Knauf Hydro Flex Waterproof Liquid Film - 15 Kg

Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane is a one-component, ready-to-use plastic liquid waterproof tanking membrane for wall and floor surfaces under ceramic tiles. The liquid foil helps protect joints and gaps between tile from allowing water through as although the tiles themselves are impermeable to water, the joints between them are not 100% waterproof. There are even micro-gaps between the tiles after perfect grouting which can allow moisture to penetrate. Allowing water to penetrate is a simple path to the growth of fungi and mould. To avoid this, it is best to insulate the surface under the tiles with Knauf Hydro Flex liquid foil. The foil creates a waterproof layer that acts as a barrier to moisture and prevents it from penetrating the substrate.

Properties

• Waterproof - protects the substrate,
• Easy to use,
• Ready to apply,
• For use inside buildings,
• No primer required, Crack-bridging capacity 0.75 mm,
• Coating thickness 0.3 mm,
• Minimum thickness of the finished coating, 1 mm (two layers),
• One layer drying time, 3 hours,
• Possibility of laying tiles after 12 hours.

Installation

• The substrate must be dry, clean and dust-free,
• Choose the wet zones, such as the entire floor surface, areas around the shower tray, washbasins or bathtubs,
• Prime the substrate; dilute the Hydro Flex in a ratio 1:4 with water, prime the wet zones with a brush or roller,
• Let the primed surface to dry for 3 hours,
• Fix sealing tapes to wall-floor joints,
• Tape overlap must be at least 2 cm,
• Fix internal/external corner sealing stripes where necessary,
• Fix sealing tapes around pipes and other protruding objects and holes,
• Apply Hydro Flex straight from the tub to the surface of the wet zones,
• After laying tiles on the walls, apply Hydro Flex liquid foil waterproofing to the floor.
• Repeat all the activities when insulating the walls.