Restore Structural
Integrity.
Without Replacement.
Deteriorated manholes are a direct path for groundwater infiltration, hydrogen sulfide corrosion, and structural failure. Rehabilitation restores the structure, stops inflow, and extends service life — at a fraction of the cost of full replacement.
Common Manhole Defects
Most municipal manhole deterioration follows predictable patterns: hydrogen sulfide corrosion of the cone and barrel, cracked or displaced brick and block, infiltration at joints and frame connections, and spalled concrete exposing aggregate or rebar. Left untreated, each failure mode compounds the others.
We assess each structure using NASSCO MACP condition coding before recommending a rehabilitation method. The condition report travels with the project and is included in your final closeout package.
Cementitious & Polymer
Lining Systems
We apply cementitious mortar and spray-applied polymer lining systems depending on the degree of corrosion and the structural condition of the host. Polymer systems provide superior chemical resistance in high-H2S environments; cementitious systems are appropriate for structures with intact substrate requiring corrosion protection and infiltration sealing.
Frame and cover adjustments, channel rehabilitation, and bench reconstruction are performed as part of the same mobilization where scope permits.
Related Services
Deteriorating Manholes in Your System?
We can walk through your CCTV footage or inspection records and give you a straight answer on what's rehabable and what isn't.
(661) 654-9724