Everbuild Tecnic Silicone 825 - 380ml - Anthracite

This Everbuild Tecnic Silicone 825 is a low modulus, neutral curing silicone sealant based on a fi...

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Product Information

Full details

The Everbuild Tecnic Silicone 825 is a versatile, low-modulus silicone sealant designed for professionals and DIYers requiring a reliable, neutral-cure sealant with extended tooling time. It offers excellent flexibility for expansion joints and weather sealing on a variety of construction materials, suitable for both interior and exterior applications. A key benefit is its formulation that allows for longer working periods, reducing stress on longer joints. However, its alkoxy cure system means it is not suitable for applications where stress occurs before full cure.

All features

ColourGrey
Model Part Number825ANTH
BrandEverbuild

Extended Product Information

FAQs

What is the cure time for Everbuild Tecnic Silicone 825?

The skin time is typically 15-30 minutes, and the sealant is usually tack-free within 60 minutes. Full cure can take 24-72 hours depending on bead size, temperature, and humidity.

Can this silicone be painted over?

No, silicone sealants are generally not designed to be painted over. Paint may not adhere well and can peel or crack.

Is this product suitable for bathrooms or kitchens?

While it can be used for general sealing, it is not specifically formulated as an anti-fungal or mould-resistant bathroom sealant. For those specific applications, a dedicated sanitary or bathroom silicone would be more appropriate.

What is the flexibility rating of this silicone?

The Everbuild Tecnic Silicone 825 offers +/- 35% movement capability, meaning it can accommodate joint expansion and contraction of up to 35% of the joint width.

Can I use this silicone on UPVC frames?

Yes, this silicone is compatible with UPVC frames and is commonly used for perimeter pointing around window and door frames.

What does ISO 11600 F25LM and G25LM mean?

F25LM refers to a sealant for facade construction joints with +/- 25% movement capability. G25LM refers to a general-purpose sealant with +/- 25% movement. This product exceeds the minimum movement requirement with its +/- 35% capability and is certified to these standards.

How do I remove uncured silicone sealant?

Uncured silicone can usually be removed with a damp cloth and mild detergent or a suitable solvent like white spirit. Always test solvents in an inconspicuous area first.

Troubleshooting

Sealant is not adhering to the surface.

Ensure the surface is clean, dry, and free from dust, grease, or old sealant. Some non-porous surfaces may require a primer; consult the product technical data sheet.

Sealant is skinning too quickly for tooling.

While this product has extended tooling time, ensure you are working in ideal temperature conditions (typically 5-25°C). Very high temperatures can accelerate skinning.

Uneven or poor bead application.

Ensure the nozzle is cut at the correct angle for the desired bead size and that the sealant gun is operated with consistent pressure. Practice on a scrap surface if necessary.

Sealant remains tacky after extended period.

This can occur in very cold or humid conditions. Ensure adequate ventilation and allow additional curing time. Check that the bead thickness is not excessively large.

Pros and Cons

Pros

  • Excellent flexibility for accommodating joint movement.
  • Extended working time aids in achieving a cleaner, more professional finish on large areas.
  • Neutral cure is safe for use on sensitive materials.
  • Suitable for both internal and external applications.
  • Good adhesion to a wide range of common building materials.

Cons

  • Not suitable for joints that experience stress before the sealant is fully cured.
  • Alkoxy cure may have a longer cure time in cold or humid conditions.
  • Requires a sealant gun for application.
  • Limited color options compared to some other sealants.

Setup, Compatibility & Care

Setup:

  1. Prepare the Surface: Ensure the joint or area to be sealed is clean, dry, and free from dust, grease, and old sealant.
  2. Cut the Nozzle: Using a sharp knife, cut the nozzle at a 45-degree angle to achieve the desired bead width.
  3. Load the Gun: Pierce the cartridge seal and load it into a standard sealant gun.
  4. Apply the Sealant: Apply a continuous bead of sealant into the joint, ensuring full contact with both surfaces.
  5. Tool the Bead: Smooth the sealant immediately after application using a wet finger, spatula, or tooling tool. The extended tooling time of Tecnic Silicone 825 allows for careful shaping.
  6. Clean Up: Remove excess sealant with a damp cloth or appropriate solvent before it cures.

Compatibility:

  • Suitable for use with stone, brick, concrete, composite panels, and common window and door frame materials (e.g., PVC, wood, aluminum).
  • Certified to ISO 11600 F25LM and G25LM standards, indicating suitability for facade and general construction joints.
  • Avoid use in areas where the sealant will be subjected to stress before it is fully cured.

Care:

  • Once cured, the sealant can be cleaned with mild soap and water. Avoid abrasive cleaners.
  • The sealant is designed for long-term exterior and interior use and requires no special maintenance. Ensure joints remain unobstructed for proper movement.

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