Standard-compliant waterproofing layer as part of joint sealing
Joint sealing provides a cost-effective solution for sealing floor drains in damp and wet rooms. This involves applying a special sealant – suitable for brushing or trowelling – to the screed; once cured, it remains flexible and therefore does not crack. When using joint sealing, the requirements for building waterproofing set out in DIN 18534 must be observed.
Creating a composite seal
1. Install the drain
Install the drain body (with an additional waterproofing sheet if necessary) and the thin-bed extension piece so that the latter is flush with the screed and fully backfilled.
2. Apply the waterproofing membrane
Remove the temporary cover, clean the flange surface, apply the assembly adhesive and fit the supplied waterproofing membrane.
3. Complete the floor installation
Screw the grating cover in place, including the mating flange. Lay the floor covering and allow it to cure, then grout the grating recesses.
Compatibility of construction chemicals and adhesives
In the field of drainage technology, we offer drains and channels with an enclosed waterproofing membrane. These must be fixed to the drain or channel on site. We have therefore tested various adhesives and can confirm that they meet the requirements of standards EN 1253 and DIN 18534 regarding pull-out forces.
- Würth Basic WIT PM 200
- Hilti HIT 1
- Fischer FIS VL
- Walraven WIS WVSF 200
In collaboration with various manufacturers of construction chemicals, we have also produced system data sheets for composite sealing, confirming that our waterproofing membranes are compatible with the sealing products of these manufacturers.
