Date: Wed, 10 Mar 2021 11:36:11 -0800
Reply-To: christopher@T3TECHNIQUE.COM
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Christopher Schimke <christopher@T3TECHNIQUE.COM>
Subject: Re: Sound deadening material
In-Reply-To: <6D2DE507-F725-4783-A3D2-E429F68595F3@comcast.net>
Content-Type: text/plain; charset="UTF-8"
I purchased mine from a company called Sound Deadener Showdown. They are since retired, but have a ton of useful information on the website still. They explain all the different aspects of noise and how to deaden, block, and absorb it.
I would simply contact Cascade Audio directly through their website (cascadeaudio.com) to see where to purchase. However, other companies offer similar products. Google "mass loaded vinyl" and you will see that companies like DEI, Second Skin, and other's offer these products. Keep in mind that you can buy mass loaded vinyl in sheets without foam, but you need the foam to "decouple" the vinyl from the area you are trying to insulate for it to be most effective. For example, on Second Skin's website under "Sound Blocking" products, you will see that they offer "Luxury Liner" and "Luxury Liner Pro". Luxury Liner is straight mass load vinyl with no foam backing. Luxury Liner Pro has the foam backing.
I kept my factory insulation under the front carpet since it is contoured to allow the carpet to sit flat. Without it, the carpet sits a bit wonky. I put spray-on sound deadener in strategic places on the sheetmetal. Then I added the decoupled mass loaded vinyl (Cascade VB-4.5) to every square inch of the cabin from behind the dash, down to the floor, up on the wheel wells, and all the way to the back. Like I mentioned, for the area over the engine compartment and down the firewall, I added Cascade's VB-3. If you can't find a product similar to Cascade's VB-3 for over the engine compartment and down the firewall, you can use a layer of "hydrophobic melamine foam" with a layer of mass loaded vinyl over the top or a few layers of decoupled mass loaded vinyl. I added Cascade's VB-2 behind the front door cards, but you could simply attach a sheet of Second Skin's 1lb mass loaded vinyl sheet behind the door cards and side panels. I didn’t do it (I may in the future), but you can also add the hydrophobic melamine foam behind all the side panels in the van, than hand a sheet of mass loaded vinyl to cover the entire area, then install the interior panels.
For your headliner area, if you have the hard board type headliner, I would think that adding a layer of VB-4.5 or Luxury Liner Pro directly to the backside of the headliner would help. It's pretty heavy to try to attach to the inside sheetmetal. However, you may want to contact Cascade or Second Skin and get their opinion of how to handle that area. Maybe a few sheets of sound deadener (like your Fat Matt) with some of the hydrophobic melamine foam glued on top of that will do the trick.
-----Original Message-----
From: Eric Caron <ericcaron96@comcast.net>
Sent: Tuesday, March 9, 2021 4:07 PM
To: christopher@t3technique.com
Cc: Vanagon List <vanagon@GERRY.VANAGON.COM>
Subject: Re: Sound deadening material
Hi Chris and others,
This sounds like a nice advancement . And, if I’m reading correctly it can be used even if something like Fat Matt is all ready installed.
It also sounds like there are different versions for floors verses vertical surfaces.
I did a google search but didn’t get all the info I needed.
Anyone got some links to the different product? Anything about how to install in different locations?
And where to purchase?
I’m very interested in keeping my van as quiet as possible. And this is a upgrade I can do on my own!
Eric Caron
> On Mar 9, 2021, at 2:00 PM, <christopher@t3technique.com> <christopher@t3technique.com> wrote:
>
> Sorry, I don’t have an recommendations for what you asked for. I know you wanted recommendations for the butyl type stick on sound deadening, and I hope you aren’t offended by my suggestion for an alternative, but have you ever considered using something like Cascade Audio's VB-4.5 (or any of the other VB-series products)? I used to think that the stick-on products worked fairly well, and they do to a point, but after using VB-4.5 to line my Syncro's floors and walls, VB-2 behind the door cards, and VB-3 over the engine compartment and down the firewall behind the rear seat, I will never, ever go back to trying to cover everything with the stick-on products. A little bit of stick on product to dampen the sound transfer through the sheetmetal, but everything else in the decoupled loaded vinyl mass products. The difference is tremendous. Just throwing it out there based on my personal experience.
>
>
> -----Original Message-----
> From: Vanagon Mailing List <vanagon@gerry.vanagon.com> On Behalf Of Eric Caron
> Sent: Tuesday, March 9, 2021 10:38 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Sound deadening material
>
> Hi folks,
>
> I’m in the market for Sound deadening material with some water resistance. I’ve used Fat Mat with good success in the past. Price seems higher then I remember. Anyone have a suggestion for a good source or a good product that is foil covered and similar? I do not want the metal solution. This is a need for a Fat Matt type application.
>
> I’ll be using much of it on the roof top and inside my luggage compartment for sound deadening but also eventually for behind the fridge and cabinets on the one side of the van I have not covered yet.
> Much of my van is sound proofed with Fat Matt and the results were very positive.
>
> I think I need 5 millimeter but 8 would be fine as well.
>
> The water proof part is important. Anyone have experience with the Kill Matt product?
>
> Thanks.
>
> Eric Caron
> 85 GL Auto
> Coming home soon.
>
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