Sika 1 Waterproofer Admixture 5L 114448 Cement and Mortar (SK1WAT5)

RRP £181.40Inc VAT
Our Price £43.92 £52.70 Inc. VAT

Yellow 5-litre container of Sika 1 Waterproofer Admixture for cement and mortar.
Person applying cement mortar to a brick wall using a trowel, with a window in the background.
Illustration of a yellow container and a blue bucket pouring liquid into a larger yellow bucket.

In stock


Sika 1 Waterproofer 5 Litre 114448 is a liquid additive suitable for enhancing the waterproofing properties of sand or cement renders, screeds, and mortar. Its ability to block water transmission makes it ideal for construction professionals and DIY projects that require reliable moisture resistance in both above and below-ground applications.

Available Sizes

Sika 1 Waterproofer Admixture 5L 114448 Cement and Mortar (SK1WAT5)
Sika 1 Waterproofer Admixture 5L 114448 Cement and Mortar (SK1WAT5)
£52.70 Inc VAT
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Sika 1 Waterproofer Admixture 25L for Cement and Mortar 114449
Sika 1 Waterproofer Admixture 25L for Cement and Mortar 114449
£247.07 Inc VAT

4986 in stock

Quantity:
Size
5 litre
EAN
5055047200024
MPN
114448
Product Code
SK1WAT5
SKU
114448

Description

Sika 1 Waterproofer Water Proofing Admixture 5 Litre

REF: SK1WAT5 | MPN: 114448 | Barcode: 5055047200024

This liquid admixture is formulated to create an impenetrable barrier against water transmission in sand and cement-based applications, suitable for both above-ground and below-ground use.

Who This Product Is For

This product is designed for building professionals, contractors, and experienced individuals working on waterproofing projects. It is suitable for those undertaking structural waterproofing work in residential, commercial, or industrial settings.

It is appropriate for jobs involving basement waterproofing, internal tanking systems, damp-proofing treatments, and moisture protection for masonry structures where sand and cement mixes are used.

Key Features

  • Advanced Waterproofing Technology: Prevents water ingress by blocking capillaries and pores in sand and cement mixtures.
  • Versatile Compatibility: Works effectively on brick, concrete, and stone substrates for flexible application.
  • Proven Reliability: Trusted for over 90 years, delivering consistent performance across diverse projects.
  • Live Water Tolerance: This can be applied even in the presence of active water infiltration, making it suitable for challenging conditions.
  • Durable Protection: Resists water pressure and moisture, both internally and externally, for long-lasting results.

Practical Applications

The Sika 1 Waterproofer excels in a variety of scenarios, providing robust protection and ease of use:

  • Sealing below-ground screeds in basements or cellars against water pressure.
  • Creating moisture-resistant renders for walls in humid or damp environments.
  • Internal waterproof tanking to safeguard storage areas from leaks or seepage.
  • Replastering after damp-proof course (DPC) injection treatments.

How This Fits Into a Typical Job

This admixture is incorporated during the mortar preparation stage of waterproofing work. It is mixed directly into sand and cement blends before application to renders, screeds, or pointing mixes.

The waterproofing system involves preparing the substrate, mixing the admixture with mortar components, applying the treated mortar to surfaces, and allowing proper curing. It forms part of a complete waterproofing solution when used in conjunction with appropriate surface preparation and application techniques.

Key Benefits

  • Protects structures from moisture damage, extending their lifecycle and reducing maintenance needs.
  • Easy to incorporate into mortar mixes, helping to achieve a smooth mix.
  • Offers reliable performance in demanding environments.
  • Suitable for potable water applications, offering added versatility.

How to Use

  1. Prepare the Surface: Clean the substrate to remove dust, grease, and loose material. Make sure it is structurally sound before proceeding.
  2. Mix the Mortar: Add Sika 1 Waterproofer to your sand and cement mix in the recommended proportions for optimal results. Use a power mixer for a consistent, lump-free mortar.
  3. Apply the Mixture: Use a mortar pointing gun or trowel to spread the mortar evenly onto the surface, focusing on achieving uniform coverage.
  4. Layering: For enhanced effectiveness, apply multiple coats as required, allowing adequate drying time between layers.
  5. Curing: Once applied, let the mixture cure thoroughly to achieve maximum resistance against water penetration.

Storage and Maintenance

  • Keep the container tightly sealed and store it in a cool, dry place away from direct sunlight.
  • Regularly check the container’s condition and avoid using it if past the 12-month storage life.
  • Clean tools immediately after use to prevent product residue from hardening.

Not Suitable For

  • Applications requiring rapid-setting properties or specialised fast-cure systems
  • Use with pre-mixed mortars or ready-mix concrete without consultation of technical data
  • Direct application as a surface coating without incorporation into sand and cement mixes
  • Projects where alternative waterproofing systems (membranes, sheet materials) are specified

Order the Sika 1 Waterproofer today and protect your structures against water damage with a solution trusted by professionals for decades.

  • Specification
    Weight 6 kg
    Reference Code

    SK1WAT5

    Size

    5 litre

    Type

    Waterproofer

    Reference Code sika

    114448

    Manufacturer

    Sika

  • Product FAQs
    Q:

    What types of surfaces can this product be used on?

    A:

    It works effectively on brick, concrete, stone, and other cement-based substrates, making it ideal for a wide range of construction and maintenance tasks.

    Q:

    Can this product be used for below-ground applications?

    A:

    Yes, it is specifically designed to resist water pressure in below-ground environments, such as basements and cellars.

    Q:

    Is it safe for use with potable water?

    A:

    Absolutely. The formulation is approved for use in contact with drinking water, ensuring safety and compliance with standards.

    Q:

    How does this product prevent water ingress?

    A:

    The formula’s complex silicates react with water to swell and block capillaries and pores in the mortar, creating a highly effective waterproof barrier.

    Q:

    What is the recommended storage condition for this product?

    A:

    To maintain its effectiveness, store it in a cool, dry location away from direct sunlight, with the container tightly closed.

    Q:

    Does it require any special tools for application?

    A:

    No specialised tools are needed. Standard masonry tools can be used for mixing and application, making it convenient for a variety of projects.

  • Downloads

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