Manholes may be out of sight, but they should never be out of mind. Aging infrastructure means deteriorating manholes, and if left unchecked, minor issues can snowball into costly failures. The good news? Advancements in sealing, lining and reinforcement techniques are making it easier than ever to extend manhole life without full replacement.
Key Trends in Manhole Rehab
✅ Spray-Applied Liners – Modern epoxy, polyurethane and geopolymer coatings create a seamless barrier against corrosion, extending service life with minimal disruption.
✅ Modular Lining Systems – Prefabricated inserts or cured-in-place (CIP) linings offer a quick, durable solution for heavily deteriorated structures.
✅ Advanced Composite Resins – Lightweight and highly resistant to chemicals, these materials reinforce manholes without adding excessive weight or bulk.
✅ HDPE and PVC Inserts – Corrosion-proof plastic liners provide long-term protection against hydrogen sulfide and other aggressive sewer gases.
Why It Matters
Preventive manhole rehab isn't just about avoiding expensive failures — it helps municipalities reduce I&I, extend the life of existing infrastructure, and improve system efficiency. With these modern solutions, aging manholes can get a second life before they become a major headache.
