Description
Product Data Sheet
Sikasil® WS-290 is a one-part, neutral-curing, ultra lowmodulus, low to no bleed silicone sealant that cures to a durable, flexible building sealant Sikasil® WS-290 performs exceptionally well under dynamic conditions due to its ultra-low modulus, high extension/compression, recovery properties and strong adhesion to most building materials. Sikasil® WS-290 accommodates long-term movement of +100/-50 % in properly designed joints and is particularly well suited for use in Exterior Insulation Finish Systems (EIFS). Meets the requirements of ASTM C-920, Type S, Grade NS, Class 100/50, Use NT, M, G, A, O; TT-S-00230C, Type II, Class A; TT-S-001543A, Class A; CAN/CGSB-19.13-M87.
Uses
Sikasil® WS-290 silicone sealant has been specifically designed:
- For sealing expansion and control joints in precast concrete panels and metal curtain walls.
- As a weatherseal in glass to glass butt joint glazing.
- As a weatherseal in nonstructural glazing applications, including cap, toe and heel beads.
- Exterior Insulation Finish Systems (EIFS) and numerous other areas requiring a high-performance sealant.
Product Features
- Ultra low modulus
- Unaffected by most atmospheric conditions
- Excellent resistance to UV and Ozone exposure
- Non-staining to most porous substrates
- Joint movement +100/-50 %
- Excellent adhesion to most substrates and surfaces
- One-component, moisture-curing
- Excellent gunnability in all temperatures
