Sika Sikaflex Pro 3
Sika Sikaflex Pro 3
📋 Product specifications are for reference only.
All product details should refer to the official manufacturer documents. For official product data sheets or technical enquiries, please contact us via WhatsApp.
Sikaflex® PRO-3 is a one-component polyurethane elastic joint sealant from Sika, specifically designed for floor joints and civil engineering applications. Excellent joint movement capability (ASTM C 719), bubble-free curing, paintable, very low emissions (EC1PLUS), cleanroom certified. Suitable for food processing plants, cleanrooms, wastewater treatment facilities, tunnels, and car park floor joints.
Sikaflex PRO-3 Product Features
Sikaflex® PRO-3 is a one-component, moisture-curing polyurethane elastic joint sealant using Sika i-Cure® technology, specifically designed for floor joints and various joint sealing applications in civil engineering. The product provides waterproof sealing with good mechanical properties and chemical resistance, maintaining elasticity under extreme temperatures.
- One-component, moisture-curing, ready to use
- Excellent joint movement capability (ASTM C 719)
- Bubble-free curing — uniform, defect-free sealing
- Paintable — requires full cure first; non-flexible paint systems may crack
- Very low emissions (GEV-Emicode EC1PLUS) — suitable for indoor environments
- Cleanroom certified — suitable for cleanroom environments
- Good mechanical and chemical resistance properties
- Good adhesion to specified construction substrates
- Compliant with LEED v4 EQc 2 low-emission material requirements
Applications
- Floor joints — horizontal and vertical joint sealing for slabs, pedestrian walkways, and traffic areas
- Food processing plants — floor and wall joints in food production facilities
- Cleanrooms — cleanroom material-certified joint sealing
- Wastewater treatment plants — chemical-resistant joint sealing
- Tunnel works — tunnel structural joint sealing
- Car parks — car park floor and ramp joints
- Warehouses and production workshops — industrial floor joint sealing
Why Choose Sikaflex PRO-3
Sikaflex PRO-3 is specifically designed for demanding floor and civil engineering environments, with multiple certifications that standard joint sealants cannot match: cleanroom certification for precision manufacturing, EC1PLUS very low emissions for indoor environments, and chemical-resistant formulation for wastewater treatment facilities. Its movement capability exceeds that of standard construction sealants, handling greater deformation in floor structures. Bubble-free curing ensures a uniform and reliable seal.
Packaging
| Packaging | Volume | Quantity per box |
|---|---|---|
| Cylindrical foil pack | 600 ml | 20 pieces |
Technical Specifications
For detailed technical parameters, please refer to the manufacturer\'s TDS (Technical Data Sheet).
| Item | Description |
|---|---|
| Chemical base | Polyurethane i-Cure® technology |
| Curing method | One-component, moisture-curing |
| Colour | Concrete grey (other colours available to order) |
| Density | See TDS |
| Movement capability | Excellent (ASTM C 719) |
| Hardness | Medium hardness |
| Elongation at break | Very high |
| Elastic recovery | Excellent |
| Tear propagation resistance | Excellent |
| Service temperature range | Wide temperature range |
| Tack-free time | See TDS |
| Tooling time | See TDS |
| Curing rate | Moderate (depends on temperature and humidity) |
| Sag resistance | Very low sag, suitable for vertical application |
| Application temperature | Wide temperature range |
| Shelf life | 15 months (unopened, dry storage) |
Notes
- Paintable, but paint must only be applied after full cure; non-flexible paint systems may crack due to sealant movement — compatibility testing is recommended
- Not suitable for swimming pools or surrounding joints
- Not suitable for asphalt substrates, natural rubber, EPDM rubber, or construction materials that may exude oils, plasticisers, or solvents
- When used on reconstituted or natural stone, test for plasticiser migration first
- Uncured Sikaflex PRO-3 must not contact alcohol-based products
- White and light colours may show discolouration due to chemicals, high temperatures, or UV exposure — this is normal and does not affect performance
Frequently Asked Questions
What is the difference between Sikaflex PRO-3 and standard Sikaflex sealants?
Sikaflex PRO-3 is specifically designed for floor joints and civil engineering, with cleanroom certification and EC1PLUS very low emission certification, making it suitable for demanding environments such as food processing plants and cleanrooms. Its movement capability exceeds that of standard construction sealants (ASTM C 719), better accommodating floor structure deformation.
What substrates can Sikaflex PRO-3 be used on?
Sikaflex PRO-3 has good adhesion to specified construction substrates including concrete, mortar, masonry, tiles, and metal. Testing is required before use on reconstituted or natural stone. Not suitable for asphalt, natural rubber, or EPDM rubber substrates.
How long does Sikaflex PRO-3 take to cure?
Under normal temperature and appropriate relative humidity conditions, the curing rate is moderate. Full curing time depends on joint depth and environmental conditions. For detailed data, please refer to the manufacturer\'s TDS.
Can Sikaflex PRO-3 be painted?
Yes, but paint must only be applied after the sealant has fully cured. Note that non-flexible paint systems may crack due to sealant movement. Compatibility testing in accordance with ISO standards is recommended for best results.
