Rooms with no waterproofing layer requirements
No special waterproofing layer is required for floor drains installed beneath waterproof floor coverings or in certain basement rooms where no moisture is present. This applies to both PVC and linoleum floors, as well as areas classified as water exposure class W0-I / W1-I under DIN 18534.
In accordance with DIN 18534, a waterproofing layer may only be omitted if the following conditions apply.
- On wall surfaces subject to moderate water exposure (W1-I), provided that moisture-insensitive substrates are present which can ensure adequate moisture protection and that service water cannot penetrate into moisture-insensitive building component layers (e.g. insulation layers) (penetrations as well as edge and connection joints must be permanently protected against water ingress)
- In areas with low water exposure (W0-I), provided that water-repellent surfaces are present which provide adequate protection
- In areas where no splash water exposure is expected
Creating a floor waterproofing layer
1. Lay the floor covering
Apply the adhesive and lay the floor covering over the correctly aligned upper section of the skirting board.
2. Cut out
Cut out the floor covering around the drain opening.
3. Pressing in
Press the floor covering into place using a clamp-type screw connection.
2. Odour trap
3. Upper section
Waterproofing layer in rooms without a waterproofing sheet
In basement rooms where the floor slab does not incorporate a waterproofing sheet, it may not be necessary to provide a separate waterproofing layer for drains. This is subject to the condition that a certain level of humidity can be tolerated and that water migration through the floor slab is sufficiently reduced by an underlying capillary-breaking fill layer (k > 10⁻⁴ m/s) at least 150 mm thick.
Installing a basement drain without a waterproofing layer
1. Connect the drain
Connect the outlet pipe to the drain pipe.
2. Secure the position
If necessary, weigh down the drain and perform fixing of the drain pipe with collars.
3. Pour the floor slab
Pour the floor slab so that the floor structure can then be completed.
