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Topic: Sound and heat insulation for front end cap (Read 1508 times) previous topic - next topic

Sound and heat insulation for front end cap

I had to remove the deteriorated foam insulation in the front end cap of our coach... behind the electronics cabinets.  Same with the sound insulation on the inside of generator bay door.  There are a lot of choices of self-adhering closed cell foams available.  Here is one from Amazon.  It is 1/2 inch thick and does not have an offensive smell like many rubber products do.  What do you think?

Amazon.com: Vibro 455 mil-1/2 Thick-Sound Dampening Insulator-100% Waterproof...

Thanks in advance for any input!

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George Hatfield

  Never ever use World Line Motors of Nacogdoches for service!

Re: Sound and heat insulation for front end cap

Reply #1 –
That looks pretty good George. I just used the silver bubble wrap stuff that you can get at Home Depot for the front cap. No sound barrier but does insulate for heat and it's easy to put in there.
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: Sound and heat insulation for front end cap

Reply #2 –
George - I also need to replace the same pieces on my RV. I won't be able to get to my project for a few weeks. Please let me know how that product works out. I might follow your lead!
2002 U270 34' Build 5953
Cummings ISL400HP
3410 Floor Plan
Longview, TX

Re: Sound and heat insulation for front end cap

Reply #3 –
Just finished doing mine,used a layer of Noico foil backed and a layer of EZ cool over that,that area needs more for heat then
sound.Replaced my speakers and built enclosures for them out of insulation board,keeps them dust free and is better for the sound.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: Sound and heat insulation for front end cap

Reply #4 –
I am looking at using closed cell spray foam, has anyone used that?
Chris
1999 U 320 DGFE
Build Number 5523
Chris & Elka Lang
In the field, Lonoke AR

Re: Sound and heat insulation for front end cap

Reply #5 –

Here is another product and the Amazon reviews have several from RV owners that have used it with good results with both sound and heat control.

Amazon.com: Dynamat 11905 Hoodliner 32" x 54" x 3/4" Thick Self-Adhesive...

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George Hatfield

  Never ever use World Line Motors of Nacogdoches for service!

Re: Sound and heat insulation for front end cap

Reply #6 –
I don't think your going to like the looks of the spray foam Chris.I can't get the photos of mine to post here but I used the silver back product that MOT sells and it looks pretty neat. I can't for the life of me remember to look at the invoice to get the name but will try to remember tomorrow. It's the only insulation they sell and I used what was left from my engine bay. I've not driven the coach since install so I can't testify to the performance of it. I hope it cools off my bed room but again I don't know. I paid 12.00 per yard for it. MOT swears by it but I hardly expect them to say it's no good. I would get the name now but the bus is locked inside it's building. Hold up on the spray foam because that stuff is permanent and if your end cap is like mine it has see thru tint doors.
Dub McBride 1996 270

Re: Sound and heat insulation for front end cap

Reply #7 –
Dub, I'm in no hurry and I'm always open to suggestions
Chris
1999 U 320 DGFE
Build Number 5523
Chris & Elka Lang
In the field, Lonoke AR

Re: Sound and heat insulation for front end cap

Reply #8 –
 Closed cell foam is great for it's insulation value but horrible for sound deadening.  Due to its rigid nature it transfers sound vibrations very well. Now closed cell foam with some type of sound absorption material on top would be killer.
Luke & Sandy (still many work years to go...)
1999 U320 36 Build #5387
2013 Jeep Wrangler Unlimited
Previous 1997 Winnebago Vectra Grand Tour 35WQ major interior remodel
Previous several SOB trailers, Class C, fifth wheels.

Re: Sound and heat insulation for front end cap

Reply #9 –
When I insulate the Front cap, I will use the same material I use for the engine room. It is a product called Soundown and comes in various thicknesses, from a half inch to three or more inches thick.  It is not self stick, and the installation in the engine compartment has some requirements that are a little tricky, but I like the end result. I used inch and a half material for the engine and will use the same for the generator and front cap.
Don
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Don & Tys
1999 U270 3602 WTFE #5402
Xtreme Stage 1 w/Headlight, Step Conversion, etc.
2009 Honda Fit Sport with Navi
Freedom is NOT "just another word for nothing left to lose"... with apologies to Kris Kristofferson

Re: Sound and heat insulation for front end cap

Reply #10 –
Another product that you might consider is Lizard Skin Insulation.  It comes separate, one is thermal, the other is sound. It seems pricey at first, but when you compare total square foot coverage, it's not as bad as it seems compared to DynaMat and some of the others.
You do have to spray it on, but it does a very good job covering all the " nooks and crannies".
I sprayed the underbelly of my gas rig from the mufflers forward to the engine bay and it was amazing the difference it made, both in sound and heat.
It may be worth taking a look at for you.  Their website has some videos that show what the product does.
Mark & Bev
2001 U295 36' Slide
Cummins ISC 8.3 350HP
Build #5802
Jeep Wrangler Toad

Re: Sound and heat insulation for front end cap

Reply #11 –
The name of the insulation I get from MOT is Thermozite. I don't know that it's any better or worse than any of the other products. It does look nice but I know that's not the main objective. Looks like if anyone wants to see my work you will have to call or text me because I can't get the woman that post my photos to slow down long enough to post my pics here. Text 870 556 0138.
Dub McBride 1996 270

Re: Sound and heat insulation for front end cap

Reply #12 –

I pulled it all out.  Nasty, nasty stuff.  Mine had a layer of poster board that I think a PO put in to hold the foam up.  Here are some pictures.  I am going back with Noico 8 mil butyl automotive sound deadener and then Dynamat 11905 Hoodliner.  I did a test spot or two with the Noico and it held so well after 24 hours that I opted to go over it rather than pull it back off.  And you better get the Dynamat hood liner where you want it before the self-adhesive touches anything...

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Luke & Sandy (still many work years to go...)
1999 U320 36 Build #5387
2013 Jeep Wrangler Unlimited
Previous 1997 Winnebago Vectra Grand Tour 35WQ major interior remodel
Previous several SOB trailers, Class C, fifth wheels.

Re: Sound and heat insulation for front end cap

Reply #13 –
Quote from: George Hatfield –
Here is another product and the Amazon reviews have several from RV owners that have used it with good results with both sound and heat control.

Amazon.com: Dynamat 11905 Hoodliner 32" x 54" x 3/4" Thick Self-Adhesive...

I used that one to replace the insulation on  our generator door.  It's lightweight and easily formed. I think it has a little less noise and heat suppression than the original product.  Much easier to work with though, and lightweight
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Dan - Full timing since 2009
2003 U320 40' Tag 2 slide

Re: Sound and heat insulation for front end cap

Reply #14 –

I used this stuff called FatMat. Interestingly enough, my insulation was in very good shape so I was able to adhere it right to the original insulation. FatMat is used in automotive applications for sound deadening. Probably doesn't do much for heat. Anyhow, it forms well and brightens up that cave. (FatMat)
jor

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93 225
95 300
97 270
99 320
 

Re: Sound and heat insulation for front end cap

Reply #15 –
I had a chance to test the Thermozite on my trip to Florida 3 weeks ago. I noticed improvement in the heat in the bedroom but each night when shutting down after 400 mile days I had to turn back the comforter and cover on the bed to let the mattress cool before going to bed. I still haven't wrapped the turbo but plan to. I was disappointed in the mattress heating up so. May not overcome that without a turbo blanket. I'm not going to remove the product but might would opt for a different product if it were to do over again.I have it in my front cap as well but I have never noticed a heat issue there even before tearing out the old insulation and replacing with Thermozite.
Dub McBride 1996 270