Joint sealing or sealants is a sealing of the joints between materials which may be the same or different materials and the place of the joints may be different. Joints sealing help to prevents dust and waterproofing. Joints need to allow the material to movement without cracking.

Sika's joint sealing products is a high performance sealants and very good resistance to weathering, designed for construction joint and conection joint such as around window and door frames, sanitary sealant, waterproofing tape, floor joint etc. Choosing of sealants should be match with the application, the surface of material and application area.

Why Joint Sealing is 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. .

Joint Sealing by Sika

Sika Solutions & Experience

  • 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.

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.

As Sika is globally present in over 100 countries, we can respond to your needs and local requirements wherever projects are located.

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.
Application area
  • Interior use, not exposed to sunlight and dry are. Joints sealing and interior finishing that polished and over painted such as filling cracks in the wall before painting. Recommend to used acrylic sealant.
  • Interior and exterior use, exposed to sunlight and wet area. Joints sealing and interior finishing that polished and over painted such as glass sealant, sanitary sealant and top counter in the kitchen. Recommend to used silicone sealant.
  • Interior and exterior use, high movement joint. Joints sealing and interior finishing that polished and over painted such as sealing between structure, pre-cast concrete, metal sheet, roof tile etc. Recommend to used polyurethane sealant.
Wide Joints and Waterproofing

For joints that 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.  

There are also foam sealants or PU foam sprays. Used for filling holes or gaps. It can be trimmed and over painted, such as holes around pipes, joints around door or window frames, holes in the roof structure, gaps around the air conditioner etc.