I have thought and thought about this and have come to the conclusion that a high-end vinyl is going to be the best flooring for my sunroom. It may be exposed to occasional spills because it's where the grandkids will hang out and do their crafts and other activities and also because we will open the windows often, there is always a chance of rain blowing in. So water resistance is a must. Anyway, we have been working on this build for a long time (it's a DIY house) and the 3/4" T&G OSB that is out there is not pretty. It's not swelled up or flaking, but there are small gaps in the joints and other imperfections. I know vinyl used to be very sensitive to the subfloor, allowing all imperfections n the subfloor to show through on the vinyl. I don't know if this is still the case or not. What must I do to prepare this floor for vinyl? The room is 14' x 47'. Thanks....

Cindy