Waterproofing of facade socket part with door connection within ETICS

Basically, a durably dry building structure also includes a long-term waterproofed facade socket part. This building part is highly stressed by temperature fluctuations, splash water, salts and freeze/thaw cycles. In order to create a homogeneous, seamless and accurate waterproofing from the basement to the socket, it is crucial to know how the facade will be constructed and where the upper ground level will be later. If it is an ETICS socket, we recommend the waterproofing systems with cement-based flexible waterproofing slurries or with reactive waterproofing coatings, such as weber.tec Superflex D 2 or D 24 (in accordance with DIN 18533).

Simple & safe to the goal

  1. 1. Scratch test: a manual test to determine whether cement laitance is present on the concrete surface. Existing cement laitance layers must be removed mechanically, as they often detach from the substrate and do not provide a sufficient underlay for waterproofing.

  2. 2. When connecting the socket part with an ETICS, the waterproofing is carried out up to the top edge of the socket part. For this purpose, fill broken-out areas and defects (such as mortar pockets, open butt joints and cavities) with a width and depth ˃ 5 mm with e.g. the watertight mortar weber.tec 933. This is followed by the application of the primer for absorbent substrates weber.prim 900, diluted with water in a ratio of 1 : 1 part by volume.

  3. 3. Substrates with the textured pattern or with porous aggregate particles must be levelled with a filling layer of weber.tec Superflex D 2 or weber.tec Superflex D 24 mixed with the silica sand weber.sys Hartquartzmaterial (grain size 0.1 - 0.5 mm) in a ratio of 3 : 1 parts by volume.

  4. 4. Completed waterproofing belt of the socket part (with weber.tec Superflex D 2 / D 24) up to approx. 30 cm above ground level. Later applied bitumen-based basement wall waterproofing (for ex. weber.tec Superflex 10) is applied with an overlapping up to 20 cm under the final ground level on the pre-said reactive waterproofing.

  5. 5. In case of protruding backup masonry (with overhang), the waterproofing is carried out horizontally from the concrete slab or the ceiling slab around the erected masonry and up to 30 cm in the socket area, incorporating the watertight foil weber.sys 982.

    Alternative: a negative groove (in the internal angle between the basement wall and concrete slab) of weber.tec 933 can be created in advance; in this case, the insertion weber.sys 982 into the waterproofing layer can be omitted.

  6. 6. Waterproofing detail window/door connection.
    In the corner areas, weber.sys 982 is embedded in the 2-layer waterproofing weber.tec Superflex D 2 / D 24. After drying, apply the second waterproofing layer with a block brush.

  7. 7. The window/door profile is completely waterproofed and connected to the surrounding waterproofing of the socket part.


  8. 8. weber.sys 982 or weber.sys 982 SK is embedded full-surface in the first layer on the area with the lower door beam.

  9. 9. Completely waterproofed detail point after through-drying.

  10. 10. View of the ETICS facade after completion of all details around the door threshold.

  11. 11. Humidity protection of socket part: carry out the waterproofing with weber.tec Superflex D 2 / D 24 up to approx. 5 cm above ground level. The waterproofing coating can be painted with weber.ton paints, preferably the silicone resin paint weber.ton 411 AquaBalance or the silicate egalizing paint weber.ton 414 AquaBalance.

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