Kerakoll Aquastop Nanoflex Waterproofing Membrane 20kg

In stock

Product Options:


  • Floors and walls, for internal and external use
  • Breathable
  • Crack-Bridging at low temperatures
  • Specifically intended for laying porcelain, ceramics, natural stone and glass mosaic using inorganic adhesives from the Biogel® range
  • Suitable for overlaying
  • 30% better coverage than two-component systems
  • 20 kg paper bags with carrier handle

Nanotech technology which makes it completely water repellent and gives permanent elasticity and high chemical stability.

Certified, eco-friendly, breathable, anti-alkali and chlorine-resistant, mineral membrane for the flexible waterproofing with high levels of adhesion and durability of substrates before laying with adhesives, ideal for use in GreenBuilding. Single-component with low CO2 emissions and very low volatile organic compound emissions, recyclable as an inert material at the end of its life.

Aquastop Nanoflex® develops a smooth, fluid mixture that can be adjusted by varying the amount of water in order to obtain optimal workability for the particular site conditions, guaranteeing maximum adhesion of the bonded system.

Terraces, balconies, horizontal surfaces and swimming pools on mineral screeds, monolithic cement-based screeds, existing floors covered with ceramic and marble tiles, dimensionally stable natural stone well-anchored to the substrate and clean, cement-based plasters/renders and cementitious mortars, aged concrete.

Do not use
On gypsum or anhydrite-based substrates without the use of Primer A Eco eco-friendly, water-based surface isolation, on metal or wood substrates, on bituminous sheeting, to waterproof exposed surfaces subject to foot traffic, on low-density screeds, on insulation layers on inverted roofs made with insulating panels or low-density materials, in swimming pools and tanks used to hold exposed water, when adhesion of the coverings requires the use with Biogel® Extreme® or reactive adhesives.

Special Note:
Pools, tanks, basements and foundations in cured reinforced concrete: break the spacer holes mechanically and clean them suitably, then apply Aquastop Nanosil neutral organic silane sealant and level the surface with a suitable finishing product. Waterproof the corners by anchoring Aquastop 120 tape with adhesive from the Biogel® range, creating special pieces for external angles, internal angles and connections to drains and installations by cutting the tape itself. Where there is insufficient space to use Aquastop 120 tape, apply Aquastop Nanosil sealant.

Pack size 20 kg bag
Coverage ≈ 1.15 kg / m 2 per mm of thickness
Shelf life ≈ 12 months
Mixing water ≈ 5 – 6 ℓ / 1 20 kg bag
Pot life ≥ 1 hr
Temperature range for application from +5 °C to +35 °C

More Information

Brand Kerakoll
Coverage 1.15 kg / m 2 per mm of thickness
Size 20kg
Type Waterproofing

Delivery Costs:

Delivery fees are calculated based on the weight of your order and your delivery location. You can use the delivery fee calculator in your basket or on the checkout page to find the exact cost.

Delivery Area:

We currently only deliver to UK Mainland and the Highlands. We do not deliver to the Islands, Ireland, or Northern Ireland.

Next Working Day Delivery (Subject to Stock Availability):

Orders placed before 12:00 pm (noon) will be delivered the next working day, excluding weekends and holidays. This service starts from £6.50 (including VAT) and the final cost is based on the weight of your order and your delivery location. You can check the exact cost in your shopping cart or on the checkout page by entering your postcode.

Economy Service (2-3 Working Days):

This service is only available for orders over 50kg. There is no additional charge for this service.

Sample Orders:

All sample orders are shipped for free via Royal Mail Tracked 48 or 24 service. Delivery typically takes 1-3 working days.

Delivery Methods:

Non-sample orders under 50kg will be dispatched via DPD or APC Overnight. Non-sample orders over 50kg (quarter, half, and full pallets) will be dispatched via Palletways or Kandrmason.


Simply place your order online and choose the Click & Collect option at checkout.
We'll email you once your order is ready for pickup at your chosen store.
Collection hours: Monday - Friday: 8:30 am to 4:30 pm

For more information, please visit our Delivery Information page.

- Please inspect your order for any damages upon delivery and notify us immediately if you find any.

- We will replace any items that are damaged during transit.

- We accept returns within 30 days of delivery.

- Please note that customers are responsible for the cost of returning items.

- We will process returns and refunds promptly once the items are received at our warehouse.

Returning Trims
Schluter Trime
Returning trims - 35% restocking fees applied.
Returnign trim with replacement - 15% restocking fees applied
Customers are responsible to arrange returning the item.
If we arrange a return colleciton, a £35 return item collection feed will be applied.

Mapei-Profilpas Trims
A 20% restocking fee will be applied. (Item must be in re-sellable condition)
The customer is responsible for returning the item.

For more information, please visit our Return & Exchange page.


Product Questions