Floating vinyl planks moisture barrier and/or underlayment?

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Old 03-12-17, 11:11 PM
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Floating vinyl planks moisture barrier and/or underlayment?

hi there,

been goggling the subject for a couple of hours now and getting a little confused. i have 3 projects that i need done. 2 are floating vinyl planks and 1 is floating laminate plank (i'll ask in the other forum).

1st project:
i want to install luxury vinyl plank flooring, floating, in the 2nd floor bathroom. the subfloor is 3/4 inch plywood over joists. there will be 1/4 inch plywood attached to the original 3/4" plywood.

do i need a moisture barrier? do i need an underlayment?

2nd project:
i want to install luxury vinyl plank flooring, floating, for the kitchen floor, similar situation to the bathroom. 3/4 inch plywood over joists. 1/2 inch plywood over the 3/4 inch plywood (previous owner had vinyl sheets glued down).

do i need a moisture barrier? do i need an underlayment?

3rd project: i'll post in the other forum as well.
i want to install, laminate plank flooring in the living room, floating, thin pad already attached. over 3/4 inch plywood subfloor over joists.

do i need a moisture barrier? from what i've read, i should NOT use a moisture barrier as it may lock in moisture in the plywood subfloor.

thanks in advance!
dennis
 
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Old 03-13-17, 03:20 AM
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No on all three counts. This is a duplicate of http://www.doityourself.com/forum/so...er-needed.html

We try to keep all the threads of one subject together, so one may be deleted or merged.
 
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Old 03-13-17, 08:22 AM
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I deleted the other thread since all of the questions were answered here.
 
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Old 03-13-17, 08:24 AM
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Not sure why your doing all that searching, just read the install directions right on the box or on the manufactures website.
Follow to a tee or there's no warranty.
 
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Old 03-13-17, 10:48 AM
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thanks for the responses. and thanks for merging my thread into one.

one more question: for the kitchen and bathroom with floating vinyl planks, will i be doing any harm if i added an underlayment for sound and warmth?

thanks again!
 
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Old 03-13-17, 11:05 AM
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Vinyl generally gets installed on 1/4" plywood underlayment. Again, please read and follow the actual directions from the manufacturer.
 
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Old 03-13-17, 11:25 AM
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thanks for the reply. thanks!
 
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