Do I Need Underlayment For Vinyl Plank. Vinyl floors that are glue down or loose lay will not need a vinyl underlayment as these floors will be installed directly over the subfloor. However underlayment can still prove resourceful when used for sound reduction and cushioning.
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Since vinyl planks are generally thinner than a. If your subfloor is very even and smooth you do not need an underlayment under your vinyl plank on hardwood. Go for underlayments with a higher rating of sound transmission class STC and impact isolation class IIC.
Glue Down Vinyl Plank Flooring Glue down vinyl plank flooring will not need an underlayment.
Also if the flooring comes with a built-in underlayment its better to avoid another underlay installation. However underlayment can still prove resourceful when used for sound reduction and cushioning. All you need to do is join the underlayment together and use the overlap system and the PeelStick tape. The only time a vinyl floor may need underlay is when the surface beneath is uneven or has issues with damp.