Do You Have To Seal A Concrete Floor Before Tiling

Jul 5 2010 1.

Do you have to seal a concrete floor before tiling.

Step 3 mix. The following steps will allow you to prepare a concrete floor before you lay your tiles. Also ensure that the concrete is level. This is why it is better to prime it than not to.

Roughening the surface is needed for the sealer to stick properly to the concrete. Seal off the area with poly sheeting. For that reason it is best to use an elastomeric crack prevention membrane to both seal the floor and protect your tile installation from failure. New concrete floors or screeded floors are a different matter.

This is particularly imported when laying tile as the floor needs to be as level as possible. You will have to clean and prepare the concrete surface before installing any tile. You can either roll on a liquid latex membrane or use a peel and stick crack prevention mat over the entire concrete subfloor. To prevent that movement from creating cracks in your grout and tile install a crack prevention membrane after the concrete subfloor is clean flat and free of cracks larger than 1 8 inch.

Choosing to lay tile on a concrete slab is a good idea. If you re unsure about yours remove a tile and send it to a local asbestos abatement firm for testing. The concrete makes a firm surface that the tile requires. Priming new concrete floors.

Most floor tiles made from the 1920s to the 1960s contain asbestos and require special procedures for removal. Dont forget to seal the floor with pva before applying any tile adhesive and use a good quality adhesive for your. A concrete slab makes a good surface on which to lay tile. Lay down a sheet of crack isolation membrane before tiling if your concrete floor is severely damaged or aged.

Cleaning and filling any cracks in the floor takes a little time and the only precautions to take prior to tiling are to make sure that the floor is completely dry as the thinset used for tile needs a moisture free environment. Use filler to fill in any dips and apply a floor leveler for any humps in the floor. Warning never lay tile over a damaged concrete floor without repairing it or your. If it tests positive follow these asbestos abatement procedures.

So your nice new clean ply floor isn t so clean anymore and if it s not prepared properly prior to tiling the adhesive will just go onto the dirt on the floor and might not stick. These membranes prevent water from seeping up. Cement on top of slab is solid and not flaky i dont worry about it i like the glue to be absorb into the slab but if u seal could not absorb u dammed if u dont and dammed if u do been tiling 29 years.