. Po občutku bi rekel da precej zaduši tudi zvok.
Potem se pojavi vprašanje, s kakšnim lepilom to lepiti?

https://www.schiessl-kaelte.com/en_IT/Shop/Mounting-material/Insulation-fire-protection/Insulating-plates/Armaflex-sheet-endless-HT-13-99-E-13mm-SU-8qm~p398947

Why not use this as it has adhesive on it:

 

sourcing map 236mil 6 mm Insulation Boards Audio Stereo Sound Acoustic Noise Absorbing Damping Mat Car Sound Insulation Sound Insulation Cotton Black 50 x 80 cm : Amazon.de: Automotive

 

I used this one for my boot area:

 

Noico RED 315 mil (8 mm) 9,5 sqft (0.9 sq.m) waterproof Liner - Noico

Hi. What is the easiest way to partially remove the front side carpet so I can add some soundproofing? I don't want to dismantle the center console.

I imagine you want to work on the footwells and area under the feet? Your access will be extremely limited... my experience in other cars is that you can remove the plastic trim on the doorsills, but this will barely get you a hand in ... is tight.

You need to remove at least the front seats to be able to lift the carpet enough ... and by then might as well remove all interior and do it at once.

yes that's right, I want some extra insulation under my feet. Okay, the front seats probably aren't that hard to remove. Will it be easier to lift the carpet then?

So far I have insulated the trunk, hood, rear doors, all 4 wheels from the outside. There is already a significant improvement, but the noise of the winter tires (Y2021, continental 215/60R16) still bothers me. I plan to insulate the front doors, I hope there will be some changes. Finally, I am thinking of insulating the floor, but I would not like to remove the entire lining.

Hey everyone,

I have a superb facelift from 2020 and I'm not happy with the tire noises - especially on bad roads or/and speed greater 100km/h.

I’ve already done quite a bit of soundproofing: doors, floor (from the front footwell all the way to the spare wheel well), wheel arches behind the trunk trim, wheel arches from the outside (behind the fender liners), and I’m using foam-lined tires.

It’s a little better now, but still far from really silent. What else can I do to improve the sound insulation? Any tips or specific areas you’d recommend focusing on?

Thanks 🙂

Well, you have really attacked all areas worth ... attacking!

There is not much left, you could look into the "double-glazed" windows available to some upper models, but I think you went into everything ... sorry.

Yea my superb already have the accustic windows at the front doors.

Then it seems like I have to deal with the current sound level

@AMDFX Had your tracking checked recently? I notice more noise from just minor incorrect tracking.