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    Waterproofing

    Hydrothane HP spray applied pure polyurea waterproofing coating by MATEX

    Hydrothane Hp

    Two Component, Solvent Free Spray Applied Pure Polyurea Waterproofing Coating

    HYDROTHANE HP is a solvent-free, two-component pure polyurea coating, designed for spray-applied, instant-curing waterproofing applications. It forms a flexible, seamless, hard-wearing membrane across simple and complex surfaces with excellent adhesion to concrete, steel, aluminum, plastics, fibers, wood, and foam. HYDROTHANE HP delivers outstanding abrasion, impact, and chemical resistance, maintaining excellent mechanical properties even under extreme climatic conditions. It is VOC-free and environmentally friendly, offering a rapid application process to any thickness with fast curing for quicker project turnaround. Ideal for exposed surfaces, it ensures superior flexibility, seamless protection, and reliable performance across multiple substrates in demanding environments.

    Technical data:
    • Chemical Base : 100% polyurea
    • Mixing ratio : 1:1
    • Application Temperature : -5°C to 50°C
    • Coverage : 1 to 1.1 kg per m² at 1 mm thickness
    • Packaging : 40 & 425 kg set
    Related Documents:

    How to Apply Hydrothane Hp

    Hydrothane HP is spray applied only, by trained and approved applicators using high pressure heated multi-component equipment; the detailed procedure is in the MATEX method statement.

    1. Prepare the surface. All surfaces should be sound, clean, dry and free from loose material, efflorescence, laitance, curing compounds, dirt, oil, grease and any contamination that might impair adhesion. Remove deep contamination by grinding or grit captive blasting, and repair damaged areas with suitable repair materials before waterproofing.
    2. Mix component B. Components are delivered ready to use. Mix component B thoroughly with a power stirrer before spraying and periodically during spraying to prevent settling; component A does not need stirring. Never mix A with B except through the approved application equipment.
    3. Set up the equipment. Pre-condition material to 25°C to 30°C; in ambient temperatures below 15°C pre-heat drums with band heaters to 30 to 40°C. Set primary heaters at 65–75°C and hose heaters at 70°C (adjustable on site), fit desiccant dryers to both drums and supply compressed air through an air dryer.
    4. Protect surroundings. Mask off surrounding areas against overspray and erect barriers to stop spray mist being carried by wind.
    5. Spray apply. Spray through the impingement gun at a material temperature of 65°C to 75°C, within an application temperature of -5°C to +50°C. The product can be applied to any thickness; coverage is given per mm of thickness.
    6. Cure and load. Tack free time is 10–20 seconds at 20°C. It is walkable after 1 hour, takes mechanical load after 2 hours and chemical load after 12–24 hours; the overcoat cycle is 0–10 hours without additional preparation and priming.
    7. Clean equipment. Clean tools and equipment with soapy water; once curing has commenced a suitable solvent can be used.

    Summary of the method in the Hydrothane Hp Technical Data Sheet. Always follow the full TDS on site.

    Standards & Test Methods

    StandardTitleReferenced for
    ASTM D638Standard Test Method for Tensile Properties of PlasticsTensile properties (tensile strength ≥ 16 MPa)
    ASTM D2240Standard Test Method for Rubber Property—Durometer HardnessShore D hardness (45 ± 5)
    ISO 868Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore hardness)Shore D hardness
    ISO 4662Rubber, vulcanized or thermoplastic — Determination of rebound resilienceRebound resilience (≥ 32)
    ASTM D4060Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber AbraserTaber abrasion (<8 mg CS17, <80 mg H18, 1000 cycles)
    ASTM D4541Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion TestersPull-off strength on concrete (≥ 1.5 N/mm²)

    Standards and test methods as referenced in the Hydrothane Hp Technical Data Sheet. Values in the TDS are typical laboratory results under standard conditions.

    Frequently Asked Questions

    How is Hydrothane HP applied?

    Only with high pressure heated multi-component spray equipment feeding an impingement spray gun, and only by trained and approved applicators. The mixing ratio is 1:1 by volume and spraying material temperature is 65°C to 75°C.

    What is the coverage of Hydrothane HP?

    Approximately 1–1.1 kg per m² at 1 mm thickness. The coverage rate is approximate and subject to site conditions.

    How fast does Hydrothane HP cure?

    Tack free time is 10–20 seconds at 20°C. It is walkable after 1 hour, takes mechanical load after 2 hours and chemical load after 12–24 hours.

    What temperature can Hydrothane HP be applied at?

    Application temperature is -5°C to +50°C. Below 15°C ambient, the chemical drums should be pre-heated with band heaters to 30 to 40°C.

    What packaging and shelf life does Hydrothane HP have?

    It is supplied in 40 or 425 kg sets. Shelf life is 12 months from production in unopened original packing stored dry at 10°C to 30°C, away from direct sunlight and high humidity.

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