Advanced Cornish Made Building Chemicals
Technical Support
+44 1872 879011
KA Tanking Slurry
Grey & White
Crystalline waterproofing slurry with radon resistance, WRAS potable water approved.
for masonry, blockwork, basements & potable water tanks.
Application List
A comprehensive list of environments, structures and use-cases where KA Tanking Slurry™ is suitable:
Domestic & Residential Waterproofing
- Basements
- Cellars
- Utility rooms
- Wet rooms
- Shower areas
- Laundry rooms
- Outbuildings
- Garages
- Garden rooms
- Damp masonry prior to plastering
- Floors prior to levelling compound
- Under-tile waterproofing on concrete substrates
Structural & Below-Ground Waterproofing
- Retaining walls
- Lift shafts / lift pits
- Foundations
- Raft slabs
- Concrete walls below ground level
- Underground service rooms
- Plant rooms
- Pump rooms
- Sumps and drainage chambers
- Tunnel walls
- Underpasses
- Culverts
- Concrete bunds
- Water-bearing blockwork
- Negative-pressure waterproofing
- Positive-pressure waterproofing
Commercial & Industrial Applications
- Warehouse foundations
- Industrial basements
- Service ducts
- Utility tunnels
- Water treatment facilities
- Concrete tanks
- Silos and containment structures
- Commercial plant pits
- Underground storage areas
- Car park retaining walls
- Lift motor rooms
- Concrete bunds for storage
Water-Holding Structures
- Garden ponds, concrete or rendered
- Koi ponds
- Wildlife ponds
- Water features
- Fountains
- Ornamental pools
- Concrete fish tanks
- Water troughs
- Irrigation tanks
- Agricultural water storage
- Livestock drinking tanks
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Permanent crystalline waterproofing
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Stops water ingress on positive & negative pressure
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Ideal for basements, lift pits, retaining walls, cellars
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Safe for drinking water tanks
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Compatible with KA Fillet Seal & KA Super Plug
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Tested to BS 6920, BS 3921, BS EN 12390‑8
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Radon‑resistant barrier
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Easy brush application
Swimming Pool & Leisure Applications
Application Sequence
Substrate: Strip all prior coatings, wash the area, and maintain a saturated surface.
Blending: Combine powder and water at a 3:1 ratio, mixing until the liquid is uniform.
Primary Coat: Use a brush to apply the slurry directly onto the pre-moistened substrate.
Secondary Coat: Once the first pass is firm, brush on the second layer at right angles.
Yield: A single unit covers approximately 8m² when applying the two-coat system.
Setting: Maintain controlled drying.
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Pack Size: 25kg
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Colours: Grey / White
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Coverage: 8m² per tub (two coats)
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Mix Ratio: 3:1 (Powder : Water)
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Application: Brush / Spray
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Substrate: Dampened masonry
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Pressure Rating: Exceeds 7 bar (BS EN 12390‑8)
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Potable Water: WRAS Listed
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Certifications: UKAS, WRAS, UKCA
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Made in: United Kingdom
- Swimming pool shells before tiling
- Spa pools
- Hydrotherapy pools
- Plunge pools
- Commercial pool basements
- Balance tanks
- Pool plant rooms
- Poolside retaining walls
Potable-Water & Hygienic Applications
- Drinking-water tanks
- Potable-water storage chambers
- Food-safe water reservoirs
- Water purification plant structures
- Clean-water sumps
- Water cisterns
- Concrete water channels
WRAS BS 6920:2002 approved.
Gas-Tight & Radon-Resistant Applications
- Radon-resistant waterproofing layers
- Below-ground rooms in radon zones
- Radon-mitigation coatings on concrete
- Gas-tight sealing of blockwork
- Sub-slab radon protection systems
Remedial & Repair Applications
- Damp walls
- Leaking masonry
- Failed waterproofing systems
- Old tanking systems needing replacement
- Crystalline upgrade layer
- Waterproofing prior to plastering or rendering
- Waterproofing prior to tiling
- Waterproofing prior to painting
External & Environmental Applications
- Retaining walls exposed to soil moisture
- Earth-retaining garden structures
- Concrete planters
- Water-exposed masonry
- External concrete walls
- Below-ground garden structures
- Heavy rainfall exposure waterproofing
Civil Engineering & Infrastructure
- Tunnels
- Underpasses
- Culverts
- Drainage channels
- Water management structures
- Concrete chambers
Technical Benefits
- Permanent Crystalline Waterproofing
- Resists High Hydrostatic Pressure
- Breathable & Non-Toxic Formula
- Self-healing active chemicals
Compliance
Substrates
- Concrete & Pre-cast Units
- Dense Concrete Blocks
- Brickwork & Stone Masonry
- Screeds & Renders
Preparation
- Consult our technical guide for essential surface treatment protocols before application.
Application
- Refer to our installation documents for step-by-step instructions.
- Review equipment checklists to ensure professional-grade results.
Expert Support
Merchants, installers, and specifiers – please get in touch for technical support, full safety datasheets, or stocking enquiries. Our Cornwall-based team provides expert advice for Demanding site conditions.
Technical Line: +44 (0)1872 879011
Enquiries: technical@kaproducts.co.uk