1-part elastic smooth polyurethane floor coating Sikafloor-425 is a 1-part coloured, UV resistant polyurethane resin floor coating. It provides a seamless, waterproof and slip resistant smooth matt finish. It is part of the Sikafloor Monoflex flooring range for decorative or engineered applications - iCure based technology
- Moisture-activated curing
- Good crack-bridging ability
- Fast curing
- Abrasion resistant
- Good adhesion to substrate
- Slip resistant
- Waterproof
- Water vapour permeable
- Resistant to weathering
- High yellowing resistance
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Usage The Product can be used as a: - Waterproof coating on concrete and underneath tiles
Please note: - The Product may only be used by experienced professionals.
Advantages - iCure based technology
- Moisture-activated curing
- Good crack-bridging ability
- Fast curing
- Abrasion resistant
- Good adhesion to substrate
- Slip resistant
- Waterproof
- Water vapour permeable
- Resistant to weathering
- High yellowing resistance
Packaging 6.5 kg (5 L) container 19.5 kg (15.1 L) container Refer to current price list for packaging variations. Colour | Final floor finish colour | RAL 7015 (slate grey), RAL 85 00 (light grey), RAL 9016 (traffic white) |
Applied colours selected from colour charts will be approximate. For colour matching: Apply colour sample and confirm selected colour under real lighting conditions. |
Technical Information Abrasion Resistance | AR0.5 (special) - Accelerated Resistance | (BS 8204-2) |
Tensile Strength | Unreinforced | ~7.5 MPa | | Reinforced | ~17 MPa |
Chemical Resistance Resistant to many chemicals. Contact Sika Technical Services for additional information. Note: Wine, coffee, certain leaves, flower petals and similar organic materials may cause surface discolouration. This will have no effect on the product performance and durability. Use a suitable top coat, such as Sikafloor-418, for improved cleanability and resistance to contamination
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Application Information Layer Thickness Refer to the relevant System Data Sheet Product Temperature | Minimum | +2 °C | | Maximum | +30 °C |
Ambient Air Temperature | Minimum | +2 °C | | Maximum | +30 °C |
Relative Air Humidity | Maximum | 80 % | | Minimum | 35 % |
Dew Point Beware of condensation. The substrate and uncured applied floor material must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product. Low temperatures and high humidity conditions increase the probability of blooming Substrate Temperature | Minimum | +2 °C | | Maximum | +30 °C |
Substrate Moisture Content < 4 % parts by weight (Sika Tramex moisture meter) No rising moisture (ASTM D4263, polyethylene sheet) The substrate must be visibly dry with no standing water. Pot Life As soon as the container is opened, surface film formation will happen within 1–2 hours. High temperatures and high air humidity will accelerate curing significantly. Waiting Time / Overcoating Note: Times are given at 50 % r.h.. Times in brackets are with the use of Sika PU Accelerator. | Substrate temperature | Minimum | Maximum | | +10 °C | ~24 hours (6 hours) | ~14 days (14 days) | | +20 °C | ~16 hours (4 hours) | ~14 days (7 days) | | +30 °C | ~12 hours (2 hours) | ~7 days (7 days) |
Note: Times are approximate and will be affected by changing ambient conditions, particularly temperature and relative humidity. Applied Product Ready for Use Note: Times are given at 50 % r.h.. Times in brackets are with the use of Sika PU Accelerator. | Temperature | Rain resistant | Foot traffic | Full cure | | +10 °C | ~15 hours (2 hours) | ~24–48 hours (4 hours) | ~7–14 days (36 hours) | | +20 °C | ~5 hours (1 hour) | ~24 hours (3 hours) | ~5–9 days (24 hours) | | +30 °C | ~3 hours (30 min) | ~18 hours (2 hours) | ~3–5 days (16 hours) |
Note: Times are approximate and will be affected by changing ambient conditions, particularly temperature and relative humidity. Times are also dependant on layer thickness. |
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.
