1971 Mark III Sound Insulation

[stovebolt1]

Howdy;
Anyone have a good source or recommendation for sound deadening material? I'm pulling the rear seats out of my 71 to fix the quarter windows and the insulation behind/under them is cracked and worn. Figure I may as well replace it while I'm back there. Recommendations? Have you had good luck with any particular source or product?

Thanks

 

[11MarkX]

I like DynaMat. Its very sticky, easy to use and doesn't weigh too much. Many professional restore shops use it. There are cheaper alternatives which you'll probably be happy with. I don't think there's a big difference in sound. I think the biggest difference is ease of installation and if it will stay put on doors, humps etc.

 

[stovebolt1]

Thanks MarkX. I've used Dynamat before, and some of the off brands and there isn't much difference. In addition to that I was thinking along the lines of Jute Pad or that stuff that looks kind of like soft buffalo board (like the stuff they originally used in the 70s). I suspect that something like Jute would have more temperature insulating properties when paired with a Dynamat-like product. Thoughts?

 

[11MarkX]

Yes, you're correct. If you want temperature barrier too, then dynamat isn't too good. You might want to use it with Havelok Wool, 100% wool and maybe closed cell. They have the best evaporation qualities. Nothing worse than rotting out steel because water vapor can't get out.

I think the van lifers have insulation down to a science. Many of them deal with heat, but some also deal with sound too. They know more than I do. Many videos online. Here's one.