Manhole Lining Systems Designed to Eliminate I&I Coatings Decoded

There are many manhole rehabilitation and lining solutions in the market today designed to resolve various sanitary sewer collection system problems. Most are designed for H2S protection, some focus on strength, however few are formulated with a balance to specifically abate inflow and infiltration (I/I) while also protecting against corrosion. Let’s explore the many types of applied liners used in manhole rehabilitation, including cementitious products, ultra-high build epoxies, polyurethanes, and polyureas. Each of these technologies have their strengths and weaknesses.