- Sika NZ
SikaHyflex-250 façade is a low modulus sealant that resists weather, tearing and earthquakes.
It is specified to accommodate joint movements of +100% expansion and -50% contraction. However, a recent lab test saw it stretch to over +800% without failing. This is far in excess of the capacity of ordinary silicone façade sealants. Traditional silicone façade sealants fail immediately if they are damaged while under tension. But the SikaHyflex-250 façade is tear resistant, so even if it is damaged in an earthquake, only minor repair work is needed rather than complete replacement.