Sikasil® WS-355
Verified by manufacturer over a year ago
High performance, neutral-curing, low modulus silicone weather sealant.
Application
For professional use only. To be gunned into place. Suitable for jointing natural stone applications such as:
- Marble.
- Granite.
- Sandstone.
- Quartzite.
- Facades (e.g. cladding of natural stone or other materials).
Available in 300 ml or 600 ml. Consult manufacturer for information regarding suitable preparation and application methods for this product. Sika recommend project specific stain testing to confirm the performance of the product.
Description
High performance, neutral-curing, low modulus silicone weather sealant with a high movement capability and good adhesion to porous and non-porous substrates. Developed for use in natural stone applications.
Features and benefits:
- Does not stain areas adjacent to the joint or the joint edges, unlike with conventional silicone sealants.
- Non-streaking.
- Movement capability of ±35%.
- Solvent free, with very low emissions.
- UV and weather resistant.
- Adheres to a wide range of materials, including natural stone, concrete, glass, metals, coated and painted metals.
General information
Material | Silicone |
Uniclass | |
CAWS | F30/610 Movement joints with sealant F30/76 Movement joints with sealant H11/772 Curtain walling joint assembly sealants H11/777 Weathersealing for structural sealant/ bonded glazing H30/160 Profiled plastic sheet rooflights or wall lights H31/110 Metal H31/120 Metal H42/661 Sealant joints H51/610 Sealant joints H51/630 Movement joints H71/770 Wedge fixing into joints/ Chases H71/780 Wedge fixing into damp-proof course joints H71/790 Screw fixing into joints/ Chases H72/770 Wedge fixing into joints/ chases H72/780 Wedge fixing into damp-proof course joints H72/790 Screw fixing into joints/ chases H73/770 Wedge fixing into joints/ chases H73/780 Wedge fixing into damp proof course joints H73/790 Screw fixing into joints/ chases H74/770 Wedge fixing into joints/ chases H74/780 Wedge fixing into damp proof course joints H74/790 Screw-fixing into joints/ chases H75/770 Wedge fixing into joints/ chases H75/780 Wedge fixing into damp proof course joints H75/790 Screw-fixing into joints/ chases H92/770 General sealants L10/75 Sealant joints L10/810 Sealant joints L20/80 Sealant joints L20/820 Sealant joints M20/653 Sealant movement joints with stop bead edgings M21/530 Sealant joints M21/85 Sealant joints M40/75 Sealant movement joints M40/815 Sealant movement joints P31/40 Sealing around services P31/710 Sealing |
Product range |
Specification data - Silicone construction joint sealants
Material | Silicone |
Density | ~1.49 kg/L. |
SAG | Non-sag properties: <2 mm. |
Service temperature | -40°C to +150°C. |
Application temperature | 5–40°C. |
Shore A hardness | (CQP 023-1 / ISO 868): ~22. |
Movement | Movement capability (ASTM C 719): ±35%. |
Elongation at break | (CQP 036-1 / ISO 37): ~800%. |
Thermal resistance | 180°C. Short term: 200°C (four hours), 220°C (one hour). |
TensileStrength | (CQP 036-1 / ISO 37): ~1 N/mm. |