Ceramic and Porcelain Tile Expert Answers installation Installation Guidelines Showers Standards Steam Showers Waterproofing

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…

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Ceramic and Porcelain Tile Efflorescence Staining Expert Answers installation Installation Guidelines Moisture Problems Remodeling Vapor Barrier Waterproofing

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.…

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Ceramic and Porcelain Tile Expert Answers grout installation

Why hasn't my grout harden?

ANSWER - If you are using a cementitious grout it should harden.  If you used too much water in mixing the grout and/or too much water in cleaning the grout during the installation of the…

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Ceramic and Porcelain Tile Expert Answers installation Installation Guidelines stone Waterproofing

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…

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Ceramic and Porcelain Tile cracks Deflection Expert Answers failures grout installation Movement Joints Repairs Sealant Caulk Waterproofing Wet Areas

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…

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Ceramic and Porcelain Tile Expert Answers Exterior Free Tile and Stone Installation Guidelines installation Installation Guidelines Pool and Spa Repairs stone

Can I Install Mosaic Tiles over an Old Eroding Sandstone Flagstone Tile?

ANSWER - I assume this is an exterior application of the sandstone in a flagstone irregular shape.  Sandstone is Quartz stone from a geological point of view, but it is a class 1 that is…

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Brick Ceramic and Porcelain Tile Expert Answers Exterior Free Tile and Stone Installation Guidelines Glass Tile Glazed Tile installation Installation Guidelines Installation Products - Adhesives

Can a Tile Mosaic Mural Be Installed Outdoors with High Temperatures?

ANSWER - You didn't indicate if the mosaics are ceramic mosaics or glass mosaics. Ceramic mosaics are normally produced at over 1200 degrees F.  Normally custom ceramic tiles are dried and then fired in a…

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Ceramic and Porcelain Tile Expert Answers Exterior installation Installation Guidelines Installation Products - Adhesives Standards stone Vapor Barrier Waterproofing

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…

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Ceramic and Porcelain Tile Expert Answers grout installation stone

Why Sanded Grout versus Unsanded Grout?

ANSWER - Unsanded cementitious grout should only be used in grout joint widths of 1/8 inch or smaller.  If you use it in wider grout joints it will tend to crack. Sanded grout should be…

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Expert Answers installation Stains stone

Should Adhesive Spots show through Marble Tiles?

ANSWER -  We have seen where the installer will cover the entire tile with thin-set adhesive (back buttering) and then use globs or spots of the adhesive to attach the tile.  This is not an…

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