Expert Answers Moisture Problems Pool and Spa Repairs Roof Tiles sealers Spalling stone Waterproofing Wet Areas

How do you waterproof a tile floor that is already installed?

ANSWER - If the ceramic tile is already installed there is no way to fully waterproof the floor after the fact, unless you replace the tile and install a legitimate waterproof membrane during the replacement…

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installation selection Wet Areas

Can I use 18x18 tiles on bathroom wall

ANSWER - Yes you can install 18 x 18 inch ceramic tiles or stone tiles over a backer board in the shower and over drywall in the adjacent bathroom wall area if done correctly.  Most…

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Grout installation Wet Areas

Grouting Shower Walls - do I need to grout the wall tiles in my bathroom shower?

ANSWER - Yes you should definitely grout the wall tile in your shower. In theory it shouldn't matter if you grout or not (if you like that look), but from experience we have found that…

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cleaning failures Stains Wet Areas

What is causing my Tile to Discolor in our Shower?

ANSWER - There are a number of variables involved in determining what is causing the discolored tiles, and it will likely require some intrusive inspections to verify the cause and to determine how to remediate…

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cleaning failures Grout Moisture Problems Stains stone Wet Areas

How to Clean Limestone and Grout in Shower?

ANSWER - First of all, if your grout joints have turned moldy and the limestone is turning a rusty color then those are symptoms that the shower floor was not installed correctly.  Water is probably being…

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cleaning sealers Stains stone Wet Areas

Remove Soap Scum, Mildew from Marble Shower without Damaging the Marble?

ANSWER - The best way to clean soap scum and mildew from marble shower walls and floors is to use a cleaner designed for stone. Go to our website at to Expert Answers…

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selection Standards stone Wet Areas

Are Onyx slabs suitable for shower wall applications?

ANSWER - Yes there are standards for the installation of onyx slabs, which are the same as the standards for marble. All geological classifications of stone have minimum/maximum values for their physical properties, and onyx…

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installation Waterproofing Wet Areas

How to Construct a Shower over a CMU substrate?

ANSWER - Definitely do not install green board in a shower or wet area. Although it is technically moisture resistant, it is not recommended for showers per the building code and industry standards, because when…

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Ceramic and Porcelain Tile Exterior installation Waterproofing Wet Areas

How do I install Mosaic Tiles to be Freeze Thaw Proof?

ANSWER - First you need to verify that your mosaic is frost proof/freeze thaw stable.  If it is porcelain or vitreous clay tile it is possibly frost proof.  If it is a stone mosaic then it…

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Exterior installation Wet Areas

How do I install Tile on upper Exterior Patio Deck over a room?

ANSWER - Exterior decks are very problematic if they are not installed correctly, particularly if there is occupied space underneath it. There are several steps necessary to make sure your tile deck will perform as intended. …

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