Menu
Menu
Your Cart

Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane - 15 Kg

Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane  - 15 Kg
Guide Price
Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane - 15 Kg
Guide Price: £77.00 (£92.40 inc VAT)
  • Product Code: A1-4787
  • Delivery Time: In Stock 1-2 working days
  • Brand: Knauf
  • (Tech. support: 08000304135)
  • Model and Size: 15kg
  • Weight: 15.00kg
Our ratings on 12-05-2025:
Google My Business Reviews
4.8 out of 5

4.7 out of 5 - Excellent

Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane - 15 Kg

Weight: 15kg

Knauf Hydro Flex Liquid Foil Waterproof Tanking Membrane is a one-component, ready-to-use highly plastic liquid waterproof tanking membrane for wall and floor surfaces under ceramic tiles. Although the tiles themselves are impermeable to water, the joints between them are not 100% waterproof. Even with very precise grouting, there are micro-gaps between the tiles through which moisture can penetrate. This is a simple path to the growth of fungi and mold. 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.

     

CHARACTERISTICS

  • Waterproof - protects the substrate,
  • Ready to use,
  • Easy 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,
  • The 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. First, prime the diluted liquid foil, three hours after priming, apply the first layer of proper waterproofing, wait 3 hours for the foil to dry and finally apply the second layer.

100mm Knauf Earthwool Rafter Roll (pallet of 24)
Guide Price
Brand: Knauf Model and Size: 1200mm x 4000mm - 115.20m2
Delivery Time: 4 - 5 weeks
100mm Knauf Earthwool Rafter Roll is a premium insulation product specifically designed for use in pitched roofs and rafter spaces. Manufactured using Knauf's innovative Ecose Technology, this insulation solution is made from sustainable materials, ensuring a reduced environmental impact while provi..
Guide Price: £2,826.14
£3,391.37 inc VAT
Get Best Price
Brand: Knauf Model and Size: 1200mm x 1000mm - 28.8m2
Delivery Time: 8 - 12 weeks
105mm Knauf Rocksilk Krimpact Flat Roof Slab Extra is a high-performance insulation solution designed specifically for flat roofing applications. Manufactured from non-combustible stone wool, this product offers excellent thermal insulation properties, helping to maintain comfortable indoor temperat..
Get Best Price
Brand: Knauf Model and Size: 1200mm x 600mm - 8.64m2
Delivery Time: 2 - 5 working days
50mm Knauf Omnifit 35 Glass Wool Slabs are rigid multipurpose, flexible, non-combustible glass mineral wool slab that is designed for friction fitting installation at 600mm spacings. It has excellent thermal, acoustic, and fire resistance. The sound absorption qualities of Knauf Omnifit slabs are re..
Get Best Price
Brand: Knauf Model and Size: 1200mm x 1000mm - 16.8m2
Delivery Time: 2 - 3 working days
160mm Knauf Rocksilk Krimpact Flat Roof Slab is a high-performance insulation solution designed specifically for flat roofing applications. Manufactured from non-combustible stone wool, this product offers excellent thermal insulation properties, helping to maintain comfortable indoor temperatures w..
Get Best Price
Brand: Knauf Model and Size: 1000mm x 50m
Delivery Time: 2 - 3 working days
Knauf Aquapanel Exterior Reinforcing Mesh is a 200mm wide glass fabric mesh designed to resist sliding. It is manufactured from glass filament fibres with a nominal diameter of <5m. It is used to reinforce Aquapanel Exterior Basecoat and Aquapanel Joint Filler.INSTALLATIONApply Aquapanel Ext..
£207.68
£249.22 inc VAT
Add to Cart
Brand: Knauf Model and Size: 4.5m x 1.4m - 5.13m2
Delivery Time: 3 - 5 days
90mm Knauf Earthwool FrameTherm Roll is a lightweight, flexible, resilient and non-combustible glass mineral wool quilt, used for friction fitting between timber studs and rafters. The rolls are 1140mm wide and ready cut to produce 3 rolls in 380mm widths. It is specifically designed for friction fi..
Get Best Price
This product is listed in the following categories and systems (click to show).