Sika Black Jack 908 – 5L Damp Proof Membrane for Moisture Protection 852663 (90805)

Sika Black Jack 908 DPM Damp Proof Membrane 5 Litre

Ref: 90805

MPN: 852663

Barcode: 5029347009854

This rubber-enriched bitumen emulsion creates an effective moisture barrier for walls and floors while also functioning as an adhesive for various materials.

Who This Product Is For

This Black Jack product is designed for construction professionals, builders, and contractors working on damp-proofing projects in both residential and commercial settings. It also suits experienced DIY users undertaking substantial renovation work that requires reliable moisture protection.

The membrane is appropriate for projects involving concrete foundations, retaining walls, bridge abutments, and interior flooring installations where water ingress prevention is necessary.

Key Features

• Creates an impermeable layer to block water and vapour transmission
• Functions as an adhesive for wood blocks, insulation boards, and challenging substrates like glazed tiles or expanded polystyrene
• Works both indoors and outdoors for various construction and repair applications
• Rubber-enriched formulation improves wear resistance under different conditions

Practical Applications

The Sika Black Jack 908 DPM is used for damp-proofing floors, walls, and retaining structures in residential and commercial environments. Specific uses include:

• Waterproofing concrete foundations and substructures
• Creating moisture-resistant barriers for bridge abutments and culverts
• Bonding wood flooring, cork slabs, and insulation panels
• Acting as a plaster bonding agent on difficult surfaces like tiles and fibre cement

How This Fits Into a Typical Job

This product is applied during the damp-proofing stage of construction or renovation, after surface preparation but before final finishes. It creates a protective moisture barrier that safeguards structures from water damage while also serving as an adhesive for subsequent material installation.

The typical workflow involves surface preparation, application of the membrane in one or two coats with proper drying time between layers, followed by installation of flooring, insulation, or other materials that benefit from both moisture protection and adhesive bonding.

Specifications

• Product type: Rubber-enriched bitumen emulsion damp proof membrane
• Pack size: 5 litre container
• Application method: Brush or roller application
• Drying time: 4-6 hours per coat depending on ambient conditions
• Cleanup: Tools can be cleaned with water after use
• Storage requirements: Cool, dry place away from direct sunlight and frost

Application Guidance

1. Surface preparation: Ensure the surface is clean, dry, and free from dust, grease, and loose debris. Repair cracks and holes with rapid repair cement before coating.
2. Application: Stir thoroughly before use. Apply using a brush or a roller application kit, spreading an even coat across the surface.
3. Layering: For optimal performance, apply two coats, allowing the first coat to dry completely before adding the second.
4. Drying time: Allow 4-6 hours for each layer to dry, depending on ambient temperature and humidity.
5. Post-application: If painting over the membrane, use a suitable primer to prevent potential bleed-through.

Storage and Maintenance

• Store in a cool, dry place away from direct sunlight and frost
• Keep the container tightly sealed when not in use to maintain product quality
• Clean tools immediately after use with water to prevent residue build-up

Order the Sika Black Jack 908 DPM today for your damp-proofing and adhesive bonding requirements.

• Specification

  Weight	6 kg
  Reference Code	90805
  Colour	Black
  Size	5 litre
  Manufacturer	Sika
  Type	DPM Liquid Damp Proof membrane
  Brand	Black Jack
  Reference Code sika	852663

• Product FAQs

  Q: Can I use this product for outdoor applications?
  A: Yes, it is designed for both internal and external use and offers reliable performance in a variety of environments.
  Q: What surfaces can it bond to?
  A: It bonds effectively to wood flooring, insulation boards, cork, expanded polystyrene, and more, including challenging surfaces like glazed tiles.
  Q: Does it require a primer before painting?
  A: Yes, if you plan to paint over the membrane, you should apply a primer recommended by the paint manufacturer to prevent bleed-through.
  Q: How do I ensure proper adhesion?
  A: Before applying the product, make sure the surface is clean, dry, and free of loose material. Stir well to ensure consistency and apply evenly.
  Q: Is this product suitable for waterproofing retaining walls?
  A: Absolutely, it provides a strong barrier for retaining walls, particularly in subsoil-level applications where water resistance is critical.
  Q: How long does it take to cure fully?
  A: While individual coats dry within 4–6 hours, full curing may take longer, depending on environmental conditions.

• Downloads

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