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Gluing a new floor covering directly onto an existing old floor covering is not in accord-
ance with DIN and is not covered by DIN 18365 “Bodenbelagsarbeiten”.
However, interactions between the new covering, the old covering and the adhesive
cannot be excluded. Bonding on ceramic tiles is less problematic if permanent dryness,
strength and load-bearing capacity are given.
OLD CARPETING:
Must be necessarily removed.
OLD TILES:
Depending on the evenness, they may need to be sanded down.
OLD WOODEN FLOORS:
Must be sanded, fixed, levelled as necessary.
PROCEDURE (OLD COATINGS MUST BE SUFFICIENTLY FIRMLY BONDED):
intensive basic cleaning (e.g. with black pad) > surface free of disturbing care
products and separating layers
vacuum the dirt
Neutralize surface with plain water
vacuum, minimum drying time 24 hours
sanding, vacuuming with an industrial vacuum cleaner, filling with a
migration barrier
Gluing the new covering with a suitable adhesive
ATTENTION: Visible indentations remain permanently. In addition, there are
possible interactions in case of non-compliance or poor execution:
Odour nuisance
Colour changes
Removal of coverings
EXISTING OLD COVERINGS