Re: Installing Cork Flooring
Yes, you can lay right over the vinyl already on the floor. Keep in mind that if you've got transitions from where there is vinyl to where there is not, you're going to have to float this area with leveling compound to feather the two heights together. You'll also likely see and feel this transition point once the floor is down. If you'll have transitions such as this, I would recommend pulling the vinyl. You can rent a machine or do it by hand with a floor sc****r.
Can't answer the second question, I am unfamiliar with cork flooring. If there is a concern about moisture in the seams, then it's probably cork over a substrate, and it is the substrate that cannot handle the moisture. Again, I'm not familiar with the product, so I can't offer much about it.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!