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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Ceramic and Porcelain Tile Expert Answers grout Standards stone

What are the standards for grout joint widths and properly filling with grout?

ANSWER - The Natural Stone Institute (previously the Marble Institute of America) Dimensional Design manual state that the grout joint on a stone should never be less than 1/16"  wide and preferably 1/8" wide.  To…

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Ceramic and Porcelain Tile Deflection Expert Answers failures grout

How do you repair grout that comes loose so it doesn't continue to happen?

ANSWER - Grout joints in a 12x24 inch tile should be at least 1/8" wide otherwise the grout can't fill the joint as it should.  If the grout joint is 1/16" or less then chances…

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Backer Board Ceramic and Porcelain Tile Expert Answers grout installation Moisture Problems Mold sealers Showers Wet Areas

Can I install Onyx mosaics in my Shower that don't have grout joints?

ANSWER - First of all what happen to the the 3rd wall in the shower?  I will assume it has a different substrate or you aren't tiling it. Not sure why you are using Schluter…

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Ceramic and Porcelain Tile Expert Answers failures grout Leak Movement Joints Repairs Sealant Caulk Showers Waterproofing Wet Areas

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…

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Ceramic and Porcelain Tile Debonding Tile Expert Answers failures grout installation Movement Joints Tenting

What can I do about my 2 year old tile installation that is coming loose?

ANSWER - It sounds as though your tile installation has failed and is debonding.  It is likely due to compounding deficiencies in how it was installed.  The substrate may have not been properly prepared.  The…

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Ceramic and Porcelain Tile Expert Answers grout Leak

What is causing water to flow out of our Grout Joints and what can we do about it?

ANSWER -  If water squirts out of the removed grout joint 2 feet in the air, then that is an indication that the water is under pressure.  I assume that the water squirting in the…

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Ceramic and Porcelain Tile cracks Debonding Tile Expert Answers failures grout Hollow Sounding Tiles

What has caused some tiles in my Ceramic Tile Floor to become Hollow Sounding and the Grout To Crack?

ANSWER -  Hollow sounds  on a ceramic tile isn't a defect in itself, but it can be a symptom of a defect depending on the circumstances.   If portions of a tile is hollow sounding or…

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Ceramic and Porcelain Tile cleaning Expert Answers grout Maintenance Stains stone

What is the cause of my grout staining, and how can I remove the stain?

ANSWER - You didn't mention what kind of tile you had.  Natural stone of various types are known to contain ferrous oxide that can lead to staining in the tile or the adjacent grout. Since…

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cleaning Expert Answers grout Stains stone

How can I clean the Grey Limestone Pebbles to remove the Brown Stain from Grouting?

ANSWER - There are different types of limestone.  The low density limestones are porous and more susceptible to staining.  Medium density limestones are less porous, and high density limestones are even less porous.   All of…

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