Expert Answers in Standards

ANSWER - The standards for a porcelain tile is that the substrate can not have more deflection than L/360.  For natural stone over a wood subfloor it is L/720.  L stands for…

ANSWER - As long as the linoleum is well attached to its substrate, and the substrate is structurally sound, then you can install tile over it.  The new tile installation will only be as good…

ANSWER - It is hard to see exactly what they did.  Your message says “photo thin set 1/16” is on the floor, 1.5” to 2.5” of mortar mix with less than 90% coverage, and thin-set 1/16”…

ANSWER - ANSI A108.02 are the standards for tile installer workmanship.  Some of the standards are quantitative, but many are qualitative and subjective. The only reference to alignment is that the tile should be installed…

ANSWER - When there is a problem it normally is not due to one deficiency, but due to multiple compounding deficiencies. You state that the peel and stick moisture barrier was properly installed.  If if…

ANSWER - First of all, per industry standards hollow sounding tiles are not considered a defect per-se.  Although a hollow sounding tile, or a portion of a tile sounding hollow, can possibly be a symptom…

ANSWER - Tile having a hollow sound is not considered a defect in itself.  It can be a symptom of a defect.  There are many reasons why a tile can sound hollow.  It could be…

ANSWER - Per ANSI A108.10 Installation of grout in Tilework, it says that all grout joints shall be uniformly finished. Cushion edge tile shall be finished evenly to the depth of the cushion. The grout…

ANSWER - First of all you need to make sure that the substrate to which you will be adhering the tiles are suitable for the application.  In bathrooms you want to use materials that are…

ANSWER - The standards for Quartz Stone or Engineered Stone, which is a man-made product that generally is made up of about 90% quartz with resin, are currently the same standards as for natural stone.…