Providing Structural Restoration & Waterproofing Services Since the 70's. At Polycrete, we have grown into a full service structural restoration and waterproofing company of choice by leading engineering consultants and discerning owners. Concrete Restoration and Repair Concrete Structural Repair Waterproofing Traffic deck coating Marine and harbour repairs Epoxy crack injection Concrete expansion joints Polycrete prides itself with providing quality work, on time and within budget.