Is SoundStep LV waterproof? I am looking for something thin and easy to put over plywood. Table of Contents Join Our Newsletter You are about to install your new flooring. As you lay the first plank you realize that Name(Required) First Email(Required) HiddenHubspot Form Source CAPTCHA Share Categories Carpet Pad Floor Underlayment Radiant Floor Heating Surface Protection Uncategorized Under Deck Ceiling Post navigation Previous: Can I put SoundStep LV down over an existing old vinyl floor? And then can peel and stick tiles, square or plank, be applied over it?Next: If SoundStep LV has a moisture barrier, what is the perm rating?