Using Cement Boards Over Concrete Slab Construction
It seems that ceramic tile installation has an abundance of myths that pop up all too frequently regarding Do-It-Yourselfers on “help forums” and DIY websites. So-called tile experts offer advice and opinions based on, well… I’m not sure what some of the comments are based on or where some people get their (mis)information to tell you the truth. I want to address the subject of installing cement board products over a concrete substrate.
It is imagined by some that products like Durock, Hardibacker and others can be used to fix imperfections in the surface of concrete or to override a previously painted or sealed concrete surface. Installing tile over painted or sealed surfaces is usually not good practice. (more…)