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    Waterproofing

    Hydrocryl 300FB fiber reinforced acrylic waterproofing membrane by MATEX, 20 kg pail

    Hydrocryl 300 Fb

    Fiber Reinforced Flexible Acrylic Based Waterproofing Membrane

    HYDROCRYL 300FB is an elastomeric, single-component, fiber-reinforced, liquid-applied acrylic-based waterproofing membrane designed for long-lasting protection. Upon curing, it forms a seamless, tough, and highly elastic waterproof layer that adheres well to various substrates. HYDROCRYL 300FB is specially formulated to resist ultraviolet (UV) rays, allowing it to perform exceptionally well in direct sunlight and exposed conditions which makes it ideal for use on building roofs, hangar roofs, factories, storage facilities, and metal sheds. It has enhanced flexibility and fiber reinforcement and offers excellent durability, weather resistance, and ease of application, making it a reliable solution for both new and existing waterproofing projects.

    Technical data:
    • Color : grey or white liquid
    • Touch dry : 8 hours
    • Service Temperature : 5 to 70°C
    • Application rate : 1.45 kg/m²/coat (500 micron)
    • Coverage : One pack covers approx. 13.5 m² per coat @ 500 micron thickness
    • Packaging : 20 kg plastic pail
    Related Documents:

    How to Apply Hydrocryl 300 Fb

    Hydrocryl 300FB is a ready-to-use, fiber-reinforced single-component membrane applied in a minimum of two coats.

    1. Prepare the surface. All surfaces must be sound, clean, dry and free from loose material, efflorescence, laitance, curing compounds, dirt, oil and grease. Concrete must be cured for at least 28 days.
    2. Check the substrate type. Bituminous roof membranes must be clean and free of de-bonding blisters. PU foam must be clean and dust-free, and steel should be prepared mechanically or by blasting.
    3. Mix. Shake the closed pail, or mix slowly for 3-5 minutes with a paddle on a slow-speed drill until homogeneous.
    4. Apply the first coat. Apply by roller, trowel, brush or spray at 1.45 kg/m² per coat (500 micron). On porous substrates or in very hot climates, dilute the first coat with 20% water.
    5. Apply the second coat. Apply subsequent coats at the same rate, preferably at right angles to the first. A minimum of two coats at 500 microns each is required.
    6. Cure and protect. Allow 7 days for the coating to reach full properties. Take protective measures in water-logging areas, as prolonged water stagnation softens the coating.
    7. Clean tools. Clean tools with water before the product hardens. Hardened material can only be removed mechanically.

    Summary of the method in the Hydrocryl 300 Fb Technical Data Sheet. Always follow the full TDS on site.

    Standards & Test Methods

    StandardTitleReferenced for
    ASTM D2240Standard Test Method for Rubber Property—Durometer HardnessShore A hardness (45)
    ASTM D412Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—TensionTensile strength (1.2 N/mm²) and elongation (>100%)
    BS EN 12390Testing hardened concreteWater penetration (nil)
    DIN 1048Testing methods for concrete (Prüfverfahren für Beton)Resistance to water pressure (>5 bar)
    EN 14891Liquid applied water impermeable products for use beneath ceramic tiling bonded with adhesives — Requirements, test methods, assessment and verification of constancy of performance, classification and markingListed in the TDS
    ASTM C1305Standard Test Method for Crack Bridging Ability of Liquid-Applied Waterproofing MembraneListed in the TDS

    Standards and test methods as referenced in the Hydrocryl 300 Fb Technical Data Sheet. Values in the TDS are typical laboratory results under standard conditions.

    Frequently Asked Questions

    What is the difference between Hydrocryl 300FB and Hydrocryl 300?

    Hydrocryl 300FB is the fiber-reinforced version of the acrylic membrane. It is applied at 1.45 kg/m² per coat (500 micron) versus 1.30 kg/m² for Hydrocryl 300, and its TDS lists elongation of >100% (ASTM D412).

    What is the coverage of Hydrocryl 300FB?

    One 20 kg pail covers approximately 13.5 m² per coat at 500 micron dry film thickness. A minimum of two coats is required.

    What surfaces can Hydrocryl 300FB be applied to?

    It adheres to concrete, plaster, masonry and metal, and can be applied over old bituminous roof waterproofing, PU foam roofing and as a top coat to EIFS systems.

    How long does Hydrocryl 300FB take to dry and cure?

    It is touch dry in 8 hours and should be allowed 7 days to fully cure.

    What is the shelf life of Hydrocryl 300FB?

    Up to 12 months when stored in the original 20 kg plastic pail in a covered, cool, dry place away from direct sunlight, heat and high humidity.

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