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Tunnel Waterproofing


Tunnels can vary in size from small service ducts to water pipelines to the large-bore tunnels used for road and rail. Waterproofing methods will vary depending on factors such as the construction method used to build the tunnel, the type of ground through which the tunnel is built, and the level of dryness required inside the tunnel. The Drybase range of cementitious waterproofing products and the Oldroyd range of cavity drainage membranes both have tunnel waterproofing applications. Solutions are also available for the refurbishment of existing tunnels.

A tunnel in construction.

New Build Tunnels and Pipelines

Drybase Tunnel Waterproofing Product Range

Drybase products with tunnel and pipeline waterproofing applications include:

Oldroyd Cavity Drainage Membranes

The Oldroyd Gtx range are cavity drainage membranes with a welded geotextile mesh. They have applications as a drainage layer in cut and cover tunnel construction. Oldroyd Xv 20 (high flow capacity cavity drainage membrane) also has applications in tunnel waterproofing and drainage.

Oldroyd Gtx Range

The Oldroyd Gtx range consists of cavity drainage membranes with a geotextile mesh welded to one side (often referred to as ‘geocomposite membranes’ or ‘geocomposites’). The geotextile mesh filters out the ‘fines’ in the groundwater, preventing them from causing blockages in other areas of the drainage system, making Oldroyd Xv 20 ideal for basement waterproofing and drainage applications

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Drybase Tanking Slurry

Drybase Tanking Slurry is a pre-bagged cementitious waterproofing slurry for application to concrete and masonry walls and floors. It is mixed with water and applied by trowel, brush or spray onto surfaces such as concrete, masonry and render. Once cured, the resultant surface is hydrophobic and is ideal for surfaces that are subject to moisture ingress. Typical areas of application…

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Drybase Crystalline Active Tanking Slurry

Drybase Crystalline Active Tanking Slurry is a high-performance waterproofing slurry specifically designed for direct application to concrete surfaces. The active crystalline composition creates a penetrating waterproofing solution for concrete walls, floors and structures. The high coverage-per-kilogram of Drybase Crystalline Active Tanking Slurry makes it an ideal choice for tanking larger concrete structures.

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Get it Done

Drybase Waterproof Plug (7.5 Kg) A rapid setting cementitious compound to plug holes and stop water ingress. Available in 3 kg, 7.5 kg and 15 kg tubs.
£49.99
Drybase Universal Mortar (25 Kg) A pre-blended high-build cementitious waterproofing and repair mortar for maintaining and renewing indoor and outdoor structures.
£64.99
Drybase Elasticiser (10 Kg) A liquid polymer additive for Drybase Tanking Slurry that adds enhanced elasticity and crack-bridging
£128.52
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