The bottoms of my kitchen sink cabinet and those of two bathroom vanities are made or 3/4" particle board. They're relatively new and solid enough, but subject to staining and possible water damage.
For ease of installation, I plan to use vinyl tile to cover the particle board, but realize that it should be sealed before setting the tile.
What would be the best choice(s) for sealing the particle board? I do not want to have to install an underlayment.
TIA