weber.xerm KM Flex (Plastikol KM Flex) is a flexible adhesive mortar, deformable, with increased adhesion, easy to apply, with extended open time.

properties

• especially recommended for porcelain stoneware and non-absorbent surfaces
• high adhesion to the ground
• a long time to correct tiles
• very easy to work with
• in and out
• for making thin putty (up to 6 mm)

Application

weber.xerm KM Flex is used in particular:

• in places exposed to thermal loads (balconies, terraces, pedestals, etc.),
• on deformable substrates exposed to low stresses or slight vibrations,
• in places exposed to light water load (e.g. bathrooms, showers),
• in swimming pools,
• for sticking tile to tile,
• for use in underfloor heating systems.

Weber.xerm KM Flex adhesive mortar is suitable for wall and floor cladding made of ceramic tiles, mosaics, stoneware, faience, clinker, glaze, glass mosaic, lightweight construction and insulation boards. The foundation under the cladding can be:

• concrete,
• traditional plaster (e.g. cement, cement-lime),
• cement screed (both composite, on the separating and floating layer),
• anhydrite screed,
• wall with small-sized elements (brick, concrete block, cellular concrete block, etc.),
• gypsum boards, drywall, dry gypsum screed,
• composite seal (sealing sludge, e.g. weber.tec Supeflex D 2, weber.tec 824 (Superflex D 1) or liquid foil, e.g. weber.tec 822 (Superflex 1).

weber.xerm KM Flex is also suitable for bonding tiles that are not discolored to natural stone. Due to the large number of growing tiles and slabs of natural stone on the market, it is not possible to establish a general rule for using weber.xerm KM Flex to glue them. In doubtful cases, please try. To glue discoloration-sensitive natural stones, use adhesives dedicated to such applications, e.g. weber.xerm 853 F (DEITERMANN KM Flex + Fix white).