If I wanted to carpet my basement floor without a plywood subfloor, should I lay down plastic before I put down the underpad?
Personally I would not put down a plastic vapour barrier. All the moisture is going to get trapped under it and then mold and the smell and then you will need to rip it all out and start over again. At least with no plastic vapour barrier the moisture can wick up into your carpet and then dry out (might need a dehidifier).
Now, if you lay down some Drycore or better yet some Delta flooring there will be no moisture build up. You will have air circulation under the sub floor (build it that way) warmer feet and you will be protecting the carpet and your investment. It is a no-brainier.
Feel free to reach out for more help.
Hi, Stewart here of Sct Floorcoverings.
No you do not need to lay down a plastic sheet if you are installing carpet on a Basement floor. I would suggest a good Rubber type Carpet underlay. For the Maximum comfort level i would suggest 5/8ths Plywood over a Platon floor (Plastic Raised Bubble floor) and even more comfort install heat pads under the carpet.
Stewart, Sct Floorcoverings.
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