Geomembrane Lining – Our Scope and Range of Materials

We operate throughout the UK, Ireland, Europe and Internationally via our specialist lining division: Butek Landline

We’ve recently completed geomembrane lining projects as far afield as The Ascension Islands in the mid Atlantic Ocean and The Maldives.

We have a variety of specialist equipment that allows us to fabricate a wide range of liners and membranes. Our technicians are fully trained for on site working, or we can produce panels in our extensive factory premises on supply only basis. All products manufactured by the company are fully welded, tested and guaranteed in accordance with our ISO 9001 quality standards.

Further information, case studies and chemical resistance charts and spec sheets for all of our materials can be found on our Butek Landline site. We can produce a wide range of flexible fabricated components from any of the materials mentioned below.

Please contact us for further information, to discuss your design or for a quotation.

Butyl Rubber

The original geomembrane liner suitable for water, water soluble chemicals and most acids and alkalis due to its elasticity. It is ideal where movement or settlement may occur, for confined space applications or for low temperature use (-30C). Butyl rubber is a multi-ply smooth surfaced material and has an expected lifetime of around 50 years. A number of thicknesses are available from 0.75mm to 3.00mm in both plain and reinforced versions. Many of our Butyl rubbers are approved for use with drinking water (WRAS Certified) and for use in building projects (BBA approval).

Applications: Tank Lining, Wildlife Pond & Lake Lining, Reservoir Lining, Reservoir Covers, Reservoir Baffle Curtains, Self Supporting Tanks, Roofing & Decking, Contaminated Land Covers.

Resistances: Water, Acids, Alkalis, Gases.

Image right: Duthie Park Butyl rubber lining works, Aberdeen

Polyurethane (PU)

Polyurethane is a specialist membrane normally used as a nylon reinforced material. Polyurethane sheets have special properties useful in containing potable waters, oils and fuels. Ideal for tank lining. Materials can be supplied with a ‘PU‘ coating on the working side only. PU is available in a limited range of colours, as some pigments can affect the chemical resistances of the material. A number of thicknesses are available from 0.75mm to 1.50mm.

Applications: Tank lining, Reservoir lining, Reservoir covers and baffle curtains, Self supporting tanks.

Resistances: Oils and fuels.

Image Left: PU fuel bladders at a remote airfield in South Sudan & colour variation for flexible bladders.

Poly Vinyl Chloride (PVC)

PVC is a low cost membrane suitable for some short life applications in ‘plain’ or Nylon reinforced form for special applications. ‘PVC‘ sheets can be produced in a wide variety of specifications in a range of thicknesses, from 0.20mm to 3.00mm in plain (foil) form and 0.50mm to 2.00mm in reinforced form. Some PVCs are approved for drinking water use.

Applications: Tank lining, Wildlife Pond & Lake lining, Groundsheets, Self supporting tanks, Roofing & Decking, Lorry Curtains & Tarpaulins.

Resistances: Water, Alkalis.

Image: Leigh Valley Canoe Slalom Course

Ethylene Propylene Diene Monomer (EPDM)

EPDM rubber is a synthetic rubber (as is Butyl rubber) but with a wide variation of formulations. Many of these formulations are not weldable and some are toxic to wildlife. There are however also EPDM membranes that are approved for drinking water use (WRAS approved) and can be fully vulcanised.

We only work with the latter versions, which are available in a wide variety of thicknesses, both plain (foil) and reinforced.

Material thicknesses are 0.75mm to 2.50mm

Applications: Tank lining, Reservoir lining, Self supporting tanks, Roofing & Decking.

Resistances: Water, Acids, Alkalis

Image: EPDM lining works carried out at Engine Arm Aquaduct, W.Midlands

Polypropylene (PP)

Polypropylene is a good lining material normally used in nylon reinforced form for tank lining, reservoir lining, reservoir covers and reservoir baffle curtains. Polypropylene sheets have a good range of chemical resistance including some petrochemicals.

As part of our range we have a DWI (Drinking Water Inspectorate) approved Polypropylene suitable for drinking water reservoir baffle curtains.

Material thickness available between 0.75mm to 2.00mm.

Applications: Tank lining, Wildlife Pond & Lake lining, Reservoir lining, Reservoir Covers and Baffle Curtains, Groundsheets, Self supporting tanks, Roofing & Decking, Contaminated land covers, Lorry curtains & Tarpaulins.

Resistances: Water, Oils, Acids, Alkalis.

Image: Large reservoir for purified process water, Power Plant, Ireland


Elvaloy is a specially developed oil & fuel resistant plastic material. It is used for projects that include both primary and secondary containment of most petrochemicals, oils and fuels. Elvaloy is used extensively for secondary containment as a bund liner, where its flexibility and extremely good weathering properties excel. Standard available thickness is 0.90mm to 1.14mm.

Applications: Bund Lining, Tank lining, Groundsheets, Secondary Containment Berms, Contaminated Land Covers, Lorry Curtains & Tarpaulins.

Resistances: Water, Oils and Fuels.

Image: Secondary containment berm for fuel storage

Polyethylene (PE)

Polyethylene plastic sheets are available in a range of densities with variable flexibilities: LLDPE, LDPE, MDPE and HDPE. PE is an economic geomembrane suitable for large projects where its good overall chemical resistance is an advantage, i.e. landfill lining, reservoir lining. Material thicknesses range from 0.50mm to 3.00mm.

Applications: Tank lining, Wildlife Pond & Lake lining, Reservoir lining, Contaminated Land Covers, Slurry Lagoon Lining, Gas Membranes.

Resistances: Water, Oils, Acids, Alkalis.

Image: Irrigation reservoir lining installation in progress