PEI 1
Is intended for low stressed floors, primarily stepped on bare feet. Like the masters bathroom.
PEI 2
Is intended for low stressed floors, primarily stepped by slippers. Like private living rooms.
PEI 3
Is for normal stressed floors which can be also stepped by normal shoes. Like the floor or the living room.
PEI 4
Is for heavily used and highly frequented living or business rooms.
Permanent wet area
All areas, which a heavily exposed and also submerged in water. For example shower floors or pools. Ceramic mesh mounted mosaics can only be installed in pools when installed correctly (e.g. all areas with Epoxy glue).
Frost resistance
Mosaics with this pictogram are frost resistant and for outdoor areas.
Wet areas
All mosaic areas which are temporary exposed by a higher amount of water. For example tiled shower walls.
Surefootness
Mosaics with the surefootness symbol marked with with R9 or R10 and/or with the letters A,B,C.
Splash water area
All mosaic areas, which are sometimes exposed by very small amounts of water. For example the backsplash in the kitchen or behind the sink.