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    Waterproofing

    Hydrolastic BP2000 water based bitumen extended hybrid polyurethane waterproofing membrane by MATEX

    Hydrolastic Bp2000

    Water Based Bitumen Extended Hybrid Polyurethane Waterproofing Membrane

    HYDROLASTIC BP2000 is a VOC-free, water-based, cold-applied single-component hybrid polyurethane membrane extended with bitumen emulsion. It cures to form a seamless, highly flexible, continuous monolithic membrane ideal for vertical, horizontal, and overhead applications in foundations, kitchen and toilet floors, building facades, and roofs. HYDROLASTIC BP2000 offers exceptional flexibility over 2000%, excellent adhesion to substrates, and strong resistance to chloride and sulphate attacks. It withstands underground groundwater aggression, puncture, and impact, ensuring superior corrosion protection. This environmentally friendly, odor-free membrane is easy to apply with a paintable consistency and delivers outstanding durability under thermal cycling and harsh site conditions.

    Technical data:
    • Color : black liquid coating
    • Application temperature : 5°C to 35°C
    • Service Temperature : -20°C to 80°C
    • Touch Dry : 12 hours
    • Full Dry : 3 days
    • Coverage : 20 kg pail covers 67 m² @ 250 micron thickness
    • Packaging : 20 kg plastic pail
    Related Documents:

    How to Apply Hydrolastic Bp2000

    Hydrolastic BP2000 is a single component membrane applied cold by roller, trowel, brush or spray after crack, corner and joint pretreatment.

    1. Prepare the surface. The surface should be sound, clean, dry and free from loose material, efflorescence, laitance, curing compounds, dirt, oil, rust and grease. Concrete should be cured for at least 28 days with moisture content below 7%; remove deep contamination by grinding or grit captive blasting. Metal surfaces should be blasted or mechanically prepared to bright steel and coated directly.
    2. Pretreat cracks and corners. Fill shrinkage and non-moving cracks under 1.0 mm with a pretreatment strip of Hydrolastic BP2000 not less than 0.5 mm thick, extending 50 mm each side. Form 45° coving fillets at parapets and columns with Lavarep F40 and apply a 250 micron reinforcing strip extending 100 mm each side.
    3. Treat expansion joints. Seal expansion joints with Megaseal PU polyurethane sealant. Once cured, apply a 200 mm wide strip of Hydrolastic BP2000 centered over the joint, embed fiber mesh while wet, overcoat until fully covered and let it cure before further coats.
    4. Prime if needed. Well-prepared surfaces usually need no primer. On porous surfaces apply a coat of Hydrolastic BP2000 thinned 50% with water as a primer to reduce blisters from entrapped air.
    5. Mix. Mix the contents of the pail with a slow speed mixer to a homogeneous mix.
    6. Apply the coats. For wet areas apply a minimum of two coats to reach 500 micron dry film thickness. By roller or brush, apply the first coat at about 0.5 kg/m² and the second coat after the first cures at the same rate, preferably at 90 degrees. Embed woven fiberglass mesh strips between coats at cracks, joints and around pipes where extra protection is needed.
    7. Protect and finish. Do not leave the membrane exposed for long periods; once cured, apply protection sheets or screed mortar. For tiling, broadcast clean silica sand into the final wet coat and tile after full cure.
    8. Clean tools. Clean all tools with clean water before the product hardens. Hardened material can only be removed mechanically.

    Summary of the method in the Hydrolastic Bp2000 Technical Data Sheet. Always follow the full TDS on site.

    Standards & Test Methods

    StandardTitleReferenced for
    ASTM D412Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—TensionElongation (>2000%) and tensile strength (3.40 N/mm²)
    ASTM D624Standard Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic ElastomersTear resistance (8.1 N/mm²)
    ASTM D2240Standard Test Method for Rubber Property—Durometer HardnessShore A hardness (40)
    ASTM C836Standard Specification for High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane for Use with Separate Wearing CourseCrack bridging (>2 mm)
    ASTM D3746Standard Test Method for Impact Resistance of Bituminous Roofing SystemsImpact resistance (no effect)
    ASTM E96Standard Test Methods for Water Vapor Transmission of MaterialsWater vapor permeability (0.26 perms)
    ASTM D4541Standard Test Method for Pull-Off Strength of Coatings Using Portable Adhesion TestersAdhesion to concrete (>1.0 N/mm²)
    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
    BS 6949Specification for bitumen-based coatings for cold application, excluding use in contact with potable waterListed in the TDS

    Standards and test methods as referenced in the Hydrolastic Bp2000 Technical Data Sheet. Values in the TDS are typical laboratory results under standard conditions.

    Frequently Asked Questions

    What surfaces can Hydrolastic BP2000 be applied to?

    The TDS states excellent adhesion to most substrates including concrete, plaster, masonry, bituminous roofing felts, metal and asphalt coatings. It can also be used for retrofit roofing over torch applied membrane, EPDM, PVC, TPO, metal roofs, plywood and spray foam.

    How long does Hydrolastic BP2000 take to dry?

    Touch dry is 12 hours and full dry is 3 days. It may be applied to damp but not wet surfaces.

    How many coats of Hydrolastic BP2000 are needed in wet areas?

    For kitchens, bathrooms and other wet areas, apply a minimum of two coats to achieve 500 micron dry film thickness, each coat at approximately 0.5 kg/m² by roller or brush.

    What are the application and service temperatures of Hydrolastic BP2000?

    Application temperature is +5°C to +35°C. Service temperature is -20°C to +80°C.

    Can tiles be fixed over Hydrolastic BP2000?

    Yes, after the membrane is completely cured. Spread clean silica sand onto the final coat while it is still wet to give a mechanical key for the tile adhesive.

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