• Sika Damp-proofing Slurry

Sika Damp-proofing Slurry


Sika Damp-proofing Slurry is a 1-component damp proofing and waterproofing mortar for the damp-proofing of underground buildings or waterproof lining of water sources.

Features and Benefits

  • Easy to use and apply
  • BBA approved
  • Just add water
  • Brush, trowel or spray applied
  • Fast mixing
  • Good adhesion
  • Excellent workability
  • Protects against water penetration
  • Non-toxic

£42.82(ex. VAT)
£51.38 (inc. VAT)
Please choose your colour
Available for Delivery (See Delivery Options Below)


Sika Damp-proofing Slurry is a one part polymer modified cement based waterproof coating comprising of special cement based components and admixtures. When mixed with water a slurry or mortar material is produced for direct application to a variety of construction substrates.

Recommended Uses

  • Waterproof coating for domestic tanking basements
  • Thin layer mortar or slurry coating/lining
  • Waterproofing/damp-proofing basement and cellar walls and floors
  • Damp-proofing interior/exterior basement walls in new buildings
  • Water proofing interior/exterior concrete, renders, brickwork and blockwork structures
  • Lining of water tanks, pools, planters etc

Further benefits

  • Low odour compared to bitumen coatings
  • Consistency can be varied to suit application method
  • Protects against water penetration
  • Conforms to BS 8102:1990 as a polymer-cement based waterproof coating for Type A shallow basement structures – Grades 1, 2 and 3

For further information and application information please download the product data sheet below.

Product Details

Data sheet

Interior / Exterior Use
Interior and Exterior
Water / Solvent Based
For Use On
Concrete, Brickwork
Application Method
Brush, Trowel, Spray
Standard / Ready Mixed
Single, Two or Three Pack
Product Certifications
EN 1504-2: 2004
Pack Size
2.1kg per m² per mm
Touch Dry
6 Hours

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

questions jez thorpe on 2021-09-06 13:50:34

Once 2 coats of Skia Slurry are applied to a basement wall, how would you finish? Is it suitable to be painted over or would you need to frame out and plasterboard the wall?

Answer from Rawlins’ Technical Team: 

After application plaster board and or timber battens can be bonded to the wall, or finishing plaster applied.

It is not recommended to use gypsum based plasters.

questions Luke Thomas  on 2021-04-22 08:15:46

Hi, can this be used externally on a stone wall below ground level? Can a layer of blackjack be used over as an extra measure?

Answer from Rawlins’ Technical Team: 

Thank you for the enquiry, we have contacted you directly for more information to assist you further.

questions Che Watson on 2019-11-28 15:47:01

Would this be suitable for a cellar with sandstone walls?

Answer from Rawlins’ Technical Team: 

As long as the walls are of sufficient strength then this should be ok.

At the time of writing the data sheet states;


The substrate must be structurally sound and free of all traces of contaminants, loose and friable particles, cement laitance, oils and grease etc. The concrete “pull off” (tensile adhesive) strength must be > 1.0 N/mm2.

questions SR Suner on 2018-07-28 03:54:39

Looking to identify the particular damp proofing powder by Sika that gave a light reddish brown hue following application: What would it be called, could you let me know the product name? Many thanks.

Answer from Rawlins’ Technical Team: 

To our knowledge Sika have nothing in their range which is reddish brown and a damp proof slurry.

They have;

The only other thing that may have been used would be a red/brown sharp sand with Portland cement mixed with Sika 1 Waterproofer Liquid Admixture that will be reddish brown but that will be site batched and not a pre-bagged product.

questions Micheal on 2018-04-04 12:31:24

Is it strong enough to be used on garden shed floor that has no dpm to stop damp and take weight of tractor lawnmower?

Answer from Rawlins’ Technical Team: 

Although Sika Damp-proofing Slurry can be used on the shed floor to stop damp rising through the slab, we would recommend a protective screed on top, as the Sika Damp-proofing Slurry is a thin coating (2-4mm) that could be damaged if heavy machinery (lawnmowers, etc) are thrown on top. For the protective screed we would recommend SikaScreed HardTop 60 is used at 8mm thickness.

questions robin wright building & joinery services on 2016-10-10 10:46:11
Question: Can a plasterboard adhesive be used on this product after it has cured to allow it to be boarded and skimmed.
Answer from Rawlins’ Technical Team: 

Yes, as long as it is non-gypsum based.


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Sika Damp-proofing Slurry is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

All delivery costs below are excluding VAT