Expert Answers Grout Lippage Marble Standards stone

What is the Stone Industry Standard for the Allowable amount of Marble Tile Lippage?

ANSWER - Per the Natural Stone Institute Dimension Stone Design Manual the tolerance for the allowable lippage for a for a calibrated marble or any calibrated natural stone floor tile is 1/32".  This is based…

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Ceramic and Porcelain Tile cracks Expert Answers Grout Repairs

Why is my Unsanded Grout Cracking and how do I fix it?

ANSWER - There are many reasons why a grout will crack and come loose.  Unsanded grout is recommended for grout joints 1/8" wide down to 1/16" wide.  Sanded grout is recommended for grout joints that…

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Ceramic and Porcelain Tile Debonding Tile Expert Answers failures Grout Installation Guidelines Showers Standards Waterproofing Workmanship

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…

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Ceramic and Porcelain Tile cleaning Expert Answers Grout Haze Ink Jet Glazed Tile Maintenance Repairs

Why do my Plank Floor Tiles have a Haze or have Lost its Color?

ANSWER - Tiles should lose their color from cleaning.  There are a lot of variables to consider.  First what kind of tile is it and how was it manufactured.  I will assume it is a…

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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 cleaning Expert Answers Grout Maintenance Stains

How do we remove a Urethane Grout Haze from a Tile?

ANSWER - If you rub too hard you might damage the tile. The best approach is to contact the manufacturer of the urethane grout and ask them how best to remove the urethane grout haze. …

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Ceramic and Porcelain Tile cleaning Expert Answers Grout sealers Stains

How Can I Remove Contrasting Grout Staining in a Black Tile?

ANSWER - The grout that you used may be a polymer modified grout similar to a grout with a latex additive.   Acids won't attack the polymer, but there are products for removing latex haze.  Try…

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Ceramic and Porcelain Tile Expert Answers Grout Maintenance sealers

Do I have to reseal my tile and grout?

ANSWER - The unglazed porcelain tile should technically be impervious with an absorption of 0.5% or less.  That doesn't mean it can't stain, when it can if something is left on it long enough and…

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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 cracks Efflorescence Staining Expert Answers Grout Leak Maintenance Showers Stains

Why is water coming out of the grout on the side of our Shower?

ANSWER - From your photo the bottom edge of the wall tile where it is adjacent to the transition joint from the wall to the floor has efflorescence staining.  That suggests water is traveling from…

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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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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 Moisture Problems

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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