Hi Roy,

        Do you have a link to the type of product you are describing?  I don’t know what it is.  It sounds like a good option.

I have done the fat mat thing and it helps but now I am lookingfor the next layer for insolation and a bit more sound proofing.

Thanks,

Eric 

85 GL Auto 

On May 15, 2018, at 15:18, Roy Nicholl <RNicholl@NBNET.NB.CA> wrote:

A better solution would be to use a thin layer (1/2” - 1”) of flexible high-density polyurethane insulation or an aerogel matt insulation.  Both are hydrophobic and the aerogels have R-values ranging from R10 - R25 per inch … the only thing better is vacuum panel insulation (~R50/in), but they are too fragile for most retrofit applications.

I plan to use aerogel when I redo both my ’66 Westy and the Hyena.

> On 15-May-2018, at 15:57, Dan N <dn92610@GMAIL.COM> wrote:
> 
> I use Fat Mat insulation and add a thin layer of  fiber glass insulation on
> top of it.
> 
> https://www.amazon.com/FatMat-Self-Adhesive-Sound-Deadener-Install/dp/B003TP4R16