Everbuild Sika Silicone Sealant - Brown 380ml
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OnBuy.comEverbuild Sika 467208 Tecnic Silicone 825 Sealant Brown 380Ml Evb825bn
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Product Information
Full details
This Everbuild Tecnic Silicone 825 Sealant in brown is ideal for builders and DIY enthusiasts needing a durable, neutral-cure silicone for sealing expansion joints in masonry, concrete, and around window and door frames. Its key benefit is the extended tool-down time, allowing for easier application on longer or more complex joints. A caveat to consider is its suitability primarily for joints where stress occurs only after curing.
All features
| Colour | Brown |
|---|---|
| Model Part Number | EVB825BN |
| Brand | Everbuild |
Extended Product Information
FAQs
What is the cure time for this sealant?
The sealant will skin over in approximately 20-30 minutes and will be fully cured within 24-48 hours, depending on joint depth, temperature, and humidity.
Can this sealant be painted over?
No, this silicone sealant is not designed to be painted over. It is a non-paintable finish.
What is the temperature range for application?
It is generally recommended to apply the sealant between 5°C and 30°C.
Is this sealant suitable for bathrooms or kitchens?
While it provides weatherproofing, it is not specifically formulated as an anti-fungal or kitchen/bathroom sealant. For those applications, a dedicated sanitary or kitchen sealant is recommended.
What does 'low modulus' mean for a sealant?
Low modulus means the sealant has a lower resistance to stretching once cured. This allows it to accommodate movement in joints without failing, making it suitable for expansion joints.
What does 'neutral cure' mean?
Neutral cure means the sealant releases a non-acidic byproduct as it cures, which is less corrosive and has less odor compared to acidic cure sealants. This makes it safe for use on a wider range of materials.
How should I clean up excess uncured sealant?
Uncured sealant can be wiped away with a damp cloth or a solvent-safe cleaning wipe. Once cured, it will need to be mechanically removed.
Troubleshooting
Sealant not dispensing
Ensure the cartridge is properly loaded in the sealant gun and the nozzle tip and inner seal have been pierced correctly.
Sealant skinning too quickly
While formulated for extended tool-down time, ensure you are working in optimal temperature conditions and avoid excessive disturbance of the applied bead.
Poor adhesion
Verify that the substrate was clean, dry, and free from dust, grease, or old sealant. Ensure the correct application method was followed and the sealant has fully cured before applying stress.
Uneven finish after tooling
Use a suitable tooling agent or a damp cloth/spatula to smooth the bead immediately after application. Practice on a less visible area if needed.
Pros and Cons
Pros
- Provides extra working time for easier application on large or complex joints.
- Neutral cure formula with low odor.
- Good adhesion to various construction materials.
- Durable and weather-resistant when fully cured.
- Conforms to recognized industry standards.
Cons
- Best suited for joints where stress occurs only after curing.
- Brown color may not be suitable for all aesthetic requirements.
- Requires a sealant gun for application.
- Not recommended for joints with constant movement or high stress before curing.
Setup, Compatibility & Care
Setup:
- Ensure the surface is clean, dry, and free from dust, grease, and other contaminants.
- Cut the nozzle to the desired bead size.
- Pierce the inner foil seal.
- Load the sealant cartridge into a standard sealant gun.
- Apply the sealant evenly into the joint.
- Tool the sealant within the recommended time using a damp tool or spatula to achieve a smooth finish.
Compatibility:
This sealant is compatible with most common building materials including stone, brick, concrete, and painted or unpainted wood and metal frames. It is not recommended for use on surfaces that may bleed oils or plasticizers.
Care:
Store unused sealant in a cool, dry place away from direct sunlight and frost. Once opened, it is best used within a few weeks to maintain optimal performance.