Two component, fast-reactive primer for absorbent substrates Sikalastic® Rapid Cementitious Primer is a rapid curing primer, consisting of two components. To be used on absorbent substrates as a barrier for the later application of Sikalastic® Rapid waterproofing or surfacing products. - Very good adhesion on absorbent substrates
- Fast-curing
- Hydrolysis and alkali resistant
- Easy and fast application
- Solvent-free
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Usage - Used for the pre-treatment (primer and barrier coat) of slightly absorbent mineral and timber surfaces such as concrete, screed, cementitious renders, wood.
- For new construction and refurbishment projects
Advantages - Very good adhesion on absorbent substrates
- Fast-curing
- Hydrolysis and alkali resistant
- Easy and fast application
- Solvent-free
Packaging | SUMMER | | | Sikalastic® Rapid Cementitious Primer | 10.00kg | | Sikalastic® Rapid Catalyst | 0.30kg (3 x 0.1kg) | | Total | 10.30kg |
| WINTER | | | Sikalastic® Rapid Cementitious Primer | 10.00kg | | Sikalastic® Rapid Catalyst | 0.60kg (6 x 0.1kg) | | Total | 10.60kg |
Colour Pigmented liquid - white |
Application Information Ambient Air Temperature +3°C min / +35°C max Relative Air Humidity The relative humidity must be ≤90% Dew Point Beware of condensation. Surface temperature during application and cure must be a minimum of 3°C above dew point. The substrate temperature must not be less than +3°C if a topping is applied to the surface. Reaction problems can occur at lower temperatures. Substrate Temperature +3°C min / +50°C max Substrate Moisture Content The surface to be coated must be dry and ice-free.
The surface must be protected from moisture until the coating has hardened. Substrates such as new concrete containing residual moisture can be coated provided they have set sufficiently and the substrate is properly prepared. Pot Life The material in opened containers should be applied immediately. At 20°C, 3% catalyst the pot life is approximately 10 minutes Curing Time | Temperature | Catalyst | Rain resistant | Can be trafficked/overcoated | Full cure | | 20°C | 3% | 30 minutes | 30 minutes | 2 hours |
Note: Times are approximate and will be affected by changing ambient conditions. Higher temperatures or greater proportions of Sikalastic® Rapid Catalyst will reduce reaction times, while lower temperatures and smaller proportions of Catalyst will increase reaction times. The following table indicates the recommended amount of Sikalastic® Rapid Catalyst required to adjust the curing reaction to the temperature. Substrate temperature in °C; required amounts of Sikalastic® Rapid Catalyst in % w/w (guide) | -10 | -5 | +3 | 5 | 10 | | - | - | 6% | 6% | 4% |
| 15 | 20 | 25 | 30 | 35 | | 4% | 2% | 2% | 2% | 2% |
Return-to-service times are provided as a guide only and may vary as a result of conditions. Newly installed balconies should be protected from exposure to heavy traffic by overlaying with an appropriate protective covering. This is particularly critical where early access is needed by other construction related traffic. Sika Liquid Plastics will not be held responsible for damage to balcony surfaces that results from failures to adequately protect newly laid areas. For further advice, consult Sika Liquid Plastics Technical Customer Services Waiting Time / Overcoating Once the primer has hardened, apply a second layer and top with a little quartz sand (0.1-0.2 kg/m² at 0.2mm – 0.6mm) while the primer is still wet. The sand topping creates the necessary key (roughness) for application of the mortar. Never apply the topping to the first coat of primer. |
The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
