• 1-3 Days Delivery
  • Low Trade Prices
  • Free Technical Advice

PermaSEAL Tanking Slurry White 20kg Bucket

100% of 100
£32.00 Ex VAT
£38.40 Inc VAT

Designed for waterproofing basements, tanks and ducts, blocking water ingress both internally and externally on concrete, brickwork and blockwork.

White Tanking Slurry

PermaSEAL Tanking Slurry is a single pack cement-based coating, consisting of Portland Cements, blended and formulated with quality graded aggregates and chemical modifiers. It is ideal for tanking cellars and basements, keeping them dry by effectively blocking water ingress. Our White Tanking Slurry is easy to use - you can apply it directly onto damp substrates with a brush. 

In addition, PermaSEAL Tanking Slurry contains an acrylic polymer that imparts improved strength, bonding and abrasion resistance. After hardening, PermaSEAL tanking becomes a vapour permeable and watertight coating capable of withstanding water pressure.

Tanking Slurry Uses

PermaSEAL Tanking Slurry in white can be used in the following situations:

  • Tanking of basements and cellars
  • Above ground damp proofing
  • Sealing of tanks and ducts
  • Internal and external waterproofing
  • Lining of storage tanks for potable water
  • Coating of brick and block work structures 

Using Tanking Slurry

PermaSEAL cementitious tanking is mixed with water on site and applied directly to the surface by brush. It is safe to apply on damp substrates. It is specially formulated to enable excellent adhesion to construction surfaces.

Our tanking slurry is available in two colours, white and grey. As a general guide, use one colour for the first coat then the other for the second coat which makes it easier to see if you have completely covered the surface.

Once tanking is complete…

PermaSEAL Tanking should always be covered by a minimum of a 10mm coat of 4:1 sand and cement render, a 1:1:6 Lime based render or PermaSEAL Renovating Plaster. After this render coat has been applied, dot and dab plaster board, multi finish or a breathable paint can be applied.

Note: all tanking products are prone to sweating during the drying out phase and if left exposed after the product has cured. We suggest they are always covered as above and/or adequate ventilation is installed to manage the humidity.

PermaSEAL - Complete Solutions. Made Possible.

Permagard offer a range of high quality tanking products to meet your precise needs - everything from cementitious tanking to fillet seal to crystalline tanking slurry. If you need advice on choosing the right tanking product or basement waterproofing system contact our expert team.

For more information, read our guide on tanking a cellar, how to tank a wall or waterproofing a garage with tanking slurry.


  • Excellent adhesion to prepared surfaces
  • White tanking slurry to differentiate coats
  • Easy to apply by brush or spray
  • Microporous (fully breathable)
  • Can be pressure cleaned
  • Durable

Tanking Slurry in a Flood Resistance System

PermaSEAL Tanking is part of our flood resistance range. It can be used internally up to 600mm on the walls and across the floor to hold back flood water until it subsides, as part of a wider flood protection system.

Other Products You May Be Interested In