Went out for a weekend ride with the Mrs. this weekend. Even though it was hot as heck, we had the top down, sun block on and the a/c cranked and running fine (thanks to everyone that helped me with that on a prior thread).

Something that we did notice however was the heat radiating up from the floor boards. When I replaced the rugs a few years ago I left the stock jute insulation down there mainly because it was still in great shape. Now I'm starting to think that I should have replaced it. I have been looking around on the web for a better floor insulation, but everything I see is marketed under the term "sound deadener".

Sound is not an issue, heat is. Does this stuff insulate also, and if not, where should I be looking? Thanks in advance for any help.

 

The companies who sell sound deadener (like Dynamat) also sell a separate insulation product.

http://www.dynamat.com/automotive-an...ion/dynaliner/

 

Thanks. I'm at work now, and that site is blocked, but I'll take a look at it when I get back home.

 

I am not a fan of dynamat, the tar based material that you stick to metal. The problem lies when you go to remove it for some reason or another. If you attempt to do this once you'll understand. The Dynaliner seemed to be a good product by itself and easily removed. One word of warning, it will become a hi density sponge if your car leaks any water when it rains or is washed.

 

Also, anything that is tar based tends to smell like cooking asphalt when hot.

 

Looking online and I am seeing dynamat and dynaliner. From what I am reading, it appears that people install the dynamat and then the dynaliner on top of it. Is that what is supposed to be done? Or is that just a recommendation so that they can sell more product?

 

Yes.

 

Well, I guess I know what I need to pick up then. One last question. Is it best to pick up the 1/8, 1/4 or 1/2 inch dynamat?

 

Try a product called Lizard Skin.
http://www.lizardskin.com/
https://www.summitracing.com/parts/l...FdgQgQod-IEFhA

 

When I get closer to completing my project, I'm going to take a closer look at this company's product for Olds.

http://www.parts123.com/parts123/yb.dll?parta~partsort~1~cadefjdx

 

What size (1/8,1/4, or 1/2 in) of dynaliner did you end up using for under the carpet area? And what is your overall opinion on it. I'm interesting in knowing because, from what I've read, thicker material may not be the most practicle to use under the carpet due to spacing issues. I am currently looking at installing it in a '70 442 holiday coupe.

 

I wound up going with the 1/8 inch dynamat and then put dynaliner on top of that. Your best bet is to just buy the sheets and then cut to fit. From everything that I have read, the precut dynamat kits do not cover the whole floor. Installation was very strait forward (time consuming, but relatively easy).

We have not had any hot weather yet, so I can't tell you how well it works, but it has to be an improvement over the old jute insulation.

 

Thanks for the feedback!

 

Was watching Garage Squad and they installed a duct insulating material that sticks to the floor boards and at a much lower cost. You have to cut and fit but other products you have to also.
I am going to look into it an just see. Why wouldn't it work????

 

Depends on what that product is. You definitely don't want to use anything asphalt-based. Also, is the duct product for heat insulation or noise suppression? The requirements are different. Finally, will the product designed for use inside a home stand up to the different environment inside a vehicle?

 

Good points Joe, they did not state any thing "OF COURSE" and this could be another "Get what you pay for" items.