A joint occurs where two components meet and may occur within an element of construction or at part of an interface between two elements. Joint sealing facilitates construction, as a number of components made of different materials are used. Joints allow for needed movement of the materials but must remain water, air, heat, cold and vapor tight.
The building blocks of your construction - like the concrete slab, the glass facade element, the roofing membrane, the metal cover - generally do not let water, moisture or air enter the building or structure. It is at the joints where a building is weakest to leakage. Only correctly specified and professionally applied high-quality joint sealants will manage to keep your building or structure sustainably tight during its entire lifespan.
Sika has a long history in joint sealants, from building envelopes to interiors to below-ground structures and all kinds of waterproof joints. All Sika products are the fruit of many years of experience, outstanding research and development capabilities, continuous adaptation and improvement to modern construction materials and practices and state of the art production sites.
Sika Solutions for Joints:
- Sika’s sealants show good adhesion to a wide range of materials including concrete, masonry, painted wood, coated or galvanized aluminum, steel or PVC. This is namely important for window, door and other installations.
- Sealants are applied to the facade and also inside the building, where volatile organic compounds (VOCs) and other sealant components like phthalates, tin catalysts and isocyanates may become an issue, depending on the local regulations or green building requirements. Sika has sealants and primers that meet all these requirements.
- Sika installation sealants are widely used for interior sealing as they have a much higher movement capability and better adhesion than acrylics and can be overpainted. Especially in wood construction, joints are exposed to higher movement due to seasonal humidity variations.
- For construction joints, movement joints and connection joints, Sika waterproof joint sealing solutions including hydrophilic gaskets, thermoplastic water bars and tape systems stand up to the unique demands.
Recommendations for choosing joint sealant solutions:
- for non-porous substrates like metal and glass, choose Sika’s innovative silicone range.
- for porous substrates like concrete, bricks and masonry, choose Sika’s advanced polyurethane sealants.
- for applications where a wide adhesion range is required like for window installations, the unique silane-modified polymer sealants are most suitable.
- for joints that are too wide for applied sealants or requiring substantial waterproofing, Sika joint tapes, swellable profiles, water bars and injection hose systems are suggested, depending on a project’s specific needs.
Sika Key Brands: | Application |
SikaHyflex® and Sikaflex® | for building envelopes |
Sikaflex® and Sikasil® | For civil engineering |
Sikaflex®, SikaSeal® and Sikacryl® | For interior finishing |
Sika is present locally in more than 100 countries, which allows them to bring their customers and their clients not only a proven range of products but additional services, such as wind load calculations, application training, CAD details, BIM objects and technical consultations, guarantees, etc. Sika is the only full-range materials supplier for materials used in concrete production, waterproofing, roofing, flooring, sealing, bonding, grouting, reinforcing, concrete repair and protection, structural glazing and more, for all types of buildings and civil engineer structures.