Manhole Rehabilitation

Infiltration: Midwest Trenchless Technologies can stop infiltration into manholes using multiple techniques:

• Injection grout sealing
• Chemical resistant/fibrous cement coating
• Polyurea lining (partial or full structure)
• Combinations of all three

Chimneys: Midwest Trenchless Technologies can reconstruct existing chimneys or replace rings and castings. Midwest Trenchless Technologies has several means of stopping chimney infiltration:

• CRR (chimney repair with use of cement)
• Polyurea coating
• New rings
• New castings
• Rain disks
• Internal and external rubber seals

Floors: Midwest Trenchless Technologies can repair or fully replace existing manhole floors that have cracked or deteriorated.

Hydrogen Sulfide Protection: Via polyurea lining

Polyurea Lining: "The Ultimate in Manhole Liners"

• Polyurea offers complete gas protection by forming a completely seamless liner. When used in conjunction with a thin layer strong seal cement it can be used to greatly increase structural integrity. Polyurea has excellent adhesion on prepared surfaces while allowing up to 700% elasticity so it won’t crack from shifting like cement or epoxy.
• Typical lining completed is less than 5/8" thick.