PREDL GmbH
About
PREDL GmbH, operating under the brand PREDL Austria, manufactures plastic manhole rehabilitation and new-build solutions from its production facility in Bonitz, Germany, with over 20 years of specialization in wastewater manhole systems. The company claims one of Europe's largest and most versatile manhole base production operations, centered on PP/GRP base-liners (Schachtboden) that protect concrete manholes from corrosion, chemical attack, and surface deterioration in wastewater environments. Their FLEXLINER system represents a trenchless rehabilitation breakthrough: a POLYUREA-based lining that can be folded for insertion through existing manhole openings and then unfolded to its original dimensions inside the manhole base, eliminating excavation and significantly reducing infrastructure downtime. For new construction, the DUPLEX-Schacht offers a complete PP/PE plastic manhole system, while the DUPLEX Hybrid Manhole combines the DUPLEX system with precast concrete bases featuring monolithically cast-in PREDL base-liners and plastic lining extending to the first joint. PREDL's GFK Paneele (GRP panels) provide glass fiber reinforced polyester panels for trenchless rehabilitation of large wastewater structures and custom specialty orders. Additional products include Corprotect GRP corrosion protection linings for shielding concrete from hydrogen sulfide attack, Infra-manhole systems for infrastructure access, Multro GRP manhole ring sections, drop structures (Gefällebaresetzungen) for managing elevation changes, and connection bells for sealed pipe-to-manhole transitions. The company has expanded into the US market through Predl USA and offers a franchise model for international expansion, serving wastewater utilities, stormwater management agencies, and manhole rehabilitation contractors.
Key Products
PP/GRP synthetic protective linings for concrete manhole bases, providing corrosion and chemical resistance to extend manhole service life in wastewater environments.
POLYUREA-based manhole rehabilitation system that folds for insertion through existing openings and unfolds inside the manhole, enabling 100% trenchless rehabilitation without excavation and reducing infrastructure downtime.
Complete PP/PE plastic manhole system for new construction, providing a fully corrosion-resistant alternative to traditional concrete manholes in wastewater applications.
Combined manhole system pairing the DUPLEX plastic manhole with precast concrete bases that have monolithically cast-in PREDL base-liners and plastic lining, offering structural strength with corrosion protection.
GRP-based corrosion protection lining system for manhole interiors, shielding concrete surfaces from hydrogen sulfide attack and acidic wastewater environments.
Infrastructure manhole system designed for underground utility access in transportation and public works applications.
GRP manhole ring sections for building or rehabilitating manhole shafts with corrosion-resistant plastic components.
Engineered drop structures for managing elevation changes within manhole systems, controlling flow energy and preventing erosion at pipe transitions.
Transition fittings for connecting pipes to manhole bases, providing sealed and structurally sound pipe-to-manhole interfaces.
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