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Why is joint sealing important?
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.
About Sika sealants
- Sika’s sealants show good adhesion to a wide range of materials including concrete, masonry, painted wood, coated or galvanized aluminium, 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 waterbars and tape systems stand up to the unique demands.
When Choosing a Joint Sealant Solution, Sika Recommends...
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 which are too wide for applied sealants or requiring substantial waterproofing, Sika joint tapes, swellable profiles, waterbars and injection hose systems are suggested, depending on a project’s specific needs.