SEALANT FOR CONCRETE AND MASONRY FACADES Sikaflex Construction+ is a 1-component, moisture-curing, elastic joint sealant. - Very good resistance to weathering.
- Movement capability of ± 35 (ASTM C 719).
- Bubble-free curing.
- Good workability.
- Good adhesion to many substrates.
- Solvent-free.
- Very low emissions.
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Usage Sikaflex Construction+ is designed for movement and connection joints in concrete facades. Advantages - Very good resistance to weathering.
- Movement capability of ± 35 (ASTM C 719).
- Bubble-free curing.
- Good workability.
- Good adhesion to many substrates.
- Solvent-free.
- Very low emissions.
Packaging 600 ml foil pack, 20 foil packs per box
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Technical Information Shore A Hardness | ~28 (after 28 days) | (ISO 868) |
Secant Tensile Modulus | ~0.45 N/mm2 at 100 % elongation (+23 °C) | (ISO 8339) | | ~1.10 N/mm2 at 100 % elongation (−20 °C) | |
Movement Capability | ± 25 % | (ISO 9047) | | ± 35 % | (ASTM C 719) |
Tear Propagation Resistance
Service Temperature −40 °C to +70 °C
Joint Design The joint width must be a minimum of 6 mm and a maximum of 50 mm. A width to depth ratio of 2:1 must be maintained. Joint widths less than 10 mm are generally for interior connection joints or crack control joints and therefore considered as non-movement joints. Example of typical joint widths for joints between concrete elements for exterior applications if the joint sealant is classified as ±25 % movement capability according to ISO 9047, calculation according to DIN 18540:
| 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 |
Example of typical joint widths for joints between concrete elements for exterior applications if the joint sealant is classified as ±35 % movement capability according to ASTM C 719, Calculation according to ASTM C 1472-10: | Joint distance [m] | Min. joint width [mm] | Min. joint depth [mm] | | 2 | 10 | 10 | | 4 | 15 | 10 | | 6 | 15 | 10 | | 8 | 25 | 12 | | 10 | 30 | 15 |
All joints must be correctly designed and dimensioned in accordance with the relevant standards and codes of practice before their construction. The basis for calculation of the necessary joint widths are:
▪ The type of structure
▪ Dimensions
▪ Technical values of the adjacent building materials
▪ Joint sealing material
▪ The specific exposure of the building and the joints
For joint design and calculations contact Sika Technical Services for additional information.
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Application Information Sag Flow 0 mm (20 mm profile, 50 °C) | (ISO 7390) |
Ambient Air Temperature +5 °C to +40 °C, min. 3 °C above dew point temperature Substrate Temperature +5 °C to +40 °C Backing Material Use closed cell, polyethylene foam backing rods. Curing Rate | ~3 mm/24 hours (23 °C / 50 % r.h.) | (CQP 049-2) |
Skin Time | ~65 minutes (23 °C / 50 % r.h.) | (CQP 019-1) |
Tooling Time | ~55 minutes (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.
