Expert Answers in Waterproofing

ANSWER - It is possible to install tile over tile if the existing tile is in good condition.  If the existing tile is cracked then the new tile installed over it will crack.   In order…

ANSWER - Squeaky tile floors normally mean that either the wood sub-floor under the tiles is not stable in those spots or wasn't fastened down properly. When you install tile over tile the new tile…

ANSWER - Your engineer was basically saying that you have a high water table, meaning that the underground water is very close to the surface of the ground. The french drains only work if the…

ANSWER - First of all if it was installed correctly you wouldn’t have a problem.  To fully figure it out I would have to perform a forensic intrusive inspection, which probably isn’t practical for a…

ANSWER - For an ADA shower you can’t have a curb/dam.   You need a minimum slope to drain of ¼” per foot and no more than ½” per foot.   You need a two part drain…

Xypex is suppose to waterproof the concrete.  So in theory it should prevent moisture migration in the concrete wall to help reduce the possibility of efflorescence.  You can still get efflorescence from the mortar or…

ANSWER - When there are tile failures generally it is never due to one deficiency, but rather due to multiple compounding deficiencies. First of all your grout should not crack.  If water that goes into…

ANSWER - Exterior decks are one of the most common failures in building construction because they are normally constructed incorrectly. When there is a failure it is normally due to compounding deficiencies rather than only one…

ANSWER - I'm guessing that the terrazzo floor is the cementitious type and not the epoxy type, but either way, if the terrazzo floor was originally installed correctly, it should not have been harmed by…

ANSWER - There are a number of shower configurations that are considered acceptable shower assemblies depending on the substrate conditions you have and the materials that were selected for the substrates and other components of the…