Tanking slurry. Type-A waterproofing for masonry.

Price excl. VAT
Price incl. VAT
(67 items in stock)

Wykamol Tanking Slurry is a 20 kg blend of Portland cement, graded sands and polymers. It comes in its own mixing bucket. The powder mixes with water to form a slurry-like paste. Use it with a stiff brush to tank cellars and basements. The slurry forms a watertight barrier by blocking masonry pores. Once set, it prevents water from seeping through porous masonry. 

Where is Tanking Slurry used?

Use Wykamol Tanking Slurry to coat internal brick, block or stone walls. The slurry is ideal for waterproofing basements as it resists water pressure. You can also use it above ground to stop damp penetration.

How to Tank the Walls in a Basement.

The wall must be ready to accept the treatment. Ensure the walls have flush surfaces and are free of paint and dirt. Dampen the walls before applying the first slurry coat.

Blend the 20 kg powder with 3.2 to 4 litres of clean water. Work the slurry undercoat into the masonry surface using a stiff brush. When it's dry, brush on a second coat at right angles to the first. Top with our renovation plaster to protect the tanking. See the data-sheet for full basement tanking guidance.

Does the Tanking Slurry have BBA Approval? 

Yes! The British Board of Agrément certifies Wykamol Tanking Slurry. The cementitious tanking complies with BS 8102. It offers Type-A barrier protection for below-ground structures.

Delivery options are only available for delivery to mainland UK (excluding Scottish Highlands, Scottish Islands, Channel Islands, Isle Of Man Northern Ireland and Eire). Delivery to Scottish Highlands, Scottish Islands, Channel Islands, Isle Of Man, Northern Ireland and Eire are limited to 20kg and are available at a Premium rate. Please contact us on or via our help line if delivery is required outside these areas. Alternatively select ‘World-wide Delivery’ and a member of our sales staff will contact you regarding your options and costs.


We offer for the mainland UK , as standard, a FREE delivery service on all orders having a value greater than £200.00 (excluding VAT). For orders having a value less than £200.00 (excluding VAT) a carriage fee of £8.50 + VAT will be levied. Goods will be sent by a national carrier on their 1-2 working day standard service. Customers must understand that delays can always happen while their order is with the courier, for this reason we can not guarantee your order will be with you next day.

It is important that the customer ensures that all the delivery details are correct and that the customer or someone acting for the customer is able to sign for the delivery. Twistfix accept no liability for failed deliveries as a result of incorrect delivery details or the absence of any authorised signatory. Twistfix will attempt delivery to the recipient between the hours of between 8am and 6pm. If no one is available to receive the delivery an attempt may be made to leave the item with a neighbour. Alternatively the carrier may return the item to the sorting office and leave a calling card at the recipient's address to advise of the attempted delivery. It is the responsibility of the customer to arrange to collect the item from the depot or to arrange re-delivery with the carrier. Further information regarding Delivery can be read at our Terms & Conditions.


Items returned and received in their original condition and packaging within 14 days of delivery will be accepted for exchange or refund subject to a 20% restocking fee. You will be responsible for the shipping costs incurred in returning the goods and should ensure the items are adequately insured while in transit to us. You should email to request to return items.

Where the goods are being returned because they are faulty or are not the goods that were ordered then, subject to the goods being returned in re-saleable condition, Twistfix will refund the cost of return shipping. Further information regarding Returns can be read at our Terms & Conditions.