Expert Answers in Waterproofing
Is it required to have a Waterproof Membrane under a Floor Tile Installation in a Mud Room, Laudry Room or in a Bathroom floor
ANSWER - It depends on what type of mat was used over the plywood on whether it is an acceptable installation method. Although it would be ideal to install a waterproof membrane in areas that…Read More
How do we determine what caused our Tile Shower to Fail?
ANSWER - You are asking a lot that can't be answered without performing a forensic inspection to determine what is causing the failures. I can make some general statements that may or may not apply…Read More
Is it a problem if Schluter Ditra is installed on the walls of a Steam Shower?
ANSWER - Based on the Schluter literature, although they only show floor applications, they don't say it is only for floors. The Ditra is waterproof if installed correctly for waterproofing. It does have a key…Read More
What should we do if there is evidence that there is high Moisture coming up our Concrete Slabs?
ANSWER - Carpet might be allowing the moisture to evaporate through it, but as dirty as carpets get you could develop some microbial growth in the carpet. Adding more carpet doesn't solve or prevent problems.…Read More
Is it necessary to waterproof under tile installations?
ANSWER - It depends on the application on whether waterproofing under a tile installation is necessary. If it is in a wet application and in some exterior applications, then it is necessary to waterproof the…Read More
How do I repair the Horizontal Grout Joint between the Bathtub and the Tile wall?
ANSWER - The transition joint between the top of the bathtub flange and the wall tile is not supposed to be filled with a cementitious grout. It should be filled with a resilient ASTM C920…Read More
What kind of Water Resistant Barrier or Vapor Barrier should be used For Exterior Tile Veneer Installations?
ANSWER - W244E can be a ceramic or glass tile or a stone application for an exterior framed wall with cement backer board over it. If it is a cementitious backer board then they would put…Read More
Is it alright to use Silicone Sealant to fix a Shower Leak?
Answer: First of all, all of the transition joints in the shower both horizontal and vertical should not have been grouted with a cementitious grout. They should have been filled with an ASTM C920 resilient sealant…Read More
How do I make Repairs on Schulter Ditra Mat?
ANSWER - First of all having tiles that sound hollow is not a defect in itself. Normally when tiles are installed over a membrane of some sort; like Ditra it will cause hollow sounds because…Read More
Why is my Tiled Balcony Leaking and How Can I fix it?
ANSWER - When there is a problem it normally is not due to one deficiency, but due to multiple compounding deficiencies. You state that the peel and stick moisture barrier was properly installed. If if…Read More