TUFFLEX? · TUFFLEX What is it? Eco-friendly polyurethane resin - uses water as a curing agent (up to 40%) No toluene, No organic thinner, No heavy metals, No formaldehyde, No odor Catalyst can be added (up to 0.3%) to shorten curing time Can be applied on damp surface Once mixed with water, it cures far below zero degree Celsius Unlimited thickness with one application Used for waterproofing of ..