Stick down sound proofing ,Insulation?

All the peel n stick stuff is pretty heavy.

If you want something lightweight and is a proven thermal and acoustic insulator? Look into 3M Thinsulate.
I've used it in several commercial and retail products for both thermal and noise insulator and it works great.
So when looking for a lightweight alternative, it was the natural choice.

I got 4 yards of 60" 3M® Thinsulate UDS Insulation @ $9/ linear yard.
There's many different varieties of Thinsulate but I think the UDS 157 gram offered the best R-value/mass/thickness

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