Wykamol

Wykamol – UK Structural Waterproofing Specialists

For over 80 years, Wykamol has been a recognised name in UK property renovation and structural waterproofing. Established as a specialist manufacturer, the brand has evolved into a leading supplier of cavity drain membrane systems and associated drainage components used in residential, commercial and below-ground construction projects.

Manufactured in the UK using advanced extrusion technology, Wykamol membranes are designed to provide reliable Type C structural waterproofing solutions for basements, retaining walls and structural floors.

Type C Cavity Drain Membrane Systems

Wykamol cavity drain membranes are engineered to manage water safely by controlling and directing it to suitable drainage points. Manufactured from high-quality HDPE, the studded profile creates a drainage void that relieves pressure and protects internal finishes.

Unlike barrier systems that attempt to resist water pressure, Type C systems manage water movement in a controlled way, making them suitable for retrofit and new build basement waterproofing projects.

Featured Wykamol Membranes

Wykamol CM20 High Capacity Waterproofing Membrane 40m²

Designed specifically for below-ground floors, CM20 features a deep 20mm stud profile that creates a high-capacity drainage void to manage significant water ingress beneath basement slabs.

Key benefits: enhanced water management, reduced risk of pressure build-up and suitability for high-moisture environments.

Wykamol CM8 Waterproofing Membrane 40m²

A versatile 8mm cavity drain membrane suitable for walls and floors in structural waterproofing systems, allowing controlled drainage to designated evacuation points.

Key benefits: flexible installation, compatibility with dry lining systems and long-term structural protection.

Wykamol CM8 Plaster Mesh Membrane 40m²

This combined membrane and bonded mesh layer provides effective cavity drainage while offering a direct key for plaster or render finishes.

Key benefits: quicker finishing, reduced build-up depth and simplified wall preparation.

Wykamol CM8 Geotextile Membrane 2m x 20m

A twin-layer drainage and protection membrane designed for external waterproofing applications, protecting structures during backfilling.

Key benefits: hydrostatic pressure relief, structural protection and suitability for retaining wall applications.

Complete Waterproofing System Components

Beyond membranes, Wykamol systems include a full range of compatible components to ensure safe and effective installation. These include drainage channels, connectors, corner pieces, sealing tapes, fixing plugs and ancillary accessories designed to integrate seamlessly within a structural waterproofing design.

Together, these products form a coordinated system intended to provide dependable long-term protection in below-ground environments.

UK Manufacturing & Technical Expertise

Wykamol invested significantly in UK membrane extrusion facilities to manufacture cavity drain membranes domestically using modern production technology. This commitment to UK manufacturing supports product consistency, supply reliability and ongoing product development.

The brand is also recognised for its technical expertise within the waterproofing sector, supporting contractors and specifiers with system guidance and best-practice installation principles.

Wykamol and Mapei

In October 2024, Wykamol became part of Mapei UK Ltd, a subsidiary of the global Mapei Group. The acquisition strengthens Wykamol’s waterproofing portfolio through access to international research and manufacturing capability, while maintaining its specialist focus on structural waterproofing within the UK market.

Wykamol Products Available from Permagard

Permagard supplies a range of Wykamol cavity drain membranes, drainage channels and installation accessories suitable for basement waterproofing and structural applications.

Browse the full Wykamol membrane and drainage range or call 0117 982 3282 for technical advice.