Description
Sikasil® WS-290 is a high-performance, one-component, neutral-curing silicone sealant designed for demanding applications that require extreme flexibility and movement accommodation. This ultra-low modulus sealant is ideal for sealing expansion and control joints, EIFS, curtain walls, and glazing applications where long-term durability and weather resistance are critical.
Key Features & Benefits:
- Ultra-Low Modulus: Accommodates joint movement of +100/-50%
- Exceptional Weather Resistance: Withstands UV, ozone, and harsh weather conditions
- Strong Adhesion: Bonds to a wide range of building materials, including concrete, metal, and glass
- Non-Staining: Safe for use on porous substrates
- Easy Application: Excellent gunnability in all temperatures
- Versatile Use: Suitable for EIFS, curtain walls, glazing, and expansion joints
Applications:
- Expansion and control joints in precast concrete and metal curtain walls
- Weathersealing in glass-to-glass butt joint glazing
- Non-structural glazing applications (cap, toe, and heel beads)
- Exterior Insulation Finish Systems (EIFS)
Approvals & Standards:
- ASTM C920, Type S, Grade NS, Class 100/50, Use NT, M, G, A, O
- SWRI validated acc. to ASTM C719 (No. 623-SIK290)
- ASTM C1248 (staining on porous substrates)
- Federal specification TT-S-00230C, Type II, Class A
- Canadian Standard CAN/CGSB 19.13-M87
Packaging:
- 10 fl.oz. (295 ml) cartridge
- 20 fl.oz. (600 ml) sausages
- 2 gal. pails (7.6 L)
Experience the difference with Sikasil® WS-290 – the ultimate solution for dynamic joints.
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