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Waterproofing PVC Membrane | Cosmofin

Supplier: Projex Group

Cosmofin (previously known as Delifol) is a high-polymer, soft PVC membrane system manufactured in Germany. The sheet edges are closed - without capillaries. The membrane is 1.5 mm thick and the standard colour is light grey.

Price Guide: POA

PVC Membrane Cosmofin

What is Cosmofin

Cosmofin (previously Known As Delifol) Is A High-polymer, Soft PVC Membrane System Manufactured In Germany. The Sheet Edges Are Closed - Without Capillaries. The Membrane Is 1.5 Mm Thick And The Standard Colour Is Light Grey.

Cosmofin membrane is manufactured by extrusion, not by the calandar method. This production method is critical to reducing short and long term shrinkage.


  • Hot Air Weldable
  • Thermoplastically Deformable
  • Solvent Weldable
  • Safe Against Plant Roots
  • Low Shrinkage
  • Free of Toxins or Heavy Metals
  • Can be strip bonded
  • Recyclable
  • Safe in Permanently Wet Areas
  • Acid / Alkali Resistant
  • Micro-organism Resistant
  • UV Stable

Where Can It Be Laid

  • Exposed to the Australian region weather
  • Ballasted
  • Fully-bonded
  • Loose Laid

All laying methods incorporate Cosmofin Steel for positive fixation and efficient flashings.

System Components

Cosmofin FG

The standard reinforced Cosmofin membrane, 1.5 mm thick, light grey, with the side edges sealed beyond the reinforcement. The rolls are 1.1 metres wide x 20 metres long. COSMOFIN FG is reinforced with polyester fibre - set diagonally so that the membrane retains structural elasticity.

Cosmofin GGV

GGV is Cosmofin FG backed with polyester fleece. Can be laid over bitumen. Can be used together with Terokal 325 to give a bonded membrane to most surfaces.

Cosmofin F

Unreinforced membrane, 1.5 mm thick. This is used for detailing and closer strips. The rolls are 1100 mm wide x 20 metres long.

THF (tetrahydrafurane)

Welding solvent

Cosmofin Liquid

Used to seal laps where reinforcement ends are exposed. It is supplied in 1 litre tins.

Cosmofin  steel Profiles

Standard profiles (see Installation) are available from stock, used for mechanically fixed terminations and fixing at the bases of up stands. Other profiles are available to special order.

Bonding Adhesive

Use Terokal 325 with GGV or Terokal 914 with FG.


120mm wide self- adhesive tape used to seal Cosmofin to wall where render to be applied over.


120mm wide self-adhesive tape used to seal Cosmofin to the wall. Should only used in balcony or garden bed or small terrace situations. To be used in conjunction with Terokal 914 adhesive.


The adhesive to bond Cosmofin GGV to almost any substrate.

To view more information on PVC membrane Cosmofin contact us.