EFI USA vs GSE Environmental (Solmax)

EFI USA and GSE Environmental (now Solmax) serve different roles in the geosynthetic industry. GSE/Solmax is primarily a geomembrane manufacturer that produces liner materials. EFI USA is a full-service installation contractor with 30+ years of field experience, in-house fabrication, integrated biogas capabilities, and nationwide field crews. If you need materials manufactured, GSE/Solmax is a supplier. If you need a complete containment solution designed, fabricated, installed, and maintained, EFI USA is the contractor.

Effectively, yes. Solmax acquired GSE Environmental in December 2017, and GSE now exists as a Solmax product brand rather than as a separate company. Solmax is headquartered in Longueuil, Quebec, and focuses on manufacturing geosynthetic liner products; GSE Environmental was previously headquartered in Houston, Texas. They are a materials supplier, not a field installation contractor. EFI USA purchases materials from various manufacturers including Solmax and installs complete containment systems with its own field crews.

GSE Environmental (Solmax) is primarily a geomembrane manufacturer, not an installation contractor. They produce the raw liner materials that contractors like EFI USA install. EFI USA maintains its own nationwide field crews, manages every phase of installation from site prep through final QA testing, and provides post-install monitoring and O&M support. This distinction between manufacturer and installer is critical when selecting a project partner.

Buying liner material from a manufacturer is only one piece of a containment project. A full-service installer like EFI USA handles engineering, fabrication, installation, QA testing, and post-install support under a single contract. This single-source accountability eliminates the coordination risk of managing separate material suppliers, fabricators, and installation subcontractors. EFI's 30+ years of field data also informs better material selection for your specific application and conditions.

Yes. EFI USA is material-agnostic and works with geomembranes from all major manufacturers including Solmax (formerly GSE), Agru, Layfield, and others. EFI's three in-house fabrication facilities can process HDPE, LLDPE, PVC, and RPP from any qualified manufacturer. This flexibility ensures the best material is selected for each project based on performance requirements, not supplier relationships.