| Sikasil-670 Fire is a fire rated, 1-component, moisture-curing, low-modulus elastic joint sealant. - Up to 4 hours fire resistance according to EN 1366-4.
- Very good resistance to weathering.
- Movement capability of ± 35 % (ASTM C 719).
- Easy to smooth and very good workability.
- Good adhesion to many different substrates.
- Neutral curing.
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Usage Sikasil-670 Fire is designed for fire rated movement and connection joints on porous and non-porous substrates. Advantages - Up to 4 hours fire resistance according to EN 1366-4.
- Very good resistance to weathering.
- Movement capability of ± 35 % (ASTM C 719).
- Easy to smooth and very good workability.
- Good adhesion to many different substrates.
- Neutral curing.
Packaging 600 ml foil pack, 12 foil packs per box. 380 ml cartridge, 25 cartridges per box. 300 ml cartridge, 12 cartridges per box. Colour White, grey, black |
Technical Information Shore A Hardness | ~20 (after 28 d) | (ISO 868) |
Secant Tensile Modulus | ~0.30 N/mm2 at 100 % elongation (23 °C) | (ISO 8339) | | ~0.50 N/mm2 at 100 % elongation (−20 °C) | |
Tear Propagation Resistance
Movement Capability | ± 25 % | (ISO 9047) | | ± 35 % | (ASTM C 719) |
Service Temperature −40 °C min. / +150 °C max.
Joint Design The joint width must be designed to suit the joint movement required and the movement capability of the sealant. The joint width shall be ≥ 10 mm and ≤ 40 mm. The joint depth shall be ≤ 20 mm. A width to depth ratio of 2:1 should be maintained (for exceptions, see table below).
Standard joint widths for joints between concrete elements: | Joint distance [m] | Min. joint width [mm] | Min. joint depth [mm] | | 2 | 10 | 10 | | 4 | 15 | 10 | | 6 | 20 | 10 | | 8 | 30 | 15 | | 10 | 35 | 17 |
All joints must be correctly designed and dimensioned in accordance with the relevant standards, before their construction. The basis for calculation of the necessary joint widths are the type of structure and its dimensions, the technical values of the adjacent building materials and the joint sealing material, as well as the specific exposure of the building and the joints.
For larger joints please contact our Sika Technical Service.
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Application Information Backing Material Use polyethylene foam backing rods. Sag Flow | ~2 mm (20 mm profile, 50 °C) | (ISO 7390) |
Ambient Air Temperature +5 °C min. / +40 °C max. Substrate Temperature +5 °C min. / +40 °C max., min. 3 °C above dew point temperature Curing Rate | ~2 mm/24 hours (23 °C / 50 % r.h.) | (CQP 049-2) |
Skin Time | ~25 min (23 °C / 50 % r.h.) | (CQP 019-1) |
Tooling Time | ~20 min (23 °C / 50 % r.h.) | (CQP 019-2) |
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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.
