CERATEX ENGINEERING, KELBROOKCERATEX ENGINEERING, KELBROOKCERATEX ENGINEERING, KELBROOKROCHESTER ROOF BEFOREROCHESTER ROOF BEFOREROCHESTER ROOF AFTERROCHESTER ROOF AFTERTOLWORTH HOSPITAL BEFORETOLWORTH HOSPITAL BEFORE Waterproof Membranes Fast setting, spray applied two component pure polyurea coating offering seamless waterproof membranes and secondary containment for bonded areas.