HDPE & LLDPE liners (geomembranes).

Choose the polymer and the specification together

High-density polyethylene (HDPE) and linear low-density polyethylene (LLDPE) offer different mechanical responses. Selection considers the contained liquid, temperature, exposure, deformation, protection and installation conditions. GM13 and GM17 establish manufacturing quality-control requirements; project suitability is assessed alongside them.

Blown film, flat die and custom roll dimensions

We can source blown-film and flat-die geomembranes, with custom widths and lengths to suit the panel layout, handling equipment and delivery plan. SpecLinerHD currently uses blown film as its standard route, with flat die available by request.

Usable width, roll length, mass, minimum quantities and production programme are confirmed for the selected grade and manufacturing line. The finished sheet and its supporting test data determine acceptance.

Smooth, textured and coloured liner options

Source the surface around its function. Options include smooth sheet; single-sided or double-sided texture; embossed or structured textures; and other techniques such as co-extruded or spray-on texturing. Each offered construction requires its own product data.

• Interface stability: assess the actual soil, geotextile and liner combination. Texture height alone does not establish design friction.
• White and coloured surfaces: consider solar heating, wrinkle management, inspection, appearance and the proposed exposure. Confirm pigmentation and layer-specific durability data.
• Specialist constructions: conductive layers and other options can be investigated where the leak-location method or project specification calls for them.

Cardboard or weatherproof plastic cores

Customise the roll core to suit storage, lifting equipment and site handling. Cardboard and plastic cores are available. Plastic cores are weatherproof and recyclable through a suitable plastics recycler, subject to local acceptance and contamination limits.

Confirm the core material, internal diameter, wall thickness, roll mass and lifting arrangement with the order. Keep cardboard cores dry and store all rolls securely, protected from mechanical damage.

ConcreteLockPE: weld the liner to a cast-in concrete profile

ConcreteLockPE is Kontain’s polyethylene concrete embedment profile, supplied from Inno. Its anchor ribs are cast into fresh concrete, leaving the flat polyethylene face exposed. The installer then extrusion-welds the compatible HDPE liner to that face, forming the designed liner-to-concrete connection.

Use it at concrete walls, channels, sumps, pits and other liner terminations where a cast-in weldable connection is required. Position and restrain the profile before the pour, consolidate concrete around the ribs and keep the weld face clean. Prepare and qualify the extrusion weld under the project procedure.

• Dimensions are based on the supplied Inno profile diagram; confirm tolerances and the order drawing before manufacture.
• Profile joints, corners, concrete embedment, weld compatibility, movement and loads require project detailing. No pull-out capacity or pressure rating is declared here. The profile is a separate accessory; the geomembrane’s GM13 requirements do not certify the profile.

A clear route to higher specification containment

For demanding applications, Kontain helps define and source enhanced stress-crack resistance, antioxidant performance and exposure-specific testing. Requirements can include an agreed SP-NCTL stress-crack value, initial and retained OIT or HP-OIT, and evidence for the exact formulation.

We assess the offered grade against the complete project specification. Enhanced index properties alone do not establish service life, chemical compatibility or compliance with another specification such as GM42.

Liner supply with design inputs and installation quotes

Bring the liner, protection and drainage layers into one coordinated material package. Kontain can provide liner selection services, anchor-trench and ballasting drawings, panel and interface inputs, drainage assessment and installation quotation coordination.

We review long-term allowable geocomposite drainage capacity against predicted inflow or leakage, using the project loads, gradients, boundary materials and reduction factors. The lining assessment also addresses the project’s allowable leakage criteria. Final scope and responsibilities are agreed with the project team.

Responsive sourcing and application-specific warranty options

Send the specification, quantity and required delivery date for a prompt sourcing review. We coordinate material options, production, freight and documentation, with availability and programme confirmed in the quotation.

Available product warranties are reviewed for the intended application and stated in the agreed supply terms. Where installation is quoted, its workmanship warranty and responsibilities are identified separately. The quotation makes the covered material, conditions and exclusions clear.

Practical questions