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…

Read More
Ceramic and Porcelain Tile installation Lippage Standards

What is allowable lippage between a 13x13 inch tile and mosaic

ANSWER - There isn't a clear standard for what is allowable maximum lippage between a 13 x13 inch tile and mosaics, but I would expect it to be 1/16". For 1x1 inch tiles it is…

Read More
installation Standards stone

Can Honed and Filled Travertine be used in Commercial Applications?

ANSWER - The Marble Institute of America Dimension Stone Manual says Travertine stone should have a minimum abrasive hardness of 12 for commercial floors subject to heavy foot traffic. It must also meet the ASTM…

Read More
Ceramic and Porcelain Tile failures Standards

Why is my Ceramic Tile Chipping?

ANSWER - Chipping of ceramic tile can be caused by various conditions and for compounding reasons. Maybe the ceramic tile isn't very chip resistant. Although there is not a specific standard test for chip resistance…

Read More
Ceramic and Porcelain Tile Grout installation Standards Waterproofing

What is the Max Acceptable Vapor Transmission for Porcelain Tile w/ Epoxy Grout?

ANSWER - The allowable vapor emission rate depends on what installation and tile products you are using. Generally speaking the standard for the floor covering industry and what most installation product manufacturers publish is 3…

Read More
Ceramic and Porcelain Tile cracks Debonding Tile failures Grout Hollow Sounding Tiles Movement Joints Standards

Why is Ceramic Tile Hollow and Grout Cracking on New Floor?

ANSWER - When there is ceramic tile or stone failures it is normally due to compounding issues. There could be excessive movement beyond the industry limit of L/360 deflection, but your subfloor description sounds substantial.…

Read More
Concrete Substrate Slab installation Standards Waterproofing

Vapor Barrier needed under Concrete Slab?

ANSWER - Yes, you always need a vapor retarder (barrier) per ASTM E1643.  The vapor retarder should continue up the sides of the foundation to prevent lateral migration of moisture.  Sometimes a sand bed can be…

Read More
Debonding Tile failures Hollow Sounding Tiles installation Moisture Problems Standards

How are voids beneath tiles harmful?

ANSWER - If you tap on a ceramic or stone tile with a hard dense material, like a steel ball, where the tile is not bonded it will sound hollow (lower pitch sound) than areas…

Read More
Ceramic and Porcelain Tile failures Lippage Standards

Any Lippage Standard on Ceramic Tile Floor in California?

ANSWER - There are industry standards (ANSI A108.02-4.3.7-2005) that state that for tiles that are consistently sized the grout joints ¼” wide or more can not have any lippage greater than 1/16 inch.  If the…

Read More
failures Moisture Problems Standards

Tile is coming up because of moisture problem

ANSWER - There is no simple answer to your question without thoroughly investigating your situation, but I will make some general comments to help you to decide how to proceed. There is an ASTM F-1869…

Read More