Fire Sealant - Grey - Everbuild - MPN: 486040
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Product Information
Full details
This Everbuild Fire Sealant in Grey (MPN: 486040) is designed for professionals and DIYers seeking to maintain fire integrity in building structures. Its key benefit is providing a robust, flexible seal that resists fire and sound passage for up to five hours. A caveat to consider is its specific application within fire-rated structures, not as a general-purpose sealant. This one-part, emulsion acrylic-based intumescent sealant offers excellent adhesion and acoustic properties, ensuring a firm yet flexible seal.
All features
| Colour | Grey |
|---|---|
| Model Part Number | 486040 |
| Brand | Everbuild Sika |
Extended Product Information
FAQs
What is the fire rating of this sealant?
This Everbuild Fire Sealant is rated for up to five hours of fire resistance.
Can this sealant be painted over?
Generally, intumescent sealants can be painted over once fully cured. However, check the product's specific technical data sheet for confirmation and recommended paint types.
What is the difference between intumescent and acoustic sealant?
Intumescent sealants expand with heat to block fire and smoke. Acoustic sealants are designed to dampen sound vibrations. This product offers both benefits.
How long does it take for the sealant to cure?
Curing time varies depending on temperature, humidity, and bead size. Typically, it is tack-free within a few hours and fully cured within 24-72 hours. Refer to the product data sheet for specific details.
Can I use this sealant for exterior applications?
This sealant is primarily designed for internal fire-rated applications. Its suitability for exterior use would depend on specific environmental exposure and may require additional protection. Consult the manufacturer's guidelines.
What is the shelf life of the sealant?
Unopened, the sealant typically has a shelf life of 12-18 months when stored correctly in a cool, dry place away from frost and direct sunlight.
Troubleshooting
Sealant is difficult to apply
Ensure the nozzle is cut correctly for the gap size. If the sealant is too stiff, check storage conditions; extreme cold can affect its consistency.
Poor adhesion to substrate
Verify that surfaces are clean, dry, and free of dust or contaminants. Consider using a compatible primer on porous or difficult substrates.
Sealant remains uncured after extended period
Check ambient temperature and humidity. Application in very low temperatures or high humidity can slow down the curing process. Ensure adequate ventilation.
Gap is too large for a single bead
This sealant is designed for specific joint sizes as per fire testing. Consult the product's technical data sheet for maximum joint width and depth recommendations. Larger gaps may require a different system or backing material.
Pros and Cons
Pros
- Offers significant fire resistance (up to 5 hours).
- Contributes to sound insulation, improving acoustic performance.
- Easy to apply and tool off.
- Remains flexible after curing, accommodating joint movement.
- Suitable for use in fire-rated construction joints.
Cons
- Specific use case; not for general-purpose sealing.
- Requires proper surface preparation for optimal adhesion.
- Curing time can be affected by temperature and humidity.
- May not be suitable for continuous immersion in water.
Setup, Compatibility & Care
Setup: Ensure surfaces are clean, dry, and free from dust, grease, and loose debris. For porous surfaces, a suitable primer may be recommended. Cut the nozzle to the desired bead size and apply using a standard sealant gun. Tool off immediately after application with a damp tool or spatula.
Compatibility: The sealant is compatible with most common building materials, including concrete, plaster, brickwork, metal, and timber. It is designed for use in fire-rated joints and gaps in accordance with relevant building regulations and manufacturer guidelines. Always check compatibility with specific substrates or adjacent materials if unsure.
Care: Store in original, unopened packaging in a cool, dry place away from direct sunlight and extreme temperatures. Protect from frost. Uncured sealant can be cleaned with water and soap. Cured sealant typically requires mechanical removal.