Do I need Underlayment if it's for upstairs (plywood) with no Moisture?
1630062
There's always some moisture in wood, upstairs or not. Even if it's completely dry, there's always the chance of water leakage getting under the floor and causing some warping. I'd play it safe and use an underlayment, even if it's only 15-pound asphalt paper, which is inexpensive.
1770585
I put mine on cement board to be safe. Plywood can be used but the floor has to have very little to no flex so the conductors don't break.
833935
Depending upon your application it will work as a moisture barrier you only need to use some type of sealing tape for the seams, duct tape or 3" package sealing tape works fine. If you have known moisture issues, you will need to use the more expensive self-sealing underlayment with built in vapor barrior. Your other option is to use 3ml visqueen between the concrete floor and this poly foam base. I hope this helps
2263953
I'm no expert, but living in Houston, I do have some experience with humidity. My guess is it would not hold up well outdoors, even under cover. It is essentially bent plywood, and I can see that uncurling in a couple years of our 90% plus humidity.
1141515
Most experts I've spoken to, agree on not covering the entire unit. The cover is designed to keep debris from getting inside, it's not about moisture.
876220
Vvapor barrier is for moisture issues so if your laying down on plywood moisture shouldn't be an issue. The product is clearly labeled with a 'this side up'.
2029984
Not a strange question. The manual that came with it said put it on hard floors. I guess it depends on if your floor is cushioned. It needs to be firmly on its 4 legs. It didn't say anything about the possible moisture that I noticed.
11346
I renew it in a room that does not have a moisture problem....... if necessary, I suppose you could do it outside in a sheltered area.
532024
If you mean can you install the plywood outside, the answer is no. However, the plywood will not delaminate if it gets wet for a short period of time. I use this plywood for tops of clocks, and I soak it in warm water for 30 minutes prior to bending. RL
890240
Sorry, I did not notice that your question was about a seal from above the unit. Still - no provision for it. You will have to cover the opening with your own materials - plywood, plank etc.
521628
Hello H.R. I have installed this flooring onto a plywood subfloor, with absolutely NO trouble. The backing is very sticky, I would think as long as there is no dampness, and no debris I think it might work. But, I give no guarantee:-P. Good luck with your project, with whatever you decide.LJ
532025
I had sheets of this plywood get totally soaked by water from a burst water pipe and no joints delaminated after drying out. The boards warped some and were fuzzy but I used them.
1177499
We do not use plywood under our mattress. I think it would cause the mattress to slide, and the platform is designed to use the metal grid to stop sliding.
1185820
I would recomment that you use strictly indoor, unless you paint a clear coat of polymer or something along that line over top to protect.
646162
I just used one layer with my bamboo flooring. This paper is really only for moisture control, not padding, but two layers would certainly do no harm.
118811
We love it and have it under a overhang on our deck. It does have slats on the top and sides that have small openings (1/4"ish) and louvre front so I would imagine if it were set in direct weather things would get wet inside eventually. We plan to put a piece of plastic on the top to help keep things even more dry. Hope that helps!
2120593
No, it would be too high with this underlayment. With hardwood, you only place something like a felt paper, very thin. Homedepot has it.