Joint Covering KERDIKERDIKEBA
Application and Function
Joint Covering KERDI is a crack-bridging waterproofing membrane made of soft-set polyethylene, equipped on both sides with a special fleece fabric for effective anchoring in tile adhesive. To facilitate cutting, Joint Covering KERDI is provided with a cutting grid on one side. In addition to the residual quantity indication, the minimum overlap width of 5 cm for the processing of the membranes with each other is shown.
Joint Covering KERDI was developed as a bonded waterproofing with coverings and linings made of tiles and slabs, and according to the required approval in Germany, it has an abP general building authority test certificate and is marked with a CE symbol. Moisture exposure class according to abP 0 B0 as well as A, B, and C.
Joint Covering KERDI also has an ETAG 022 bonded waterproofing European Technical Assessment (ETA) and is marked with a CE mark.
The waterproofing membrane is glued to a flat substrate with an appropriate tile adhesive. Tiles can be directly laid on Joint Covering KERDI using the thin-bed method. Other suitable trowelable covering materials or plaster layers can also be applied.
Joint Covering KERDI DS is a waterproofing membrane and vapor barrier in combination with a tile covering, e.g., for use in swimming pools and wellness areas, as well as in industrial areas with increased humidity. It can also be useful on moisture-sensitive substrates such as wood, plasterboard, or plaster.
Complementary to Joint Covering KERDI, interior and exterior corners as well as pipe sleeves are available. To seal butt joints or corner connections, the Joint Covering KERDIKEBA band is offered in widths of 85, 125, 15, 185, and 25 cm.
For sealing over movement joints or flexible edge joints, Joint Covering KERDIFLEX is available in widths of 125 cm or 25 cm.
Processing
The substrate must be free of adhesion-inhibiting components, load-bearing, and even. Any leveling measures must be carried out before installing Joint Covering KERDI.
The choice of adhesive for processing Joint Covering KERDI depends on the type of substrate. The adhesive must adhere to the substrate and mechanically lock into the fleece of Joint Covering KERDI. For most substrates, a hydraulically setting thin-bed mortar can be used. Compatibility issues should be checked if necessary.
Note: For areas requiring building authority approval, only system-tested thin-bed mortars should be used. These can be inquired about at the address provided in this data sheet.
The thin-bed mortar is applied to the substrate with a notched trowel, recommended 3 x 3 mm or 4 x 4 mm.
The pre-cut membranes of Joint Covering KERDI are fully embedded in the applied adhesive with the fleece fabric. To embed, the smooth side of the notched trowel or a float is recommended, which is pressed over the KERDI membrane. Air inclusions should be avoided. The open time of the adhesive must be observed.
KERDI membranes in butt joint areas should be overlapped by at least 5 cm with Joint Covering KERDI COLL or butted and fully bonded with Joint Covering KERDIKEBA using the sealing adhesive KERDI COLL.
For interior and exterior corners, pre-fabricated KERDI corners should be used. For corner joints, the Joint Covering KERDI band should be applied accordingly. For pipe penetrations, insert Joint Covering KERDI KM pipe sleeves. Connections to fixed built-in parts can also be made functionally.
Depending on the construction situation, Joint Covering KERDI, KERDI band, or KERDIFLEX can be used to create a tight connection with the component to be connected, using Joint Covering KERDI FIX.
In the area of thin-bed floor drains, a cut as an access sleeve of 50 x 50 cm from Joint Covering KERDI is clamped into the flange of the floor drain or sealed tightly. The adjacent Joint Covering KERDI membrane is brought up to about 10 cm to the floor drain and sealed without voids on the connection sleeve.
Note on floor drains: With Joint Covering KERDI DRAIN and KERDI LINE, special floor drains have been developed for connection to bonded waterproofing. Joint Covering KERDI can be quickly and securely processed here using the corresponding Joint Covering KERDI sleeves.
Existing movement joints or construction separation joints must be separated with Joint Covering KERDI and overlapped with Joint Covering KERDIFLEX over the butt joints. For flexible edge closures, use KERDIFLEX. Alternatively, KERDI band can be used if a corresponding loop is formed.
Once the entire bonded waterproofing, including overlaps, corners, and connections, is sealed with adhesive, the covering can be applied. No waiting time is necessary.
For tile laying, hydraulically setting thin-bed mortar is applied directly on Joint Covering KERDI, and the tiles are embedded largely flush with it. For chemically resistant coverings, suitable reactive resin adhesives and grout mortars should be used.
For areas where CE conformity or according to the abP general building authority test certificate is required, only system-tested thin-bed mortars should be used. The thin-bed mortars and the corresponding test certificates can be inquired about at the address provided in this data sheet.
- Item weight: 0,13 kg
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