Community Forums

bduemig · 03-01-2023, 08:54 PM

I have been searching for a few weeks now about thermal and sound barriers for wheel wells and doghouse. It is hard to realize which sites are advertising their own product or truly evaluating and ranking the products objectively.

So here is the question. Has anyone insulation and sound barriers on their wheel wells and doghouse on a class a? Any recommendations?

Btw. I have a 2019 Forest River Georgetown XL 378TS.

Rob_M · 03-01-2023, 09:10 PM

Dynamat is an often used, quality line of products snd often copied by cheaper manufacturers.

eddndee · 03-01-2023, 09:44 PM

The PO of my GS, I discovered, had sprayed the wheel wells, under carriage sheetmetal and firewall/dog house with some sort of insulating spray. I assume it is heat resistant/fire retarding. I know I keep cleaning off areas I am trying to access.

bduemig · 03-01-2023, 10:22 PM

Quote:

Originally Posted by eddndee

The PO of my GS, I discovered, had sprayed the wheel wells, under carriage sheetmetal and firewall/dog house with some sort of insulating spray. I assume it is heat resistant/fire retarding. I know I keep cleaning off areas I am trying to access.

Do you have any idea if it has quieted engine noise and heat?

Carnac · 03-01-2023, 11:38 PM

We had a Thor Class A with Ford F51 chassis (V10 and doghouse).

To help with noise and heat, I took the doghouse off, cleaned the underside, removed the aluminum strips that were there, and added Thermo-tec heat and sound suppressor. It is quite sticky - used a metal roller to get good adhesion. Also used some DynaMat seam tape. Finally, I screwed the aluminum strips back on.

It turned out really nice - and I did notice a good bit of noise reduction and less heat. I was very pleased for under $100 and only a couple of hours work.

I also made sure the doghouse was clamping tight back in place. I did take some time to make sure there was good insulation around the underside of the doghouse flange (the part that is on the MH chassis).

Jim