Mar-flex Waterproofing and Building Products is the leading innovator in modern waterproofing. The company has strove to advance the science of waterproofing since the mid 1980’s and has been very successful, introducing products like Geo-Mat Plus, the world’s first Green drainage board. Mar-flex developed a heavy duty waterproofing membrane that could stand up and surpass any of the competition’s products. This flagship product is popular all across the nation, and even internationally, and building professionals know it as Mar-flex 5000. 5000 is the product of years of research and development, and is made durable and versatile by design. This membrane can be applied to any poured foundation wall, and sprays on easily and predictably. Once it is applied, 5000 produces a viscous, flexible, and seamless seal that resists harsh weather conditions and seasonal changes. Find out for yourself why 5000 is Mar-flex’s most popular waterproofing membrane, and view our selection today!