Maxseal FLEX-M – Premium Flexible Waterproof Coating (Positive & Negative Pressure)
One-Component Cement-Based Waterproofing System for Concrete & Masonry
Maxseal FLEX-M is a high-performance, one-component flexible waterproofing mortar designed to provide long-lasting protection for concrete and masonry structures exposed to both positive and negative water pressure. Once mixed with water, it forms a durable, fully flexible coating that bonds strongly to damp surfaces and delivers exceptional waterproofing even under the most extreme conditions.
At The Waterproof Supplier, we stock and supply Maxseal FLEX-M because it is one of the most versatile and reliable waterproofing systems available in Australia. It is widely trusted by professional waterproofers, builders, plumbers, civil contractors, and infrastructure specialists who require a product that performs consistently in demanding environments.
Formulated for superior crack-bridging, Maxseal FLEX-M creates a seamless, protective membrane capable of absorbing structural movement while maintaining full waterproof integrity. It is ideal for potable water structures, below-grade waterproofing, retaining walls, tanks, balconies, basements, and any surface requiring long-term moisture protection. With outstanding adhesion, resistance to UV exposure, salts, carbonation, chlorine, wastewater chemicals, and aggressive groundwater, Maxseal FLEX-M delivers durability where traditional coatings fail.
Unlike many membrane systems, Maxseal FLEX-M can be applied directly onto wet substrates, requires no primer, and is fully non-toxic — making it safe for drinking water applications and confined job sites with limited ventilation. Its advanced breathability allows vapour to escape without compromising waterproofing performance, and its abrasion resistance provides exceptional longevity in harsh environments.
Maxseal FLEX-M meets AS4654, has been CSIRO tested, and offers outstanding performance against water ingress, making it suitable for residential, commercial, industrial, civil, and infrastructure projects. Whether you are waterproofing a basement wall under hydrostatic pressure, lining a retaining wall, sealing a water tank, or protecting concrete from carbonation and corrosion, Maxseal FLEX-M provides a proven, long-term solution backed by global engineering standards.
At The Waterproof Supplier, we deliver this product fresh, fast, and with expert guidance so your project gets done right the first time. Our customers trust us for professional waterproofing materials, competitive pricing, and technical support for applications large and small.
