Description
HydraFlex Tanking Slurry – Flexible Waterproofing Membrane
Overview
HydraFlex Tanking Slurry is a high-performance two-component waterproofing system designed to protect concrete and masonry surfaces from water ingress.
The system combines a cementitious powder with a high-performance polymer liquid to create a flexible waterproof membrane that forms a seamless protective barrier when applied to suitable substrates.
HydraFlex is capable of resisting significant hydrostatic pressure and provides long-term waterproof protection for below-ground structures and exposed masonry.
Its flexible formulation allows the membrane to bridge small cracks and accommodate minor substrate movement while maintaining a watertight seal.
Key Benefits
- ✔ High resistance to hydrostatic water pressure
- ✔ Flexible crack-bridging waterproof membrane
- ✔ Remains effective at temperatures down to approximately −5°C
- ✔ Thixotropic properties allow application to vertical and overhead surfaces
- ✔ Suitable for internal and external waterproofing applications
- ✔ Provides an additional barrier against radon gas when applied correctly
Typical Applications
- Basements and cellars
- Foundations and retaining walls
- Lift pits and service pits
- Podium decks
- Balconies and terraces
- Concrete and masonry structures
- Flat roofs and exposed substrates
Technical Specifications
| Specification | Details |
|---|---|
| System Type | Two-component flexible tanking slurry |
| Water Pressure Resistance | Resistant to high hydrostatic pressure (tested up to approx. 7 bar) |
| Mix Ratio | 15kg cementitious powder + 5kg polymer liquid |
| Total Unit Weight | 20kg |
| Coverage | Approx. 6m² per unit at 2mm thickness |
| Application Methods | Brush, roller, or trowel |
| Pot Life | Approx. 40 minutes after mixing |
| Curing Time | Approx. 48 hours |
| Shelf Life | 6 months unopened |
| Storage | Store in cool, dry conditions away from frost |
Application Guidelines
Surface Preparation
Ensure the surface is clean, sound and free from dust, grease, oils or other contaminants. Remove loose material and repair defects before application.
Uneven surfaces may be levelled using suitable repair mortars prior to applying HydraFlex.
Mixing
Gradually add the cementitious powder to the polymer liquid while mixing continuously until a smooth slurry is achieved.
If required, up to 0.5 litres of clean water may be added to adjust the consistency.
Application
- Apply the first coat at approximately 1–1.5mm thickness.
- Ensure complete surface coverage.
- Allow the first coat to cure before applying the second coat.
- Apply the second coat to achieve a total thickness of approximately 2mm.
Curing
Protect freshly applied material from direct sunlight, strong winds and rapid drying for at least 48 hours to allow proper curing.
Why Choose HydraFlex Tanking Slurry?
HydraFlex provides a reliable flexible waterproofing solution for structures exposed to water pressure. Its crack-bridging properties and strong adhesion make it suitable for demanding waterproofing applications including basements, foundations and structural waterproofing systems.
Need Technical Advice?
For bulk orders, technical guidance or project support contact our team.
📞 Call us: 01268 472358
Videos
Installation Guide
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Security

You may also be interested in
Recently viewed
What Our Customers Say
Very good 4.7/5
Exceptional Advice & Support
Hands down in all of my reviews I've done in 21+ years, Clever Shield Coatings is one I'll always remember as the staff are friendly & passionate about their job - looking out for the customer and getting the job done right first time.
Sunny
Verified customer
Fast, friendly and reliable…
Fast, friendly and reliable. I was able to get my job done quickly and my customer was happy with the prices.
Thanks.
Kamil
Verified customer
Exceptional Advice & Support
We have been using clever shield (dealing with Richard) for over 2 years. They always give good service deliveries on time and even give technical advise when needed.
JAC
Verified customer
Really helpful! great service
Spoke to technical for some advice on the product and it was really helpful, great service
Tina Mansfield
Verified customer
Great company / knowledgeable
What a great company - knowledge about the products, spent lots of time talking me through everything - if only every company was like this one !
Ostler Info
Verified customer
Great company and speedy delivery
Really great company to deal with,excellent customer service,speedy delivery will definitely recommend and use again as a satisfied customer
Del Upson
Verified customer
Great Technical Support
Great technical support and advice on wykamol products would highly recommend this company
Shirley
Verified customer
Highly Recommended
Sandra Dow
Verified customer



