How can I seal peel-and-stick vinyl tile?

Can you use a waterproof caulk to use at the seams? Also, you could buy some sanded grout and grout the whole bathroom at the seams so it will be the same color. That is what seals the tile in place. Just mix it with a little water and make it pancake mix consistency and take your gloved finger and go around the seams between tiles. Wipe off excess with damp cloth or paper towel. Don't wait more than 30 min to do that or it will harden and make a problem removing. Polish with soft cloth.

Some vinyl peel and stick tiles are made to be grouted and others are not--they just butt up to each other. It would be a waste of time to use grout on those tiles. You can buy clear vinyl floor sealer and apply it to your peel and stick tiles. It comes in different finishes and you should be able to find a low gloss finish. From what I read, you have to apply the sealer and once it dries you use a floor wax over it. Seems that it might need to be reapplied after a period of time because cleaning the floor will remove it.

https://homeguides.sfgate.com/seal-selfstick-vinyl-tiles-38445.html

https://www.hunker.com/13416260/how-to-seal-a-vinyl-tile-floor

Here's on example of a vinyl floor sealer. You may want to check at a local home improvement store like Menards, Lowes, Home Depot, etc.

https://www.lowes.com/pd/Zep-Stain-Resistant-Floor-Sealer-128-Fluid-Ounce-S-Floor-Polish/3621292

Hi, Allison!

I've had peel and stick vinyl installed in a bathroom for nearly 10 years with no issues (I didn't seal the seams at all). As long as there isn't a huge gap between the tiles, it shouldn't be a problem though I completely understand the worry! As a side note, if any tiles do lift, they can be secured using contact cement. I hope this helps!

i would seal them. I just applied these tiles myself very tightly up against each other in my bathroom. I took a shower last night and drip in flooring which is completely installed except for trim. I Pulled up some tiles today to swap out for longer ones as trim didn’t hide gap f and there was moisture beneath those and others tgat I pulled up to check if wet. I’m going to add sealer to mine, and would recommend you do as well.

They are waterproof in that you can get the top as wet as you want. They are not waterproof in that they will keep water off your floor, nor will said water not affect the bond to the floor. These tiles may be able to last sitting in water but they will not keep water from getting underneath. Your only options are really one sheet of vinyl or tile (could I guess use a membrane).

If you install these right though I would bet that 99% of the water (given you don't just let an inch of standing water sit) will never meet your subfloor. No caulk is needed, just make sure that all of the edges are tight and clicked into place. To keep your bathroom better suited for a kid you may want to make sure baseboard are sitting right on these and caulk between baseboard and tile.

You can seal peel-and-stick tiles by using a vinyl seam sealer kit. You can seal peel-and-stick vinyl tile flooring by using a seam sealer kit. After installing the vinyl tiles, roll the floor with a tile roller to ensure good contact before sealing. To finish the edges of a peel and stick backsplash, apply the caulk. Caulk can be used at the bottom edge, and on any side edges where it meets the wall. This helps to make it look more like real ceramic tile.