SikaHyflex®-250 Facade

The Christchurch earthquakes showed the vulnerability of many older technology façade sealants. Façade sealants failed on buildings that were of such distance from the quake centres that such damage need not have occurred.

Sika’s new SikaHyflex-250 Facade sealant is very low modulus. It is specified to accommodate joint movements of up to +100%  expansion anddown to -50% contraction. (Tests have shown in some circumstances it has the ability to stretch over +900% without failing).

It’s a tear resistant sealant too. Older technology silicone sealants immediately fail like a zip undoing if they are cut when under tension, but SikaHyflex-250 Facade uses such advanced polyurethane technology, it won’t fail when damaged.

And it has exceptional resistance to aggressive UV and extreme weather conditions too.

• Excellent performance during earthquakes
  Building integrity maintained – no sealant splitting or tearing
• High movement capability
  Less pressure on the substrate so less damage to the substrate.
• High tear resistance
  Won’t ‘unzip” like typical silicone joint sealants if damaged when under load.
• Excellent weathering and UV resistance
  Long term durability and lower maintenance costs.
• Excellent adhesion to most building substrates
  One sealant for all applications. No risk of incompatibility.
• Preferred by Contractors. “Easy to use”. Very good workability and non sag
  Faster application so faster completion. Higher standard of workmanship.
• Can be painted over
  Unlimited design options compared to silicones.
• Conforms to all leading standards
  Uniform product quality. Specify with confidence.
• Solvent free
  No chemical odours.