About Sika SikaLatex Super

SikaLatex Super is Sika’s higher-performance grade of SBR latex, formulated with a greater polymer solids content than standard SikaLatex SBR. In practice that means a site crew can take plain cement, sand and this white emulsion and produce a bonding slurry, a waterproof coat or a modified repair mortar that behaves far closer to a factory-blended polymer mortar than a straight sand-cement mix ever could. It is fully water-soluble and is added directly to the gauging water, so there is no separate priming step and no specialist plant on site — a definite advantage on repair and rehabilitation jobs where access and logistics are tight.

For engineers and contractors across Delhi NCR and the wider Indian market, the appeal is repeatability. The same drum covers three different trades — bonding, waterproofing and mortar modification — which simplifies procurement and reduces the number of part-used products left on a site. Because the polymer film is alkali-stable and does not re-emulsify once cured, coatings and screeds made with it hold up in the damp, high-alkalinity environment of green concrete and sunken slabs. Space Arc Engineering supplies SikaLatex Super as an authorised Sika channel partner, with technical back-up on dosage and detailing for the specific substrate you are working on.

The technical insight

The performance comes from the polymer film that forms as the SBR emulsion dries. When the latex is blended into a cementitious mix, the styrene-butadiene particles coalesce during curing into a continuous, flexible film that laces through the hardened cement matrix. That film does two jobs at once. First, it grips both the old substrate and the fresh cement, which is why pull-off and flexural bond figures climb sharply over an unmodified mix — the interface is no longer relying on mechanical key and cement hydration alone. Second, the same film plugs and blocks the fine capillary pore network that water normally travels through, so permeability drops and the coating resists both liquid water and the leaching and efflorescence (saltpetre) that plague untreated renders. Because the cured polymer is elastic rather than brittle, the modified layer can accommodate the small movements and drying-shrinkage strains that would otherwise open hairline cracks in a rigid sand-cement coat. The higher solids loading in the Super grade simply means more polymer per litre, so these effects — adhesion, crack-bridging and water tightness — are more pronounced than with the base SBR grade at the same dosage.

Where it is used

• Bonding coat between hardened old concrete and fresh concrete, screeds or repair mortar
• Waterproof cementitious coating for roof slabs, sunken slabs, water tanks and retaining walls
• Polymer-modified repair mortar for patch repairs to spalled or damaged concrete
• Waterproof plastering and rendering to arrest damp on internal and external walls
• Gauging admixture for masonry mortars, screeds and floor levelling layers
• Tile-fixing and panelling slurries needing higher bond and flexibility
• Treatment against leaching, dampness and saltpetre (efflorescence) action
• Bonding slurry ahead of grouting, jointing and general concrete rehabilitation work

Key advantages

• Higher polymer solids than standard SikaLatex SBR, so more adhesion and water resistance per coat
• Raises flexural, tensile and pull-off bond strength of the modified mortar or slurry
• Cuts water permeability and improves resistance to leaching and efflorescence
• Flexible cured film bridges hairline shrinkage cracks instead of going brittle
• One product covers bonding, waterproofing and mortar modification, simplifying procurement
• Fully water-soluble and added to the gauging water — no separate primer or special plant
• Alkali-stable film does not re-emulsify in the high-pH environment of green concrete
• Improves abrasion and chemical resistance while remaining non-toxic and non-flammable

Limitations & considerations

• Not a standalone membrane — it must always be mixed with cement and sand, never brushed on neat as a bonding coat
• Cementitious system, so it is not a substitute for a liquid-applied or sheet membrane on heavy hydrostatic or trafficked-deck waterproofing
• Performance depends on correct on-site dosage and mixing discipline; over-dilution weakens the polymer effect
• Bonding slurry must be over-coated wet-on-wet within its open time or the bond benefit is lost
• Being cement-based, the finished layer still needs proper moist curing to develop full strength
• Shelf life is limited and stock must be protected from frost and excessive heat

Selection & best practice

Specifications

Industry use cases

How we position Sika SikaLatex Super

Within the Sika range, SikaLatex Super sits a step above the standard SikaLatex SBR — choose the base SBR grade for routine bonding and general-purpose modification, and step up to Super where you want maximum adhesion and water tightness from the same litre. For fully engineered concrete repairs, pair it with a Sika MonoTop repair mortar; for tanks and basements demanding a true membrane, back it up with a Sikalastic or Sikatop waterproofing coating rather than relying on the latex coat alone. Where a client’s specification is written around a different brand, Space Arc also supplies genuine SBR equivalents from our other principals — notably Fosroc Nitobond SBR and Dr. Fixit Pidicrete URP — so the same bonding and waterproofing detail can be met whatever the approved-vendor list requires.

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