Sika Black Jack 908 – 25L Damp Proof Liquid Membrane 852664 (90825)

Sika Black Jack 908 DPM Damp Proof Liquid Membrane – Large 25 Litre Drum

Ref: 90825

MPN: 852664

Barcode: 5029347009830

This professional-grade damp-proof liquid membrane creates moisture-resistant barriers for both internal and external applications, enhanced with rubber for flexibility and featuring a low-odour formula.

Who This Product Is For

This product is designed for construction professionals, including builders, contractors, and damp-proofing specialists working on residential, commercial, and industrial projects.

It suits those tackling damp-related issues in floors, walls, and foundations, whether for new construction or renovation work where moisture protection is required.

Key Features

• Rubber-Enriched Formula: Provides enhanced flexibility and durability while maintaining a robust waterproof barrier.
• Odour-Free Application: Suitable for interior work without strong fumes.
• Flexible Use: Functions as a damp-proof membrane, adhesive, or bonding agent on various surfaces, including concrete, plaster, and insulation boards.
• Internal and External Compatibility: Suitable for indoor and outdoor environments, offering year-round performance.
• Water Clean-Up: Simplifies post-application maintenance by allowing easy cleaning with water.

Practical Applications

This product delivers protection and adhesion across many scenarios:

• Used for creating sandwich damp-proof membranes in floors and walls.
• Provides a moisture-resistant coating for foundations and above-ground structures.
• Acts as an adhesive for securing wood blocks, insulation boards, polystyrene, and cork.
• Serves as a bonding agent for plastering over difficult substrates such as glazed tiles.
• Offers waterproofing solutions for structures like retaining walls and bridge abutments.

How This Fits Into a Typical Job

This liquid membrane is typically applied during the preparation phase before final finishes are installed. It creates the moisture barrier that protects the structure, then can serve as an adhesive for subsequent materials like insulation boards or as a bonding agent for plaster applications.

In a damp-proofing workflow, it forms the critical barrier layer between the substrate and finishing materials, preventing moisture migration while providing adhesion for the next construction phase.

How to Use

1. Preparation: Make sure the surface is clean, dry, and free of dust, grease, and loose debris. Remove old coatings thoroughly.
2. Stirring: Mix the product thoroughly to achieve a consistent texture before application.
3. Application: Use a brush, roller, or spray to apply an even coat. For optimal results, allow the first coat to dry fully before applying additional layers.
4. Drying Time: Depending on environmental conditions, drying typically takes 4-6 hours. Provide adequate ventilation during the process.
5. Post-Application: If painting over the membrane, use a primer recommended by the paint manufacturer to prevent bleed-through. A rapid DPM primer can help seal the surface before decoration.

Specifications

• Pack size: 25 litre drum
• Function: Damp-proof membrane, adhesive, and bonding agent
• Surface compatibility: Concrete, plaster, insulation boards, wood, polystyrene, cork, glazed tiles
• Application: Brush, roller, or spray
• Drying time: 4-6 hours depending on conditions
• Clean-up: Water

Storage and Maintenance

• Store in a cool, dry location away from direct sunlight or frost to maintain product quality.
• Clean tools immediately after use to avoid material hardening and extend their lifespan.
• Inspect the container regularly for signs of damage to keep it usable.

Order Sika Black Jack DPM today to create a strong, durable barrier against moisture and water ingress. It suits construction professionals and homeowners tackling damp-related issues.

• Specification

  Weight	26 kg
  Reference Code	90825
  Colour	Black
  Size	25 litre
  Manufacturer	Sika
  Type	DPM Damp Proof Liquid Paintable Tanking membrane
  Brand	Black Jack
  Reference Code sika	852664

• Product FAQs

  Q: What is the purpose of this product?
  A: It provides a reliable waterproof barrier for floors, walls, and structural elements, protecting against moisture damage in both internal and external settings.
  Q: Can this product be used as an adhesive?
  A: Yes, it functions effectively as an adhesive for wood flooring, insulation boards, and other materials, ensuring strong and lasting adhesion.
  Q: Does it require special preparation for application?
  A: The surface should be clean, dry, and free of any contaminants. This ensures maximum adhesion and performance.
  Q: Is it suitable for outdoor use?
  A: Absolutely, it can be applied externally to protect foundations, retaining walls, and other structures from water ingress.
  Q: What precautions should I take during application?
  A: Avoid using the product if rain is imminent, and ensure proper ventilation when working indoors for quicker drying.
  Q: Can it be painted over?
  A: While it can be painted over, bleeding may occur. To minimise this, use a suitable primer as recommended by the paint manufacturer.

• Downloads

  Sika Black Jack 908 DPM Damp Proof Membrane Technical Data Sheet
  Sika Black Jack 908 DPM Damp Proof Membrane Safety Data Sheet