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GT Membrane 500

We offer a range of impermeable liners for wrapping modular water storage units/blocks, creating a watertight barrier to prevent storm water from filtering and saturating the surrounding ground.

GT Membrane 500 is a standard impermeable geomembrane used for standard ‘attenuation tank’ applications in SUDS.

The membrane is completely wrapped around the modular water storage tanks to make them watertight, then the whole tank together with the membrane is wrapped with a protection fleece geotextile to prevent the membrane being punctured.

Specification guide

This geomembrane is a standard impermeable membrane used for standard “Attenuation Tank” applications in SUDS. The membrane is completely wrapped around the modular water storage tanks to make them watertight, then the whole tank together with the membrane is wrapped with a protection fleece geotextile to prevent the membrane being punctured.

Please note that for higher risk applications a thicker geomembrane is usually required, however this is usually specified by the client.

Resistance to Water and Water Vapour

The Geomembranes and methods of jointing provide an effective barrier to the passage of liquid water and water vapour from the ground.

Procedure

Adjacent sheets should be overlapped by at least 150mm and should be bound with jointing tape. Double sided and single sided tape is available on request from sales office.

Chemical Resistance

Resistant to attack by inorganic acids, alkalis and salt solution which cause corrosion to metals and dilute solutions of detergent or bleaches.

Resistance to UV Light

Does not have UV stabilisation therefore not recommended for long periods of exposure to sunlight. Weathering will not occur when installed in accordance with geotechnical engineer’s instructions.

Resistance to Puncturing

Has a high standard of resistance when used in accordance with suitable protection layer which should be specified by and engineer on site. Care should be taken to avoid damage during storage, handling and installation.

GT Membrane 500 Specification

  Properties Results
  Thickness (microns) 500
  Mass (g/m2 460
Tensile strength (N/25mm) >180
(Mp) >14.4
Elongation at Break Unaged (%) >500
Ageing at 56 days at 80 oC (%) >250
Tear Resistance (N) >20
(N/mm) >40
Impact strength Body (F50,g) >1000
Fold (F50,g) >500
Durability - effective operational temperature range (oC) 25-60
  Colour Black
  Roll size (m) 4 x 12.5
  Material Polyethylene
Related case study

Ornamental Pond at Fallow Park

Fallow Park is an exclusive housing development on the outskirts of Cannock. The rural setting of the development and close proximity to Hawks Green Nature Reserve influenced the design and installation of shared recreation areas on the site.

 

A 1400m2 ornamental pond with green space was designed to enhance the development and provide a habitat for a variety of wildlife.The ground conditions and nature of the finished pond meant that an impermeable membrane would be required to line the pond.

Jessup Brothers

Jessup Brothers

Read the full Case Study