Yes thoroughly sweep and clean the concrete then apply the primer with a roller.
Primer for concrete floor before tiling.
Solid and stable concrete makes an ideal underlayment for porcelain tile.
To prepare your concrete subfloor make sure that it can accept water penetration.
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.
The following steps will allow you to prepare a concrete floor before you lay your tiles.
Acrylic based primers are what i use on a daily for common jobs that are on concrete or fibresheets like hardiebacker.
How to prime bare concrete floor before setting porcelain tile.
This is a basic acrylic based tile primer designed for priming concrete floors and fibresheets before tiling or applying a self leveling underlayment.
Then prime the concrete see photo 2 with the recommended solution consult the membrane manufacturer s literature.
Imagine if the floor was not fully clean and there was still dust covering it the adhesive will sit on top of the dust and not the concrete itself.
Let the primer dry and then apply the membrane photos 3 and 4.
Priming the floor with a concrete primer before installing the tiles ensures that the moisture naturally present in concrete doesn t come through to the surface affecting the adhesive bond and damaging the tiles.
It will seal the concrete to allow a much better bond with the peel and stick tiles.
As with a wooden subfloor a concrete subfloor must be level for successful tile installation.
I found it to be much better than just applying the tiles without the primer as they seem to stick better with less tendency to separate or come up.
It s a great tile adhesive primer and can be applied liberally to substrates.
Use grout to fill in the cracks between the tiles.
Skip this step and we guarantee your new tile will crack right over the cracks in the concrete.
Test by sprinkling water on various areas of the subfloor.
While adhesive manufacturers say you can tile straight onto new concrete or screed we would strongly recommend the use of a primer to ensure there is a good key for the adhesive to take to.
Additionally a steps must be taken to ensure that a concrete floor will create a solid bond.
Cut the membrane so it s 1 1 2 times the width of your tiles.
Apply the grout and wipe off the excess grout with a damp or wet sponge.