Two component, fast-reactive, highly flexible PMMA based waterproofing resin for use on details Sikalastic Rapid-721 Thixo is a seamless, crack-bridging and joint-bridging waterproofing membrane that is able to withstand mechanical stresses. It
contains a highly flexible and fleece-reinforced waterproofing layer as well as abrasion-resistant system layers for foot traffic. The waterproofing system's liquid application and high bonding strength on almost any substrate also allow breakthroughs and upstands to be integrated securely and seamlessly. - Cold applied
- Fast-curing
- Highly flexible and crack--bridging even at extreme sub-zero temperatures
- Permanently weather--resistant (UV, hydrolysis and alkali resistant)
- Fully bonded to the substrate, therefore no flow paths for water under the membrane
- Easy and fast application
- Can also be applied at sub-zero temperatures
- Solvent-free
- Seamless membrane
- Minimal disruption and low maintenance
- Elastic properties – tolerant of thermal movement
- Flexible, impact resistant membrane
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Usage - Water-proofing of communal walkways, flat roof structures, podium decks and terrace roofs
- For new construction and refurbishment projects
- Applicable to existing concrete, asphalt, roofing felt, brickwork (subject to condition and priming requirements)
Advantages - Cold applied
- Fast-curing
- Highly flexible and crack--bridging even at extreme sub-zero temperatures
- Permanently weather--resistant (UV, hydrolysis and alkali resistant)
- Fully bonded to the substrate, therefore no flow paths for water under the membrane
- Easy and fast application
- Can also be applied at sub-zero temperatures
- Solvent-free
- Seamless membrane
- Minimal disruption and low maintenance
- Elastic properties – tolerant of thermal movement
- Flexible, impact resistant membrane
Packaging | Sikalastic Rapid-721 Thixo | 10 Kg | | Sikalastic Rapid Catalyst | 0.2 Kg | | Total | 10.20 Kg |
Colour Pigmented liquid RAL 7043 (Dark Grey) |
Application Information Ambient Air Temperature -5 °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 Pot Life The material in opened containers should be applied immediately
At 20°C, 2% catalyst the pot life is approximately 15 minutes Applied Product Ready for Use | Temperature | Catalyst | Rain resistant | Can be
trafficked/
overcoated | Full cure | | 20°C | 2% | 30 minutes | 1 hour | 3 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) | +3 | 5 | 10 | 15 | 20 | | 4% | 4% | 4% | 2% | 2% | | 25 | 30 | 35 | 40 | 50 | | 2% | 2% | 2% | 1% | 1% |
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 |
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.
