Sika 4A WaterStop Cement Admixture for Waterproofing – 5L 114454 (SK4A5)

Sika 4a WaterStop 5 Litre Seals Running Water Leaks

REF: SK4A5 | MPN: 114454 | Barcode: 5055047200109

This liquid admixture reacts with cement to form a fast-setting mortar plug that instantly stops running water leaks, suitable for both internal and external applications.

Who This Product Is For

This product is designed for building professionals, contractors, and experienced maintenance personnel who need to address active water leaks in structural applications.

It suits situations requiring immediate water infiltration control in basements, foundations, tanks, and other concrete or masonry structures where running water is present.

Key Features

• Rapid Setting: Mixes with cement to create a mortar that sets in seconds, suitable for urgent repairs.
• Waterproof Formula: Seals against high-pressure leaks, providing robust protection.
• Dual Application: Suitable for internal and external use, providing flexibility across multiple projects.
• Potable Water Safe: Approved for use in systems where drinking water contact is required.
• Chloride-Free Composition: Ensures compatibility with sensitive structures while promoting safety.

Practical Applications

The Sika 4a WaterStop excels in a variety of tasks, making it indispensable for both residential and commercial projects. It’s perfect for:

• Sealing leaks in basement walls or floors before applying a waterproof coating.
• Addressing water infiltrations in masonry, rock, or concrete.
• Reinforcing structures exposed to running surface water.
• Rapidly plugging holes in tanks or reservoirs for potable water storage.
• Waterproofing foundations or underground construction sites.

How This Fits Into a Typical Job

This product is used during the active repair phase when water infiltration must be stopped immediately. It creates a temporary or permanent plug that halts water flow, allowing subsequent waterproofing systems to be applied effectively.

The fast-setting mortar plug serves as an initial barrier, after which comprehensive waterproofing membranes or coatings can be installed on a dry surface.

How to Use

1. Preparation:
   • Clean the area around the leak, removing loose debris or contaminants.
2. Mixing:
   • Combine the product with Portland cement in a 1:1 ratio using a gloved hand. For added moisture resistance, you can use a waterproofer additive in the mix.
3. Application:
   • Push the mixed material firmly into the leaking hole until the water stops.
4. Curing:
   • Allow the patch to set completely before applying additional waterproof coatings or systems.
5. Final Steps:
   • Inspect the repair to confirm a secure seal before proceeding with other work.

Specifications

• Pack size: 5 litres
• Application: Internal and external
• Mixing ratio: 1:1 with Portland cement
• Setting time: Seconds
• Composition: Chloride-free
• Water contact: Potable water safe

Storage and Maintenance

• Store in a cool, dry place away from direct sunlight to maintain its effectiveness.
• Keep the container tightly sealed after each use to prevent contamination.
• Clean tools and hands thoroughly after handling the product.

Order Sika 4a WaterStop today to achieve reliable, fast-setting solutions for your toughest waterproofing challenges.

• Specification

  Weight	6 kg
  Reference Code	sk4a5
  Manufacturer	Sika
  Type	Water Stop Cement Additive
  Reference Code sika	114454

• Product FAQs

  Q: What makes this product unique for waterproofing projects?
  A: Its ability to create a mortar that sets in seconds makes it especially effective for stopping active leaks quickly, even under high-pressure conditions.
  Q: Can I use this product in areas that come into contact with drinking water?
  A: Yes, it is certified safe for use in potable water systems, making it appropriate for tanks, reservoirs, and similar applications.
  Q: Is this product suitable for outdoor use?
  A: Absolutely, it is designed to perform in both internal and external environments, offering versatile waterproofing solutions.
  Q: How do I mix this product with cement?
  A: Combine it with Portland cement in a 1:1 ratio using a gloved hand. Once mixed, apply immediately, as it sets rapidly.
  Q: Does this product require any special tools for application?
  A: No specialised tools are necessary. You can mix and apply it directly by hand, provided you wear gloves.
  Q: What surfaces can I use this product on?
  A: It’s compatible with concrete, masonry, and rock surfaces, making it ideal for basements, foundations, and other structures exposed to water infiltration.

• Downloads

  Sika 4a Waterstop Water Stop Technical Data Sheet
  Sika 4a Waterstop Water Stop Admixture Safety Data Sheet