Basement Waterproofing

Cavity Drain Membranes for Basements & Cellars

Cavity drain membranes are a proven solution for managing water ingress in basements, cellars and below-ground structures. Rather than attempting to block water, these systems control and direct it safely away, helping to create dry, usable internal spaces.

Basement membranes are suitable for refurbishment projects, basement conversions and new-build construction. Manufactured from durable, high-performance materials, they are designed to provide long-term reliability when installed as part of a complete waterproofing system.

Waterproof & Dry stock a wide range of cavity drain membranes for internal and external applications, including:

• Clear studded wall membranes for internal basement walls
• Mesh-backed wall membranes providing a key for internal finishes
• High-capacity floor membranes for basements with increased drainage demands
• External cavity drain membranes for new construction and retaining structures

For situations where a barrier system is required, we also stock a range of cementitious tanking products.

If you’re looking for above-ground solutions, explore our full range of damp proofing membranes.

Basement Waterproofing Systems

In below-ground environments, waterproofing systems must be capable of dealing with ongoing groundwater pressure and moisture ingress.

Cavity drain membranes are commonly used as part of a Type C (drained) waterproofing system, where water entering the structure is controlled and directed to a suitable discharge point rather than being resisted at the wall face.

In most basement installations, collected water is channelled to a sump pump system, ensuring it is safely removed from the building.

These systems typically incorporate compatible basement floor membranes, available in different stud depths to suit varying levels of water ingress and drainage requirements.

Installing a Cavity Drain Membrane

Cavity drain membranes are relatively straightforward to install and generally require minimal surface preparation. They are mechanically fixed to walls and floors and connected to perimeter drainage channels where required.

Read our complete guide to installing a basement cavity drain waterproofing system.

Why Buy from Waterproof & Dry?

Waterproof & Dry are independent specialists in basement waterproofing and damp-proofing systems, supplying reliable solutions for projects across the UK.

Our in-house technical team is available to provide free, practical advice on product selection and system design.

Need help with your project? Call us on 0117 332 4747.