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HydroCoat 105 1K

  1. Versatile Waterproofing Power: HydroCoat 105 1K is a high-performance waterproofing slurry that converts into multiple formats using clean water. It delivers reliable waterproofing for concrete and masonry structures.
  2. One Product, Five Solutions: HydroCoat 105 1K functions as a waterproofing slurry, repair mortar, fairing coat, bag-rubbing mix, or thin-section bonded screed. Consequently, one bag supports multiple site requirements.
  3. Impermeable Defence, Anywhere: Advanced micro-silica polymer and fibre technology forms a dense matrix. Therefore, the system achieves high adhesion and resists up to 10 bar water pressure.

HydroCoat 105 1K is a versatile waterproofing slurry suitable for a range of construction and repair applications. This single-component, cementitious system creates a fully bonded, impermeable barrier that resists up to 10 bar of positive and negative water pressure.

By simply adjusting water content, installers can use one product as a waterproofing slurry, repair mortar, fairing coat, or thin-section bonded screed. As a result, HydroCoat 105 1K delivers exceptional flexibility for site teams and specifiers.

HydroCoat 105 1K Waterproofing Slurry – Technical Overview

HydroCoat 105 1K is a single-component, cementitious waterproofing slurry that installers mix easily with clean water. The system is applied by trowel, brush, or airless spray, depending on consistency.

When cured, the slurry forms a fully bonded, impermeable barrier to water. As a result, it resists both positive and negative water pressure across a wide range of applications.

For example, installers can apply HydroCoat 105 1K as a mortar up to 6 mm thick. This allows for waterproof smoothing, levelling, and surface repair in a single operation.

The fast-curing formulation delivers early strength gain and becomes rain-tight within one hour. Consequently, the system supports rapid programme progression on live construction sites.

HydroCoat 105 1K remains vapour permeable while providing long-term moisture resistance. It also performs reliably on damp substrates and in confined spaces.

HydroCoat 105 1K is one product with five uses. Keep a bag in the van at all times.

  • Key Benefits
  • Typical Waterproofing Applications
  • Technical Data
  • FAQ
  • Key Benefits

    Key Benefits

    • Fully waterproof at 2 mm, resisting 10 bar positive and negative pressure
    • Single-component system requiring only clean water
    • Multi-use waterproofing slurry and repair mortar
    • Can be part-mixed to reduce waste
    • Strong early strength gain (13 MPa within 1 day)
    • Rapid drying and rain-tight within one hour
    • Odourless, VOC-free, and water-based

    Typical Waterproofing Applications

    Typical Waterproofing Applications

    • Waterproofing of structural concrete
    • Waterproofing of structural masonry
    • Waterproof smoothing or fairing coat for rough faced surfaces
    • Waterproof surface repair
    • Waterproof levelling and repair to floors
    • Filling surface pinholes to concrete and smoothing rough-faced block walls using bag rubbing technique

    Technical Data

    Technical Data

     Cured Performance  Result
    Colour Grey
    Slurry tanking thickness in one or two coats  2.0 mm
    Adhesion to concrete 2 MPa
    Elongation Not elastomeric
    Compressive strength – 1 day 13 MPa
    Compressive strength – 28 days  45 MPa
    Hardness (28 days) 78 Shore D
    Water vapour resistance – SD value (2 mm) 0.76 m
    Water vapour resistance – μ value (2 mm)  380 μ
    Water vapour resistance (2 mm)  3.8 MNs/g
    Water resistance – Positive & negative  10 Bar
    Reaction to fire classification F – Not tested
    UV resistance Stable but may discolour
    pH 12

    FAQ

    FAQ

    What is a waterproofing slurry?

    A waterproofing slurry is a cementitious coating that forms a fully bonded, impermeable barrier to water on concrete and masonry surfaces.

    What makes HydroCoat 105 1K different from tanking slurry?

    HydroCoat 105 1K offers multiple uses, including waterproofing, surface repair, and fairing. Tanking slurry typically serves a single waterproofing function only.

    Can HydroCoat 105 1K be used for repairs?

    Yes. Installers can use HydroCoat 105 1K as a waterproof repair mortar at thicknesses up to 6 mm.

    Can the waterproofing slurry resist water pressure?

    Yes. At a thickness of 2 mm, HydroCoat 105 1K resists up to 10 bar of positive and negative water pressure.

    Can it be applied to damp substrates?

    Yes. HydroCoat 105 1K performs reliably on damp concrete and masonry substrates when correctly prepared.

    Can installers spray-apply HydroCoat 105 1K?

    Yes. Installers can spray-apply HydroCoat 105 1K using an airless machine when they mix to the correct consistency.

    What thickness should I apply for waterproofing performance?

    HydroCoat 105 1K achieves full waterproofing performance at 2 mm thickness when correctly applied.

    Is HydroCoat 105 1K suitable for confined internal areas?

    Yes. The system is water-based, odourless, and VOC free, which suits internal and confined environments.

    Speak to our friendly, expert team

    Our staff are able to provide guidance for projects of all sizes, whether you require some general advice about damp or waterproofing, or support with technical drawings and specifications.


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