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    Waterproofing

    Hydrothane HPE spray applied hybrid polyurea waterproofing membrane by MATEX

    Hydrothane Hpe

    Two Component, Solvent Free Spray Applied Hybrid Polyurea Waterproofing Coating

    HYDROTHANE HPE is a two-component, solvent-free, spray-applied hybrid polyurea waterproofing membrane engineered for fast, seamless application on complex structures. Utilizing hybrid polyurea technology, HYDROTHANE HPE creates a monolithic, flexible, and highly durable membrane with strong adhesion to concrete, steel, aluminum, wood, and foam. Offering excellent abrasion, impact, and chemical resistance, it ensures long-term performance even under extreme conditions. Its high elongation and thermal stability make it suitable for high-movement structures, while its rapid curing reduces project turnaround times. Environmentally friendly and VOC-free, the membrane adapts to intricate substrate shapes, eliminating stress points and ensuring superior, continuous waterproofing coverage.

    Technical data:
    • Chemical Base : Comp. A: MDI (prepolymer) ,Comp. B: Polyether amine and polyol mixture
    • Mixing ratio : 1:1
    • Application Temperature : -10°C to 50°C
    • Coverage : 1 kg per m² at 1 mm thickness
    • Packaging : 40 & 425 kg set
    Related Documents:

    How to Apply Hydrothane Hpe

    Hydrothane HPE 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 -10°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 takes foot traffic after 1 hour, mechanical load after 2 hours and chemical load after 12–24 hours; the overcoat window is 0–12 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 Hpe 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 ≥ 14–16 MPa)
    ASTM D2240Standard Test Method for Rubber Property—Durometer HardnessShore D hardness (40 ± 5)
    ISO 868Plastics and ebonite — Determination of indentation hardness by means of a durometer (Shore hardness)Shore D hardness
    ASTM D4060Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber AbraserTaber abrasion (<10 mg CS17, <110 mg H18, 1000 cycles)
    ASTM D4541Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion TestersPull-off strength (concrete ≥ 1.5 N/mm², steel ≥ 4 N/mm²)
    ISO 4662Rubber, vulcanized or thermoplastic — Determination of rebound resilienceRebound resilience – listed in TDS, no value given

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

    Frequently Asked Questions

    How is Hydrothane HPE 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 HPE?

    Approximately 1 kg per m² at 1 mm thickness, subject to site conditions.

    How soon can Hydrothane HPE take traffic?

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

    What temperature can Hydrothane HPE be applied at?

    Application temperature is -10°C to +50°C. Below 15°C ambient, the chemical drums should be pre-heated with band heaters to 30 to 40°C.

    Where is Hydrothane HPE used?

    Uses in the TDS include plant rooms and trafficable roof decks, large commercial and industrial waterproofing, water features, under-screed waterproofing of podium decks, bridges, streets and tunnels, and anti-root sub-terrain waterproofing.

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