Whenever you want to install tiles on a concrete floor -especially in the basement-, you have to scratch the surface with a grinder as the picture bellow:
What it does is giving you a great bonding between the tiles and floor. Do not install tile on a painted smooth concrete floor.
You don't often hear about concrete renovation. This is a great tip to do though if you are planning to remodel your basement or garage. It might also work for a warehouse or business garage. http://wdigroup.ca/construction-and-project-management/
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