Stongard from Stonhard is a product line that consists of waterproofing and decking membrane products formulated to address moisture issues in mechanical equipment rooms and indoor spaces. Stongard MR protects mechanical equipment rooms and indoor spaces that cannot tolerate moisture. Stongard MD is also a waterproofing solution, but adds a focus on style to meet specific design expectations, the company says. Stongard MX includes a fiberglass reinforcement, where specified, to satisfy spaces requiring positive side moisture protection. All are abrasion. crack and slip resistant, according to Stonhard.