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05 // PREPARATION
TESTING THE SUBFLOOR
TESTING OF NEW MINERAL AND
ORGANIC SUBFLOORS
TESTING THE EVENNESS
CLASSEN polymer tiles can be installed on almost all subfloors as well as some old
coverings. Basically, a distinction can be made between
- mineral subfloors (e.g. gypsum board, anhydrite screed, ... )
- organic subfloors (OSB boards, plywood boards ... )
- existing old coverings (tiles, parquet).
“The testing of mineral as well as organic subfloors must be conducted in accordance
with DIN 18365 (“Bodenbelagsarbeiten”). This applies to the floor as well as, in the
absence of a corresponding standard, to the wall.
Existing old coverings are not covered by a standard and are discussed below in relation
to the installation of CLASSEN Polymer tiles on walls and floors.”
Please observe the minimum requirements for screeds in DIN 18560 and DIN 18202,
“Toleranzen im Hochbau”.
Condition of the subfloor: The subfloor must be load-bearing, permanently dry, clean,
free of dust, oil and grease, even and rigid. Unevenness of more than 2 mm/m must be
filled or levelled. The individual properties must be checked and documented
in accordance with DIN 18365.
ATTENTION: Unevenness of more than 2 mm/m must be filled or leveled.
max. 2 mm / 1 m
5/64 inch / 1 inch