QUESTIONPlease I want your advice.
During the final inspection after Tiles were installed and grouted the consultant is inspecting with his hands & knees on the floor and rejecting the tile installation...
Please I want any BS/EN Standard _or American standard or code of practice stating that he must inspect on an Eye level.
I already purchased the below EN:1469:2004 but it is mentioned for samples prior installation, so I need some documents stating the inspection on an Eye level for the installed Tiles
Thank you for your valuable information
ANSWERANSWER - 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 been installed, for facial defects. You have to stand 3 feet away from area being inspected, you have to have certain lighting 8 to 9 feet above the floor, and you can only look for 60 sections per array or 6 seconds per square foot of tile array.
On the other hand, there are some quantitative standards for some tile conditions such as lippage, slope, flatness, and grout joint widths. The only way to evaluate those conditions is to get on your hands and knees.
There are also standards such as the Handbook for Ceramic, Glass, and Stone Tile Installations that point out that wall wash light and other types of lighting at various positions can cause tile conditions to look excessive, when in fact quantitatively they are not.