Drybase Tanking Slurry
|Standards & Accreditations|
BS EN 1504-2
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 include:
- Basement / cellar waterproofing and refurbishment
- Underground car parks
- Retaining walls
- Lift pits
- Tanks / reservoirs / water treatment works
- Fish ponds & water features
- Above-ground walls
Reliable Waterproof Tanking
Manufactured using sophisticated production processes, Drybase Tanking Slurry is composed of cement, quartz with graded grain-size distribution and special chemical ingredients of inorganic nature. Drybase Tanking Slurry has been tested for water resistance up to a 6 meter head of water and can be employed against both active and passive water pressure. It is also approved for use in contact with potable water.
The BBA-approved Drybase Tanking Slurry has been used in projects both large and small all over the country. Whether being used to tank a single above-ground damp wall in a domestic property or as part of a specification in a large underground commercial basement, Drybase Tanking Slurry will provide consistent high-performance waterproofing.
Easy and Versatile Application
Drybase Tanking Slurry has excellent bonding qualities from the initial mix right through to the final application. The excellent adhesion makes it suitable for application to both horizontal and vertical surfaces. The cured surface is also very durable, being resistant to both frost and heat whilst still remaining vapour-permeable.
Drybase Tanking Slurry is fully compatible with the full range of Dryzone Renovation Plasters for achieving an attractive and breathable final finish.
Drybase Tanking Slurry Application
 For more details of structural defects that must be repaired prior to Drybase Tanking Slurry application, refer to the Drybase Tanking Slurry technical datasheet, which can be downloaded in PDF format from the downloads tab at the top of this page.
|Minimum layer thickness per layer||1.5 mm|
|Maximum layer thickness per layer||2.0 mm|
|Maximum layer thickness in total||5.0 mm|
Do not apply Drybase Tanking Slurry at temperatures below 5°C (40°F) or to a frozen substrate.
 The waiting time before applying the second layer is approximately 2 – 4 hours, depending on local climatic conditions such as humidity, temperature, etc. The first layer must not be damaged during application of the second layer.
 The nozzle must be held at a 90° angle to the substrate being treated and the distance between the nozzle and the surface will vary depending on the spray gun / compressed air used.
For maximum effectiveness, it is essential that the applied layers of Drybase Tanking Slurry are kept damp for at least 5 days and protected against evaporation by sun and wind. Careful post-watering should be carried out at intervals, starting from the day following the application. Alternatively, the surfaces can be covered with plastic sheeting, wet mats or moist sand. The use of curing compounds is not recommended.
The freshly treated surfaces should be protected from rain for a minimum period of 24 hours. Surfaces treated with Drybase Tanking Slurry should be protected from frost for at least 5 days. If necessary, cover them with insulation mats.
Detailed application instructions can be found in the Drybase Tanking Slurry application guidelines, which can be downloaded from the downloads tab at the top of this page.