Joint dimensions and shapes in facades are subject to changes due to thermal expansion and contraction of the building units. The corresponding movements must be accommodated by the sealant in order to protect the inner parts of the building against environmental influences. The movements are either due to the size of the single building units (e. g. pre-cast concrete elements) or the thermal expansion coefficient of different building materials and temperature variations. Additionally, sealants must also be resistant to deterioration due to rain, ultraviolet light and any other elements to maintain an appealing appearance over time. Sika’s flexible and long-lasting sealants are able to absorb these movements and therefore ensure tight and durable joints.
Sika constantly work to develop new products and systems for sealing and bonding façades and windows. We offer an extensive range of sealant solutions for sealing expansion joints and perimeter seals, in a wide choice of colours, for a wide range of substrates. Sika’s polyurethane sealant based on Sika i-Cure® technology. This new moisture-curing technology and the latest production methods allow the formulation of sealants with best properties.
BEST APPLICATION PROPERTIES
KEY PROPERTIES
- Easy to extrude
- Very good workability
- Easy to smooth
- Absolutely non sag
- Good adhesion to many substrates
YOUR BENEFITS
- Faster application, high efficiency
- Higher quality of workmanship
BEST PROPERTIES FOR JOINT DESIGN
KEY PROPERTIES
- Uniform product quality
- Conforms to ASTM C 920, class 35
- Odorless & very low emissions
- Solvent-free
YOUR BENEFITS
- Safety in calculation and design
- Ensures that specs and technical requirements are met
- No risk of complaints from residents due to emissions and odors
BEST PROPERTIES FOR LONG LASTING JOINTS
KEY PROPERTIES
- Outstanding application properties
- Unique bubble free curing mechanism
- Movement capability ±35% (ASTM C 719)
YOUR BENEFITS
- Long lasting construction with less maintenance costs
- Durable sealant with no flaws and bubbles due to unfavourable curing
- Less risk of failures and leakages due to proven movement capability
- Inconspicuous joints due to concretelike surface appearance
Polyurethane Sealant
Application Examples
