Do You Need To Seal Concrete Floor Before Tiling
Sealer needs to be applied in dry conditions because it won t adhere to damp concrete.
Do you need to seal concrete floor before tiling. After laying all the tile over the surface of the concrete slab allow the tile to rest for 24 hours before finishing the tile. It will also provide a stronger adhesion between mortar and concrete. How to seal a concrete floor for tiling. Step 2 seal the concrete.
The thinset that was applied to glue down the tiles has been applied over a dirty surface and instead of adhering to the substrate it adhered to the dust and oils sitting on top of it. Dont forget to seal the floor with pva before applying any tile adhesive and use a good quality adhesive for your. If you want to seal over concrete floors that already have a seal try a polyurethane sealer. Use grout to fill in the cracks between the tiles.
Typically you wouldn t seal a slab prior to tiling but in this case and using this product it would be recommended. Before applying check the weather. A concrete sealer prevents moisture from staying underneath the ceramic tiles. For indoor concrete floors that won t be exposed to oil or grease use an acrylic sealer which is easy to apply.
Thanks for the reply i saw that later in the thread you recommended to another guy that sealing in moisture wasn t a good idea which is what i also thought. This is an optional step but can really benefit your tile installation in the long run. Apply the grout and wipe off the excess grout with a damp or wet sponge. The temperature also needs to stay above 50 f during application and drying time up to three days.
If your concrete is new you ll need to let it cure wait at least one month before applying sealer. A concrete floor should be sealed to protect against moisture but the sealer can interfere with the tile adhering to the floor. With just a little extra work you can seal your concrete floor and. For that reason it is best to use an elastomeric crack.
To seal concrete floors use an epoxy sealer if you want something durable that comes in a variety of colors. Once traffic starts walking over it those stresses start moving the tiles and eventually they pop off the floor and get loose. The next step is to apply a concrete sealer on the floor surface.