Use KefaWash for the pre-treatment of surfaces that have already been attacked by mould and bacteria. To do this, first remove the wallpaper completely and repair the surface if required. Clean off areas attacked by mould with a thinned solution of KefaWash (in the ratio 1: 1).
approx. 150 to 200 ml/m2
Reaction time: Allow to react for 30 minutes. Then clean surface with clear water and a damp sponge or cloth.
Drying: approx. 2 h
Stir KefaRid well before use. Apply a first layer (approx. 250 g/m2) with a brush or roller, allow to dry and build up the desired layer thickness via subsequent coatings.
KefaRid material requirements: 600 to 800 g/m2 (Important: For the microporous surface to successfully develop its physical action, the layer thickness must be at least 600 g of wet material per m2.)
Drying: The drying time for each layer is approx.4 to 8 h at approx. 20 °C. Provide adequate air circulation during application and drying time.
Cleaning: Clean tool with clean water.