Backer Board Ceramic and Porcelain Tile Expert Answers installation Wet Areas

Is there supposed to be a backer board gap above a bathtub flange?

ANSWER – No there should not be a gap between the top of the bathtub flange and the backer board on the wall.

There should be a moisture barrier behind the backer board that is…

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Ceramic and Porcelain Tile Expert Answers Inspections installation Standards

Are there standards for how ceramic tile installations can be inspected?

ANSWER – There is no standard for how to inspect a tile installation after it is installed.   There are ceramic tile standards in ANSI-A137.1 that give instructions on how to inspect tiles, which have not…

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Backer Board Expert Answers installation Installation Guidelines Slab stone

Should I use mechanical anchors to install my 2cm thick granite stone?

ANSWER – Mechanical anchoring of the stone is always considered the safest method of installation.   If you do use mechanical anchors you need to be aware of the capacity of the particular stone you…

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Ceramic and Porcelain Tile Expert Answers installation Installation Guidelines stone

What do I use to adhere porcelain tile to a marble floor?

ANSWER – As long as the existing marble floor is structurally sound and well bonded to its substrate without excessive deflection, you can bond over the marble.

The marble surface is likely polished or honed…

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Ceramic and Porcelain Tile Expert Answers installation Repairs

Why is the floor tile replacement floor so much higher than the adjacent floors?

ANSWER – If the subfloor and tile was replaced as specified, then the new tile floor should not have been any higher.   The tile installer should have known that the floor would be higher…

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Expert Answers Grout installation Lippage Standards stone

What is the tolerance for tile grout joints that are butted together?

ANSWER – The joint between two adjacent tiles is referred to as the grout joint, which is what I think you are referring to.  I am also assuming that when you say zero joint you…

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Expert Answers Glass Tile installation Standards

Does the installation of Glass Tile require a Crack Isolation membrane?

ANSWER – There are no mandatory requirements to install glass tile over an ANSI A118.12 crack isolation membrane, unless the substrate to which the tile will be adhered to has non-structural cracks.  Tile cannot be…

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Expert Answers Grout installation Interior Lippage stone

What is the allowable Lippage for Stone Tiles?

ANSWER – According to the Marble Institute of America (MIA), on smooth surface stones, lippage should be limited to +/- 1/32″.   Further more they state that allowable lippage is an installation tolerance, and is…

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Ceramic and Porcelain Tile Expert Answers Exterior installation Moisture Problems sealers stone Wet Areas

What is Efflorescence and How to Avoid it?

ANSWER – Excessive efflorescence staining (generally a whitish substance) on stone, tiles,  grout, or adjacent surfaces is a generally a symptom of an excessive moisture problem. Read More

Ceramic and Porcelain Tile cracks Expert Answers failures installation Wet Areas

Why did the shower walls bow and crack?

ANSWER –  First of all, tile applications installed on shower walls should not bow or crack.   What you describe sounds like it is a shrinkage problem in the floated wall mortar bed.  You didn’t…

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