Delta Terraxx 2.4m x 12.5m

In stock
£249.00 Ex VAT
£298.80 Inc VAT

A geotextile drainage sheet that provides continuous drainage while protecting structures from mechanical damage and impounded water.

Delta Drainage & Protection Membrane

The Delta Terrax is a dimpled drainage and protection membrane for external vertical and horizontal waterproofing applications. It is designed to quickly divert surface water away from the structure, avoiding any build up of water pressure. With a higher drainage capacity than chips and gravel, it vastly improves the drainage of new basement walls and buried roofs. It can also be used for walkable and drivable surfaces.

The membrane is composed of a 9mm dimple sheet with a geotextile layer fused on top. The geotextile filtration layer, in combination with the hollowed spaces of the dimple sheet, allow for superb and long lasting filtration. The 2-ply dimpled membrane sheet also prevents moss growth and frost damage. 

Despite its impressive drainage capacity, this Delta drainage membrane has a low added height - no more than 9mm. Delta Terraxx conforms to both DIN 18531 and DIN 4095.

Delta Terraxx Usages

Delta Terraxx serves as a horizontal and vertical drainage solution for a number of structures, including:

  • Underground parking decks
  • Basement walls
  • Terraces and retaining walls
  • Buried/underground roofs
  • Green roofs

Installing Delta Terraxx dimpled drainage membrane

Delta Terraxx can be laid quickly and simply, straight from its roll. The sheet is installed beneath the wearing course of the parking deck.

Simply roll the sheet loosely on top of the waterproofed surface, with the geotextile layer facing upwards. Each drainage sheet has a self-adhesive strip which allows the product to be overlapped easily. This also prevents the sheets flapping about in windy conditions. 

For horizontal applications, once placed on the surface, apply a layer of sand or chips directly on top. The surface is then ready for cobblestones, wood terrace pavements and flagstones. The Delta Terraxx will allow any water that has seeped through these materials to drain away easily.

Waterproof & Dry – Leading Suppliers of Delta Terraxx Range

As leading suppliers of Delta’s external waterproofing solutions, Waterproof & Dry have all you need to install reliable systems. If you have any questions regarding the Delta Terraxx protection membrane, or any other Delta waterproofing product, then our specialist team is happy to help. Contact us today by calling 0203 947 2972 or sending us an email at [email protected]

Return to Delta Basement Drainage Systems page to browse other products.


  • Reliable protection for external waterproofing systems
  • High capacity dimple drainage sheet
  • Quick and easy to install
  • Suitable for a range of structures
  • Can be applied both horizontally and vertically
  • Geotextile layer prevents soil and particles from slowing the drainage process
More Information
Model DMS 025
Manufacturer Delta Membranes
Packaging Individual unit
Size 2.4m x 12.5m
Coverage 30m² (2.4m x 12.5m)
Colour Grey
Country of Manufacture Germany

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