Wet room waterproofing with liquid synthetics

Only a few building elements are so constantly exposed to water as kitchens and bathrooms. In these cases a professional and crack bridging waterproofing material is required. Furthermore it must be stable enough so that tiles can be applied on top of it.

The KÖSTER BD-System is a complete system for water proofing underneath tiles according to ETAG 022. The dry and stable substrate is primed with KÖSTER BD 50 Primer. As a waterproofing layer KÖSTER BD 50 is applied. In corners and connection areas the pre-formed waterproofing elements KÖSTER BD Inside Corner, KÖSTER BD Outside Corner, KÖSTER BD Wall Sleeve and the KÖSTER BD Floor Sleeve are embedded into the waterproofing layer. At wall / floor junctions and joints KÖSTER BD Flex Tape K 120 is embedded. In areas where a reinforcement is embedded, movements won’t cause damage to the waterproofing material.

Always adhere to the specifications in the respective Technical Guidelines.

Waterproofing of balconies and terraces with cold applied self adhesive membranes

A fast and easy method for waterproofing balconies and terraces is using the cold applied self adhesive KÖSTER KSK waterproofing membranes.

The solid and clean concrete substrate is primed with KÖSTER KBE Liquid Film which provides an excellent bond between the concrete and waterproofing layer. In case of temperatures below 0 °C the non water based KÖSTER KSK Primer SP is used.

A fillet in the wall-floor-junction can be easily installed by using the KÖSTER KSK Triangular Ribbon: Remove the protective foil, press into the primed corner, done! Alternatively, before priming the substrate a fillet made of KÖSTER Repair Mortar Plus is applied.

The standard area waterproofing is done with KÖSTER KSK SY 15. In case of temperatures below 0 °C KÖSTER KSK AW 15 is the material of choice. The waterproofing membranes are simply bonded onto the prepared substrate and overlapped min. 10 cm on each side.

If the waterproofing is applied vertically onto a wall, the waterproofing membrane is mechanically fixed. Connections and overlaps are sealed with KÖSTER BS 1 Bitumen Paste. If the top end of the waterproofing is to be plastered, it can be covered with KÖSTER Butyl Fix-Tape Fleece.

A screed protects the waterproofing against mechanical damage. A gliding layer consisting of 2 layers of PE-foil is installed under the screed.

Always adhere to the specifications in the respective Technical Guidelines.