Qualipur 252 is a 2-component, low VOC, low/no odor, polyurethane membrane. It cures using chemical cross-linking to form a dynamically flexible waterproofing membrane for extreme crackbridging applications. Qualipur 252 has good chemical resistance and outstanding adhesion properties making it the ideal membrane for waterproof coating systems. High chemical abrasion and thermal shock resistant systems can be obtained using the Qualipur 252 as a base coat/membrane. Basic Uses: A crack-bridging base and waterproofing membrane.
Pre-mix the color component. Then, empty the contents of component “A” into component “B”. Mixing is accomplished by using a jiffy paddle and low speed drill (400 to 600 rpm). Take care not to incorporate excessive air into the product. Mix components for 2 minutes in provided pail. Scrape down sides of pail and mix for an additional 1.5 minutes before proceeding with application. Questions? Contact Us
Detail Coating – prior to applying the Qualipur base coat/waterproofing membrane apply a detail coat of Qualipur 252HV at 30 wet mils over all shrinkage cracks less than 1/16 in. Cracks wider than 1/16 in. should be treated as joints. Route out cracks to ¼ in. and fill with a urethane joint sealant. After the detail coat has cured for 3 to 4 hours, apply the Qualipur 252 base coat at the rate of 25 wet mils using a notched trowel or squeegee. Allow the base coat to cure 3 to 4 hours before overcoating. Once basecoat has cured, it can be topped with a variety of other Qualipur coatings and binders to form a waterproof parking deck and/or seamless flooring system.
Surfaces receiving an application of Qualipur 252 must be clean, sound, dry, free of oils and all bond inhibiting compounds and contaminants. Apply Qualipur 252 on primed concrete surfaces that have received the recommended surface preparation (such as sandblasting and shot blasting are recommended to produce a clean and lightly textured surface). Data Sheet