Engineer Plus URP 99 Waterproofing Chemicals, Packaging Size: 200 ML, Grade Standard: Analytical Grade Engineer Plus URP-99is based on modified styrene butadiene latex supplied as a ready to usebonding agent in liquid consistency. it is used for repair of spalled concrete –floors, columns, beams, chhajas, slabs. waterproofing of toilets & bathrooms, small terraces etc. it bonds strongly to old & new concrete and to plasters. it reduces shrinkage, prevents cracking, dust pick up & improves abrasion resistance.