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-   -   The Damping Material and Sound Deadener Thread (https://www.team-bhp.com/forum/car-entertainment/13307-damping-material-sound-deadener-thread-87.html)

Friends,
I own a 2014 Brio VX MT that has run about 50K, its a worthy all-rounder in both city and highway. While the car itself is running super smooth, the highway trips are not very comfortable due to NVH, especially for the back-benchers (which includes the home minister, unfortunately).

I had upgraded the tires to a 175/70 Yokohama BluEarth and they seem to have helped with the tyre noise. But road noise and bumps do enter into cabin and they get pretty hard beyond 80-85 KPH.

Has anyone attempted damping a Brio with any success in reducing NVH? If so, do share specific mods, I would be eager to perform them.

PS: I would also appreciate any good references to Chennai shops with good track record

Has anyone tried this Hamaan damping?

Amazon Link

I know that this Hamman is a cheap knockoff brand with China imported stuff, but how good will damping work?

I will be installing it in Tata NANO XTA 2016. Since the package has 5 sheets so 4 in the 4 doors (1 sheet per door) and 1 left on the engine cover in boot.

Should I take the plunge?

Please do not go for this -- though initially claimed as Butyl, they later admit it is tar(bitumen) based.

Many foam or butyl sheets (aluminium foil backed) are available on Amazon.
I have used one such long ago with fairly good results, but do not remember the brand. Look for one around 10mm thickness, and adhesive backed of course.

Does full body damping in 2016 Nano AMT make any sense?

My plan is double layer in doors and single layer in floor, boot and roof. On front, I will damp till knee height.

Double layer on safe surface isn't going to have double benefit. Instead, use damping material on door, foam between metal and door pads. Add foam in between all plastic and metal surfaces. Invest in better tyre.

Safe surface meaning? What do you mean by this?

Folks, I am in the last legs of buying a used Brezza ZDi and I am researching whether applying butyl sheet + foam damping on car doors, roof, wheel arches and floor (all from inside) will help to reduce road (tyre), traffic and wind noise? I have read most of this thread from the beginning and trawled through youTube videos and the opinions are mixed. Is there someone here who got this done recently? Can they provide feedback? Thanks!

Hello All,

My Beater Car, a 2012 Alto K10 unfortunately had some water ingress due to an incompletely closed window. I tried drying the carpet by parking in the sun while the keeping the doors open for a couple of days but I could still see water whenever we press the floor. I took the car to my trusted upholstery works and had the seats and carpets removed. We could see that the sound deadening mats under the carpet was soaked in water.



I have now wringed out the damping mats and the carpet and left them to dry in the sun. Both of them will be reinstalled after drying completely.

Since the ground work is already done, I am getting PVC lamination for the floor to ensure that the floor is easier to clean. And being the beater car in the family, this is always welcome.

My question here is that, will adding a layer of styrofoam sheet under the PVC lamination contribute towards some sound damping? I have got VibroFiltr damping for the floor in my Duster and I understand the difference it will make to the overall comfort of the car. I was just wondering whether the styrofoam available in the shop make a difference? The styrofoam sheets are inexpensive and available in plenty. I have heard that styrofoam has some sound absorbing properties, but will it work in this particular scenario?

Please share your personal experience/views.

Just handed over my car at Powerzone Chennai (Whites Road), they come highly recommended via some friends - apparently a bit pricey, but do a thorough job.

Been quoted 15k all in (I don't usually pay cash to avoid GST), with the actual product + install coming in at around 13k. All 4 doors would be done, I asked him to do the boot also as the sub area rattles like crazy when I listen to EDM, but he said that it really won't help given the overall space and structure of the sub housing.

He takes about 4-5 hours to do one car, so will be picking it up at around 530.

Will post a detailed report post picking it up

The product they use is their own inhouse one apparently.

I have firsthand experience with this lamination. I have it on the entire floor of my safari. SInce I use it as a farm vehicle occasionally, it's a boon, cleaning is a breeze, BUT It's a smooth surface and footmats slide a lot on it. PLS PLS PLS buy velcro and stick it to your footmats and the floor. It will go a long way in keeping you out of trouble. Sliding mats can get stuck under pedals. Huge problem. Alternatively, you can buy some clips for footmats. Perhaps something like this,



Styrofoam and thermocole like materials are used a lot in between roofs and floors above to help noise isolation. But it has to be real thick to have a perceivable difference. And in an alto, there will still be many ways noise can enter the cabin. But this will definitely reduce the vibrations felt on the floor. Since it's a relatively cheap material, I'd go for it, since it wouldn't pinch me much anyway.

I find it hard to believe that these materials would have much effect on sound at all. Main effect would be thermal, as this is the purpose of such stuff. Could be good to have a layer in the roof space under our hard tropical sun, but not for noise.

Noise and vibration reduction usually uses materials which are dense. Quite the opposite of expanded polystyrene.

In my opinion, styrofoam, thermocole etc. are okay for ceilings (I have one inch thick sheet myself) , but not on the floor. They will compress and become flat in places under load, and initially may be wobbly to step on. May even soften/melt/burn in spots just above the exhaust system on long runs.
Your original mat was of scrap shredded rubber & sponge compressed to form sheets. This material is popular with manufacturers for its low cost, but it absorbs and retains water, and disintegrates quite easily when old.

Somewhat more expensive than these, butyl foam sheets are better, I feel, for both sound and heat insulation. Pick ones with aluminum foil on one side, and adhesive on the other. Plenty of choices on AMAZON.IN plus other sites.

I have applied on floor, firewall, and bonnet bottom, with partial reduction in both noise and heat. Did it at home with maids helping ! In fact, they did 90% of the job when I showed them how !
See discussions a few pages back.

Please avoid the ones with bitumen base. They are heavier and soften when hot.

2017 Ciaz ZDi
Need advice on-
1. Doors, hood and boot, roof- insulation. The rain noise makes any conversation impossible.
2. Recommendation: Any service centre or applicator from Dadar to Thane is welcome.
3. Approx price for a worthwhile solution. I have been perfectly happy with the stock audio system, only now the job needs calls, while the driver drives to a site way outside Mumbai.
The car already has pvc lamination on the flooring and would that need to be removed to do floor sound proofing?
Thanks in advance for any suggestions.
Regards.

Mumbaikars can guide you on the first three points.
All I can say is that the floor lamination need not be removed. Take only the carpets out, and after sounproofing, fit them back in.

I would strongly recommend talking to Amol from Reliable Radio. He has outlets in Chembur and Lamington Road.

Spoke to him recently regarding XAV8000 installation in my Kia Seltos. Sounded extremely genuine. Asked him regarding Damping and he was upfront in saying that - new cars have fairly good build and is there any particular reason I want to damp. He in-fact said that just because the world is doing it, doesn't mean you need to do it.

I would trust him to give only genuine advise and not oversell in any manner !