Sika Plastix 22A Silicone Sealant - Black - 300 ml
Not Available
Currently unavailable
Currently out of stock
This product is not available at the moment. Check back later.
Product Information
Full details
This versatile black silicone sealant is designed for professional weather sealing and joint sealing in demanding applications like aluminium glazing systems, curtain walls, and facade panels. Its key benefit is its durable, weatherproof, and UV-resistant seal, suitable for both interior and exterior use. A potential caveat is that it requires a specific application method for optimal adhesion, and is best suited for non-porous surfaces. It offers quick curing, low dirt pick-up, and excellent adhesion to various materials including coated metals and anodized aluminium, making it ideal for construction and renovation projects.
All features
| Colour | Black |
|---|---|
| Brand | Sika |
Extended Product Information
FAQs
What surfaces is Sika Plastix 22A Black best suited for?
It is ideal for coated metals, anodized aluminium, stainless steel, uPVC, wood, and glass. It is also certified for facade, glazing, cold climate, and sanitary applications.
Can this sealant be painted over?
No, silicone sealants are generally not designed to be painted over. Paint typically does not adhere well to silicone.
What is the temperature range for application?
While the service temperature is -50°C to +150°C, it is best applied in conditions between +5°C and +40°C. Refer to the technical data sheet for precise application temperature limits.
How long does it take to cure?
The sealant skins over in approximately 15-30 minutes and cures fully within 24 hours for a typical bead size, depending on temperature, humidity, and bead thickness.
Is this sealant suitable for bathrooms?
Yes, it is certified for sanitary applications and offers good resistance to weathering and UV, making it suitable for sealing around bathroom fixtures.
How do I clean up uncured sealant?
Uncured sealant can be removed with a clean cloth and a solvent such as white spirit. Ensure good ventilation during cleanup.
What is the shelf life of the product?
Typically, cartridges have a shelf life of 12 months from the date of manufacture when stored in original, unopened packaging in a cool, dry place.
Troubleshooting
Sealant not adhering well
Ensure surfaces are thoroughly cleaned, dry, and free of contaminants. Apply a Sika-approved primer if recommended for the substrate material.
Sealant is too stringy or difficult to apply
Ensure the cartridge and nozzle are at room temperature. Check that the caulking gun is functioning correctly and applying even pressure.
Sealant is curing too slowly
Verify that there is adequate air circulation and humidity. Cold temperatures or very dry conditions can slow the cure rate. Ensure the sealant is within its recommended shelf life.
Appearance of mould on the sealant
While the sealant is suitable for sanitary applications, persistent high humidity can encourage mould growth on any surface. Clean the area regularly with a mild detergent and ensure good ventilation.
Pros and Cons
Pros
- Excellent adhesion to a variety of materials including coated metals, anodized aluminium, and stainless steel.
- Fast curing time and virtually odourless, improving application efficiency and user experience.
- Durable, weatherproof, and UV-resistant for long-term exterior performance.
- Low dirt pick-up helps maintain a clean aesthetic.
- Suitable for a wide range of temperatures, from extreme cold to high heat.
Cons
- Primarily designed for non-porous surfaces; may require specific primers for porous substrates.
- Requires a caulking gun for application, which is an additional tool needed.
- Neutral cure may not be suitable for all sensitive substrates that require an acetoxy cure.
- Clean-up of uncured sealant might require specific solvents.
Setup, Compatibility & Care
Setup: Ensure the surfaces to be sealed are clean, dry, and free from dust, grease, and loose particles. For optimal adhesion, particularly on difficult surfaces, consult Sika's technical data sheets for appropriate primers. Cut the nozzle tip at an angle to achieve the desired bead size and insert the cartridge into a standard caulking gun.
Compatibility: This sealant is tested for use with coated metals, anodized aluminium, stainless steel, uPVC, wood, and general glazing applications. It is suitable for facade, glazing, cold climate, and sanitary applications. Avoid contact with certain plastics or rubber types that may react with the sealant; always perform a test application if unsure.
Care: Uncured sealant can be removed using a clean cloth and appropriate solvent (e.g., white spirit). Cured sealant can be removed mechanically or with a sealant remover. For long-term maintenance, simply clean the sealed area with mild soap and water. Avoid abrasive cleaners that could damage the sealant surface.