Start with a standard or heavy composite base. Add a laminate or polymer modification where needed. Custom combinations require a confirmed construction and property schedule.
GCL-S · Needle-punched sodium-bentonite liner
Kontain GCL Standard
Conventional containment using a nonwoven cover and woven carrier. Select for the actual liquid chemistry, confinement and installation conditions.
- Reference dry bentonite
- ≥3,700 g/m²
- Construction
- PP nonwoven / bentonite / PP woven
- Long edges
- Factory-treated, self-sealing under confinement
The reference grade contains at least 3,700 g/m² dry granular bentonite. Powdered bentonite and other masses can be specified with a separate property schedule.
GCL-H · Woven/nonwoven composite base
Kontain GCL Heavy
A reinforced carrier with an additional nonwoven layer for more demanding installation conditions and assessed granular-fill contact.
- Reference dry bentonite
- ≥4,000 g/m²
- Composite carrier
- Woven reinforcement + nonwoven protection
- Static puncture reference
- ≥2,500 N; grade-specific installation checks
Available with 3,700 or 4,000 g/m² dry bentonite. The reference schedule below is the 4,000 g/m² construction; confirm a separate schedule for the 3,700 g/m² option.
GCL-L · PE barrier over the selected GCL base
Kontain GCL Laminated
An integral polymer barrier to reduce direct exposure from the covered face and help manage moisture loss and wetting–drying effects. Retain confinement and the specified GCL sealing detail.
- PE laminate options
- 0.2 / 0.5 mm
- Base construction
- Standard or heavy GCL
- Joints
- Approved overlaps with continuous confinement
Specify 0.2 or 0.5 mm PE laminate with the selected standard or heavy GCL base. Confirm the supplied grade and approved overlap detail before ordering.
GCL-P · Polymer-modified bentonite for assessed chemistry
Kontain GCL Polymer
A formulation option for saline water, aggressive cover-soil leachate and process liquids where conventional sodium bentonite needs additional compatibility assessment.
- Reference bentonite
- ≥3,700 g/m² dry polymer-modified powder
- Selection
- Representative liquid and hydration testing
- Custom combinations
- Heavy base and laminate, subject to qualification
The reference construction uses polymer-modified bentonite powder in a standard reinforced GCL. Heavy-base and laminated combinations require their own confirmed construction and compatibility schedule.
