PUDLO Geo-Flo is a dual, twin-layered cavity drainage board. The first layer is an 8mm studded membrane which provides drainage capacity. The second layer is a geotextile mat which prevents soil, and other particles, blocking the cavity and/or land drain.

Learn more


  • Relieves hydrostatic pressure on the structure from the surrounding soil
  • Promotes flow of ground water around the structure
  • Protection from root penetration
  • High drainage capacity
  • Protects membrane from puncture and damage during backfilling
  • Suitable for use in all construction types
  • Acts as barrier against radon and methane
  • Can be used to provide vertical ventilation of Radon against retaining walls in accordance with BRE211


  • PUDLO Geo-Flo is designed to manipulate groundwater towards the land drain, reducing pressure on the structure whilst also helping to protect externally applied membranes from being damaged during backfilling.
  • Waterproofing above ground level image

    Waterproofing above ground level

  • Waterproofing at below ground level image

    Waterproofing at below ground level

  • Gas proofing image

    Gas proofing

Related Products

  • PUDLO CD Plug

Want to specify this pudlo product?

You can now add us to your NBS product specification using the button below:

PUDLO projects

Upton Gardens, London

For over 100 years the Boleyn Ground at Upton Park was home to West Ham United FC. When the club moved to the newer, larger London Stadium a few miles away in...

View project

Dubai Fountains, UAE

When Emaar Properties unveiled the Dubai Fountains, it had created yet another visually dynamic feat of engineering to enrich Dubai’s iconic landscape. The...

View project

Vauxhall Tunnel, London

PUDLO was required on this project to assist in the construction of a tunnel beneath Vauxhall bridge. The difficulty here, creating a waterproof solution to...

View project