Tanking Products

Cementitious Tanking Products

Cementitious tanking products are used to form a waterproof barrier on internal walls and floors, helping to prevent moisture from entering basements, cellars and other below-ground structures.

While it is always preferable to waterproof externally during construction, this is not always practical on existing buildings. Internal tanking systems provide an alternative solution where external access is limited or unavailable.

Tanking Products

Waterproof & Dry stock a range of cementitious tanking and preparation products, including:

• Cementitious tanking slurries for internal waterproofing
• Waterproof repair mortars for substrate preparation
• Salt-inhibiting primers for contaminated masonry

If you’re working externally, explore our range of external waterproofing products, including liquid-applied coatings and external drainage membranes.

Tanking a Basement

Cementitious tanking slurries are applied directly to masonry to create a continuous waterproof barrier. Once cured, the coating helps resist moisture ingress and provides a suitable surface for further finishes where permitted.

Tanking systems are commonly used in basements, cellars and retaining structures, and can also be specified for other applications such as lift pits, service voids and plant rooms.

Basement Wall Tanking

Basement wall tanking can be used as an alternative to cavity drain membrane systems where site conditions allow. Successful installation depends on correct preparation, with substrates required to be clean, sound and free from contamination.

Defects, joints and weak areas should be addressed before tanking using suitable repair mortars to ensure continuity of the waterproof barrier.

Managing Salt Contamination

Where moisture has previously entered a structure, soluble salts can be drawn into masonry and plaster. These salts may crystallise over time, damaging finishes and affecting long-term performance.

Salt-inhibiting primers can be used prior to tanking to help reduce salt migration and improve compatibility between the substrate and the waterproof coating.

Tanking Systems & Limitations

Internal tanking systems do not require external excavation, making them less disruptive than some alternative approaches. However, they rely on correct detailing and site conditions, and may not be suitable for all basements.

Our technical team can advise whether tanking or a drained cavity system is the most appropriate solution for your project.

Why Buy from Waterproof & Dry?

Waterproof & Dry are independent specialists in basement waterproofing and damp-proofing systems, supplying proven tanking products for a wide range of applications.

We offer free technical advice to help you select the right materials and approach for your structure and moisture conditions.

Need advice on tanking your basement? Call us on 0117 332 4747.