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Ponds and Water Features

The use of Drybase cementitious waterproofing products is often associated with civil engineering applications such as reservoir waterproofing. They also provide a cost-effective waterproofing solution for ponds and water features.

Close up on half of a pond water.

How to Waterproof Ponds and Water Features

First, a fillet is formed around the inside perimeter of the pond using Drybase Universal Mortar. Once the Universal Mortar has cured, two coats of Drybase Tanking Slurry are applied to the sides and floor of the pond.

If a tiled finish is required, a 3:1 sand: cement render should be applied over the second coat of Drybase Tanking Slurry whilst it is still green. This will provide a suitable base for tiles to be fixed using a suitable waterproof tile grout.

Drybase Tanking Slurry and Drybase Crystalline Active Tanking Slurry can be used to waterproof a typical concrete pond or water feature.

How to Waterproof Swimming Pools

The Drybase range of cementitious waterproofing products can be used to waterproof swimming pools in much the same way as they are used to waterproof other water-retaining structures. The principal Drybase products used for waterproofing swimming pools are Drybase Tanking Slurry, Drybase Crystalline Active Tanking Slurry, and Drybase Universal Mortar.

Drybase waterproofing products can also be used to waterproof and repair existing swimming pools.

Water Quality

Where fish are to be kept in the pond, it is important to take precautions to ensure that the water quality is suitable for the species of fish to be kept. To this end, advice should be sought from the fish supplier.

In common with all cementitious coatings, Drybase Universal Mortar and Drybase Tanking Slurry will cause the water in the pond to have a high pH (typically between 12 and 13) when first filled. To bring the pH down to a more neutral level, the pond will have to be emptied and filled several times until the correct pH is reached.

Pipe Inlets and Other Types of Pond Construction

Preferably, pipe inlets will be formed in situ during the casting of the concrete and sealed using Drybase Quellmax Plus Waterbar. This replaces Expaseal B Plus.

Drybase products can also be used to waterproof ponds constructed from brick or concrete blocks.

Please contact our technical department on 01403 210204 or submit an enquiry for further details.

Schematic of a pipe system.

Details of other types of water-retaining structures that can be waterproofed using Drybase products can be found on our water-retaining structures page.

Get it Done

A 25 kg bag of Drybase Tanking Slurry.
Drybase BBA Tanking Slurry (25 Kg)Drybase Tanking Slurry is a cementitious, pre-bagged BBA-approved surface waterproofer for horizontal and vertical surfaces.
£59.99
£59.99
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