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Thrasher22
Samba Member
Joined: October 05, 2010
Posts: 858
Location: Calgary, Canada
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 Posted: Sat Jun 06, 2020 5:36 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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Has anyone tried putting flooring underlay over the engine bay area? This stuff advertises being "dense, closed cell foam" which sounds similar to mass loaded vinyl. I have some cork underlay kicking around I could try as well.
https://www.homedepot.ca/product/roberts-black-jac...od-floors/
It's not loud when I'm driving, but the constant engine noise really gets to me after a couple hours of highway speeds.
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1975 Westfalia - http://www.thesamba.com/vw/forum/viewtopic.php?t=516701 |
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vwwestyman
Samba Member
Joined: April 24, 2004
Posts: 5688
Location: Manhattan, Kansas, USA
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| Posted: Thu Nov 21, 2019 10:23 am Post subject: Re: Insulation / sound deadening thread FAQ |
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Looks like you're working with a Vanagon. Our Buses don't have the batteries up front under the seats, they're in the back with the engine.
I don't know why you couldn't use that stuff under the battery, though I know the compartments are pretty tight, so you'd want to be careful to not lift it up too much and cause fitment issues.
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Dave Cook
President, Wild Westerner Club
1978 Champagne Edition Westy, repowered to '97 Jetta TDI
1973 Wild Westerner
My Thing |
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Love77
Samba Member
Joined: September 25, 2019
Posts: 18
Location: Philadelphia
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| Posted: Thu Nov 21, 2019 10:06 am Post subject: Re: Insulation / sound deadening thread FAQ |
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I've seen on some other postings that people have put Butyl Automotive Sound Deadener Mat (like this https://www.amazon.com/gp/product/B0751CBXBT/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1) under their front seats to dampen sound noise from the wheel wells.
The question I have is since this is also where my AUX battery set up is, do people just install the components over the mat?
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LoviBus: 1990 Vanagon Westy 2.5 Subie |
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Joey
Samba Member
Joined: August 12, 2005
Posts: 5366
Location: Nova Scotia - Canada
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| Posted: Thu Mar 14, 2019 8:33 am Post subject: Re: Insulation / sound deadening thread FAQ |
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My '60 bus had Dynamat Extreme applied to the area under the rear bench/bed. I was looking for something under my rear bench/bed seat one day and noticed a few bulges in the Dynamat. I pushed on it and it felt spongy. I made a slice in the Dynamat and out came some liquid! It wasn't water as it was -7C that day. It it ended up being the de-greaser I used a few month earlier to clean the engine compartment. I've since removed the Dynamt. What a pain that was! There was some surface rust starting in the areas where the de-greaser was trapped under the Dynamat. The cargo floor and most of the interior walls was covered in some sort of black glue/tar goop. To remove that I had to use a heat gun, propane torch, plastic scraper and minerial spirits. Many, many hours was spent removing that goop....
I was surprised the floor wasn't more rusty as most of the drain holes were covered over with the goop. Being from California must of helped.
Be careful what you choose for insulation and sound deadener...
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Joey
‘60 Kombi - '74 Bus - '79 Panel - '65 Beetle |
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dirigible
Samba Member
Joined: September 28, 2009
Posts: 208
Location: Sudbury, ON Canada
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| Posted: Wed Mar 13, 2019 11:47 am Post subject: Re: Insulation / sound deadening thread FAQ |
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I've removed all the panels and OEM sound damping/insulation from the cavities, and I'm trying to determine what to refill them with. Here's what I've learned from this thread:
1. Don't use batting, because it absorbs moisture. (Agreed.)
2. Don't use FatMat-type solutions because it makes a mess. (Agreed.)
Are there any options I'm missing? I was happy with the noise-level of the OEM batting... I just want to achieve the same in the least destructive way possible.
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'71 Campmobile. |
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vwwestyman
Samba Member
Joined: April 24, 2004
Posts: 5688
Location: Manhattan, Kansas, USA
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| Posted: Fri Feb 08, 2019 11:36 am Post subject: Re: Insulation / sound deadening thread FAQ |
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| vwwestyman wrote: |
It will be a while before I can drive and see the difference, but I ordered a roll of this to try insulating the Westy with.
My main goal is to quiet down the diesel engine noise, but I think I'll try insulating with it in other places as I have panels off for whatever reason.
While I have the engine out, I plan to basically cut it in such a way as to fill all the open spaces in the fuel tank area, hoping to absorb as much noise as possible.
I chose it as it's not supposed to soak up water. I was looking at hydrophobic melamine foam, but pointed at this because it'll be more durable than the foam.
https://www.yahoosoundproofing.com/americamat.html |
The giant roll of insulation I ordered arrived last week but I haven't had ability to do anything about it due to either time or being too damn cold out!
I ordered a bit of this stuff:
https://www.amazon.com/gp/product/B0725ZHDPS/ref=p...&psc=1
I plan to install it next to the metal where ever I install that insulation mat, to prevent the mat from trapping water next to the metal. It should still be able to drain on out.
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Dave Cook
President, Wild Westerner Club
1978 Champagne Edition Westy, repowered to '97 Jetta TDI
1973 Wild Westerner
My Thing |
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vwwestyman
Samba Member
Joined: April 24, 2004
Posts: 5688
Location: Manhattan, Kansas, USA
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| Posted: Tue Jan 29, 2019 8:59 am Post subject: Re: Insulation / sound deadening thread FAQ |
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It will be a while before I can drive and see the difference, but I ordered a roll of this to try insulating the Westy with.
My main goal is to quiet down the diesel engine noise, but I think I'll try insulating with it in other places as I have panels off for whatever reason.
While I have the engine out, I plan to basically cut it in such a way as to fill all the open spaces in the fuel tank area, hoping to absorb as much noise as possible.
I chose it as it's not supposed to soak up water. I was looking at hydrophobic melamine foam, but pointed at this because it'll be more durable than the foam.
https://www.yahoosoundproofing.com/americamat.html
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Dave Cook
President, Wild Westerner Club
1978 Champagne Edition Westy, repowered to '97 Jetta TDI
1973 Wild Westerner
My Thing |
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oc92
Samba Member
Joined: November 30, 2005
Posts: 521
Location: NC
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| Posted: Tue Jan 29, 2019 6:26 am Post subject: Re: Insulation / sound deadening thread FAQ |
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no its cool... I already did the engine with spray foam 
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" ... he walked the pavement of the city- a beggar and a king. Has it been otherwise with any man?" WOLFE
72 bus
70 bug
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TomWesty
Samba Member
Joined: November 23, 2007
Posts: 3482
Location: Wyoming,USA
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| Posted: Mon Jan 28, 2019 10:55 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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| asiab3 wrote: |
| oc92 wrote: |
| ... what about the wooden rear seat on Westy? Would it make sense to put some sound deadening on the inside of the wood panels as well? Or do the Dynamat type products only work for sound resonating on metal panels? |
Your latter thoughts are correct- Westy wood doesn’t transmit vibrations like metal.
A few blankets over the engine go a long way too 
Robbie |
That’s just irresponsible. 
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If you haven't bled on them, you haven't worked on them.
Visit: www.tomcoryell.com and check out my music! |
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airschooled
Air-Schooled
Joined: April 04, 2012
Posts: 12729
Location: on a bike ride somewhere
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| Posted: Mon Jan 28, 2019 4:03 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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| oc92 wrote: |
| ... what about the wooden rear seat on Westy? Would it make sense to put some sound deadening on the inside of the wood panels as well? Or do the Dynamat type products only work for sound resonating on metal panels? |
Your latter thoughts are correct- Westy wood doesn’t transmit vibrations like metal.
A few blankets over the engine go a long way too
Robbie
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Learn how your vintage VW works. And why it doesn't!
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oc92
Samba Member
Joined: November 30, 2005
Posts: 521
Location: NC
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| Posted: Mon Jan 28, 2019 4:01 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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... what about the wooden rear seat on Westy? Would it make sense to put some sound deadening on the inside of the wood panels as well? Or do the Dynamat type products only work for sound resonating on metal panels?
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" ... he walked the pavement of the city- a beggar and a king. Has it been otherwise with any man?" WOLFE
72 bus
70 bug
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vwwestyman
Samba Member
Joined: April 24, 2004
Posts: 5688
Location: Manhattan, Kansas, USA
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| Posted: Fri Aug 17, 2018 3:23 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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| WestyPop wrote: |
| vwwestyman wrote: |
While I generally like driving my '78 with TDI motor, it is kind of noisy.
So I've been thinking of ways to quiet it down!
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FYI: '82-? Vanagon diesels (at least the Westfalia models) had a better oem mat/carpet inside the cab laying over the engine area than did the gassers. They were much more effective at killing the diesel's clacking song while heading down the road, and can be trimmed to fit a baywindow. |
I have seen some good-looking-if-expensive floor mat material out there that is supposed to kill sound too, which I was thinking about if this project doesn't do all I want it to do.
Any idea what the Vanagon mats were made of?
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Dave Cook
President, Wild Westerner Club
1978 Champagne Edition Westy, repowered to '97 Jetta TDI
1973 Wild Westerner
My Thing |
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WestyPop
Samba Member
Joined: February 08, 2005
Posts: 1732
Location: SoCal
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| Posted: Fri Aug 17, 2018 2:45 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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| vwwestyman wrote: |
While I generally like driving my '78 with TDI motor, it is kind of noisy.
So I've been thinking of ways to quiet it down!
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FYI: '82-? Vanagon diesels (at least the Westfalia models) had a better oem mat/carpet inside the cab laying over the engine area than did the gassers. They were much more effective at killing the diesel's clacking song while heading down the road, and can be trimmed to fit a baywindow.
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Never underestimate the power of stupid people in large groups.
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J.R.
68 Westy
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vwwestyman
Samba Member
Joined: April 24, 2004
Posts: 5688
Location: Manhattan, Kansas, USA
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| Posted: Fri Aug 17, 2018 11:35 am Post subject: Re: Insulation / sound deadening thread FAQ |
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While I generally like driving my '78 with TDI motor, it is kind of noisy.
So I've been thinking of ways to quiet it down!
Here's my tenative game plan; I'd like to get your thoughts.
I'm planning to pull the engine and fuel tank. I don't remember if I applied "dynamat" type stuff in there before. (I have a large roll of another brand name in the garage... Just don't remember the brand offhand.) If not, I'll do this.
Then for inexpensive sound absorbtion, I plan to fill the cavities around the fuel tank with mineral wool insulation. Everything I've seen is that mineral wool is very good at sound absorption, and I should not have to worry about it getting wet in this location.
Then in the area above the transmission (and very possibly in the engine compartment too) I will install the mat discussed in this thread:
https://www.thesamba.com/vw/forum/viewtopic.php?t=606406&highlight=above+transmission
Prior to installing that, I plan to clean up the under side of the firewalls above the transmission and seal them with Master Series paint, just in case moisture finds its way above the mat.
Somewhere along the way, I ran into mention of hydrophobic melamine foam as a great sound absorber that won't soak up water. If I'm not happy with the other measures (or just decide I want more insulation) I think I will begin installing this behind the panels inside the bus. May look into some kind of drainage mat made of woven plastic against the metal to provide a way for water condensation/water leakage that may occur to run away from the metal.
Something like this:
https://plasticomponents.com/pc-news/new-ultra-drain-mat-drainage-ventilation-system
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Dave Cook
President, Wild Westerner Club
1978 Champagne Edition Westy, repowered to '97 Jetta TDI
1973 Wild Westerner
My Thing |
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Hoody
Samba Member
Joined: November 28, 2007
Posts: 1948
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| Posted: Tue Nov 14, 2017 10:59 am Post subject: Re: Insulation / sound deadening thread FAQ |
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| If you want to use the best product go to Second Skin Audio's site and get the Damplifier Pro. |
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16976
Location: San Diego, California
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| Posted: Mon Nov 13, 2017 12:41 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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Bill Fowler recommends Rattletrap
https://www.amazon.com/FatMat-Self-Adhesive-Rattle...&psc=1
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Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
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white74westy
Samba Member
Joined: May 02, 2011
Posts: 777
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| Posted: Mon Nov 13, 2017 12:30 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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| aeromech wrote: |
Guys,
I'm doing some work on a 1971 camper. I want to put some kind of sound deadening material on the insides of the front door, the engine bay ceiling under the abs roof I'll be buyings, and around the gas tank area when it's removed. What do you recommend? I want something good with an adhesive backing I can cut to fit and stick on.
Thanks |
Hi Gary,
I used butyl tape. I haven't done the entire vehicle yet. I did the inside of the area, where the gas tank sits. It makes a difference. Do your homework, but essentially, that is what Fatmat, Dynamat etc. are made of. The problem is that people decided to go crazy and use asphalt impregnated products, such as window wrap etc. They were covering the entire vehicle. YUCK!
When you apply it, you only need a small amount to each panel. I hope this proves useful! Let us know what you come up with.
a |
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16976
Location: San Diego, California
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| Posted: Mon Nov 13, 2017 12:19 pm Post subject: Re: Insulation / sound deadening thread FAQ |
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So your answer is ask Skill?
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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Stuartzickefoose
Samba Post Whore
Joined: February 07, 2008
Posts: 10350
Location: SoCal for now...
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| Posted: Mon Nov 13, 2017 11:42 am Post subject: Re: Insulation / sound deadening thread FAQ |
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| aeromech wrote: |
Guys,
I'm doing some work on a 1971 camper. I want to put some kind of sound deadening material on the insides of the front door, the engine bay ceiling under the abs roof I'll be buyings, and around the gas tank area when it's removed. What do you recommend? I want something good with an adhesive backing I can cut to fit and stick on.
Thanks |
You complain I never call you...then you don’t call me! Haha
Fatmat or dynamite are good standbys. Rattletrap is another. Skills uses a 4th that’s really good too, but I gift which one. I would also suggest the back of the gas tank firewall too.
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Stuart Zickefoose
2011 Jetta Sportwagen TDi 6 speed manual
206-841-7324
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16976
Location: San Diego, California
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| Posted: Mon Nov 13, 2017 10:30 am Post subject: Re: Insulation / sound deadening thread FAQ |
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Guys,
I'm doing some work on a 1971 camper. I want to put some kind of sound deadening material on the insides of the front door, the engine bay ceiling under the abs roof I'll be buyings, and around the gas tank area when it's removed. What do you recommend? I want something good with an adhesive backing I can cut to fit and stick on.
Thanks
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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