In our class there is always one statement that will answer any

drying question:

"Wet Always Goes To Dry... If It Can."

There are many subsequent formalities that usually follow this

line of reasoning, but the bottom line is that moisture always

wants to move from high pressure to low pressure.

If it isn't, then there is something that is keeping that from

happening, or you have yet to make it happen.

There is no more glaring example of this than is represented by

the scenario in this question.

No matter how many fans, or how much dehumidification you

place in an area with moisture under vinyl, or how perfect the

drying conditions are in the environment, IT WILL NOT DRY.

Remember, Wet Always Goes To Dry... If It Can.

In this scenario it can't. The vinyl is a vapor barrier, and will not

allow the moisture to come through it.

The only option you have is to expose the sub-flooring so you

can get to the moisture and dry it.

Contractors who have moisture under vinyl, and don't pull it, are