Can You Lay Porcelain Tile Over Concrete. You can also apply a waterproof membrane over the slab to keep moisture from migrate. If you have 80% or less rh then you should be able to adhere to the slab. The slap has various areas of high moisture from, i assume water under the slab.
2 days latter i was going to grout the tile and. If used indoors, your porcelain tiles should be mopped over on a weekly basis to keep them pristine. › how to lay tile on concrete floor.
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Can you lay concrete tile on dirt without a base? Afterward, dampen a cloth and use it to wipe away any excess grout. That means that if you submerge them in water long enough, then they will eventually allow that water to seep through. I installed 12×12 tile over good dry old concrete slab.