Prepare the substrate for application
The substrate must be clean, sound, flat and able to carry the covering. Dust, oil and weak layers are removed; cracks and voids are made good with a suitable repair system. The fall towards the drain is checked before waterproofing. If a primer is required, a product suited to the substrate type is chosen; the same primer is not applied to every substrate.
Resolve the corner, pipe and drain details
The weak points in waterproofing are mostly wall-floor junctions, internal and external corners, pipe penetrations and the area around the drain. Suitable KR-JTK waterproofing detail accessories are used in these areas. Tapes and collars must form a continuous, unbroken whole with the main waterproofing layer.
Apply the fully flexible waterproofing system
KR-5100 is used together with KR-5100-2 in the grey system, and KR-5150 with KR-5150-2 in the white system. The component ratio, number of coats, application direction, waiting time between coats and total curing time are applied according to the information in the current technical data sheet. No gaps must be left at corners or around the drain.
Complete the tile and grout layer
Once the waterproofing is ready to accept a covering, the tiles are fixed with KR-8000 in the grey system and KR-8500 where white is required. For large formats, double-sided application and levelling are used. The main bathroom grout is KR-250 FUGA KRAFT POOL. Where there are high chemical or special hygiene requirements, KR-300 FUGA KRAFT EPOXY is considered.
Water test and use
The water test and the time at which the system is put into use are planned according to the technical data sheets of the chosen products and the project conditions. Early exposure to water can put the performance of the layers at risk.
Product recommendations in this content are based on the KraftBau system file. For consumption, mixing ratio, layer thickness and waiting times, refer to the product's current technical data sheet (TDS); for your project conditions, get technical support.
