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Expert Answers in Standards
Are there tolerances for natural stone edge profiles to be consistent looking?
ANSWER - The Marble Institute of America (MIA) Dimension Design Stone Manuel Version 8 says for bullnose or other rounded shaped profile edges that the allowable tolerance is no more variation than +/- 1/32 (+/-…
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Ceramic and Porcelain Tile
Expert Answers
Grout
Installation Guidelines
Movement Joints
Standards
Workmanship
Are there Tolerance Standards for Grout or Caulking Joint Width Variation?
ANSWER - You are correct to install caulked movement joints at the perimeters and inside vertical corners of the tile installation. Caulk should be an ASTM C920 silicone sealant per TCNA EJ171 standards.
The ceramic…
Read MoreIs it possible that my Porcelain Tile Warped From being cut on a Water Jet Machine?
ANSWER - I have heard others say that they think their porcelain tiles warped after they were manufactured and shipped from the manufacturer, but I have never seen any proof of it.
Some types of…
Read MoreWhat is the acceptable amount of Tile Lippage for a Tile installed on a Wall with a 1/8" Grout Joint?
ANSWER - Tile lippage is the difference in height between two adjacent edges of tile, or of a crack or of a control joint in concrete. ANSI A108.02-2013, section 4.3.7 Lippage states that a ceramic…
Read MoreWhat is the acceptable Tile Grout Joint Width and Tile Lippage for tiles with one edge larger than 15 inches?
ANSWER - ANSI A108.02-2013 standards say that the grout joint width should be at least 3 times the actual variation of facial dimensions, but never less than 1/16” wide.
Does my porcelain wood tile plank floor have excessive lippage?
ANSWER - Your floor tile appears to be a porcelain wood plank floor tile, which gives a very authentic wood floor look. With the ink jet technology being used today in the production of ceramic tiles…
Read MoreWhat are the allowable size of voids under porcelain tiles?
ANSWER - First of all not all hollow sounds are voids. Having hollow sounds is not a deficiency and there are no standards addressing hollow sounds, other to say that hollow sounds don't necessary mean…
Read MoreDoes my terrazzo floor need replaced after being subjected to a flood?
ANSWER - I'm guessing that the terrazzo floor is the cementitious type and not the epoxy type, but either way, if the terrazzo floor was originally installed correctly, it should not have been harmed by…
Read MoreShould my Porcelain Tile Sound Hollow over Schluter-Ditra Uncoupling Membrane?
ANSWER - Hollow sounding tile is not considered a defect. It can be an indication that there are voids under tiles or that the tile or the underlying components are not bonded for one reason…
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