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Wolfin Waterproofing Membrane

Premium Polyester PVC Sheet Membrane

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What is Wolfin Waterproofing Membrane?

The Australian Standard in Waterproofing

AS 4654.1 & AS 4858 Compliant

Engineered in Germany, Wolfin Waterproofing Systems is a premium single ply high polymer roofing & waterproofing sheet membrane that is environmentally friendly, recyclable and UV Stable.

Wolfin waterproofing membranes are available in two versions: Loose-Laid (IB) and Bonded (GWSK).

Wolfin membranes comply with the Australian Standard (AS 4654.1 – 2012) for waterproofing materials and Wolfin IB also complies to Australian Standard (AS 4858) for Internal and Wet Areas. The Wolfin System is designed to meet the AS4654.2 requirements.

The membranes are a unique combination of Polyester/PVC, which exhibit excellent characteristics including:

  • excellent chemical resistance
  • up to 350% elongation
  • bitumen compatible
  • root resistant-tested
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For more than five decades Wolfin membranes has counted among the leading manufacturers of waterproofing systems worldwide. The formulation has remained unchanged through this time & is regulated and monitored by external institutes to ensure it meets both European and Australian waterproofing standards.

The Wolfin Membrane system comprises of a single layer homogenous/uniform (non laminated) sheet membrane, combined with factory bonded steel profiles, cast in reglets, pre-made corners & PVC welding solvent to create “The Complete Waterproofing System”.

All Wolfin products are designed to meet the highest demands for buildings and provide maximum long-term water protection for the structure.  Wolfin has been used extensively in Australia since the late 1980’s and now covers millions of square metres in all climatic zones of our planet.

Wolfin Membrane Uses

  • Roofs (Exposed, ballasted, insulated)
  • Planter Boxes, Green Roofs & Landscaped Areas (FLL Certified)
  • Balconies, Decks & Terraces
  • Podium Slabs
  • Basements
  • Lift Pits
  • Potable Water Tanks
  • Detention, Retention, Header & Dump Tanks
  • and more…

Every Wolfin installation is inspected & signed off by Projex Group  (Wolfin Membranes Australia) resulting in a 15 years Single Point Warranty issued to the building owner on both Workmanship & Materials .

Finishes and Substrates

Wolfin polyester PVC waterproofing membranes are suitable for most applied finishes to be installed over them including:

Wolfin waterproofing membranes can be applied to most substrates including:

  • concrete
  • timber
  • steel
  • CFC
  • masonry blockwork
  • over damp substrates
  • etc…

All junctions & overlaps of the membrane are hot air welded, UV stable, suitable for recycling and have exceptional chemical resistance.

Wolfin Membrane Products

Wolfin IB

(unreinforced) 1.5 mm

  • Loose-laid polyester PVC sheet membrane
  • >300% elongation
  • Suitable for retaining walls, tanks, basements, lift pits, etc.
  • Can be installed over most existing membranes and building materials

Colours : light grey or black

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Wolfin GWSK waterproofing Membrane Black and Grey rolls

Wolfin GWSK

(reinforced, self-adhesive) 2.3mm

  • Premium bonded membrane with powerful, butyl-modified bitumen adhesive backing
  • Preferred waterproofing membranes for horizontal works in domestic, commercial and civil constructions
  • Suitable for roofs (exposed, green, insulated), podiums, balconies, planter boxes, etc.
  • Compatible with most materials and finishes
  • Asphalt toppings can be applied directly onto the membrane

Colours : light grey or black

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Wolfin System Components


  • Profiles are used to terminate & secure the membrane.
  • They are welded directly to the membrane & all fixings are encapsulated.
  • The Wolfinsteel Profiles are available in 5 standard shapes off the shelf or it can also be custom made as required.
  • The profiles are available in Light Grey or Black & can be painted if required.
  • 24 gge galvanised steel with 0.8 mm layer of Wolfin Membrane factory bonded to one side and available in 2m lengths.


  • This is the same as the Wolfinsteel but the steel used is 316L Low-Carbon Stainless Steel.
  • This variant of the Wolfinsteel is used where there are particularly severe corrosion/chemical issues.
  • The Stainless Steel Profiles are only offered in Black.


  • An extruded section of Wolfin IB, which is placed onto the formwork & cast into the concrete.
  • The AF6 is a cast in termination for the membrane which also acts as a waterstop.
  • Can be used in footings, hobs etc.


  • Preformed internal and external corners
  • Available in both grey and black


  • Universal structural fixing for roof mounting
  • Used to attach and support solar panels, hot water tanks, air conditioning units, etc.
  • Can be welded to both Wolfin and Cosmofin PVC membranes


  • The Universal Pins are the solution for fastening items directly to the Wolfin Membrane without piercing the membrane itself.
  • The pin has an 80mm diameter base plate, which is made of Wolfin membrane
  • It also has a protruding 25mm vertical threaded bar and locking nuts
  • Can be welded directly to any Wolfin membrane system.


  • The pre-made renovation floor drain outlets are supplied in two different sizes
    • To fit existing 70mm drain pipe (DN70)
    • To fit existing 100mm drain pipe (DN100)
  • Drain supplied with leaf stop and roll rings
  • Stainless Steel pipe length 300mm
  • Wolfin PVC membrane flange 350mm wide


  • The pre-made extension floor drain to suit outlets with a pipe diameter of 125mm
  • Drain supplied with leaf stop (no “O” ring)
  • Can be installed directly in core hole
  • Wolfin PVC membrane flange 350mm wide
  • Stainless Steel pipe length 300mm


  • The overflow drain is particularly well-suited to drain balconies and critical areas
  • Stainless Steel pipe length 500mm
  • Pipe diameter 50mm


  • The gravel stop cover can be installed on all our pre-made drains (DN70, DN100, DN125)
  • Is made of stainless steel
  • One Size Fits All – Trap Basket
  • Dimensions 195mm x 195mm x 38mm
Wolfin Polyester PVC Membrane cold-welded directly to PVC Pipe with THF


  • Tetrahydrafuran cold welding solvent, for cold welding membrane overlaps & membrane connections to PVC pipes.
Non-Slip Walkway to protect Wolfin Waterproofing Polyester PVC Membrane


  • Used to create safe walking paths
  • Non-slip solution hot air welded directly to the Wolfin & Cosmofin membrane
  • Adds extra protection to the membrane in high maintenance traffic areas
  • Colour: dark grey
  • Roll: 15m long x 1.06m wide


Benefits in using the Wolfin Waterproofing System:

  • Single Point Warranty (Labour & Materials)
  • AS 4654.1 and AS 4858 Compliant
  • Suitable for installation over most substrates
  • Free of Toxins and Heavy Metals
  • Superior Chemical Resistance
  • Only installed by Trained and Accredited Wolfin Applicators
  • Engineered in Germany
  • Complete Ancillary System
  • Plant Root Resistant – Certified Root Proof (FLL Tested & DIN EN 13948)
  • Hot Air Welded Overlaps/Connections
  • Service Temperature Range -25C – +85C
  • Can be applied directly over failed membranes incl. Bitumen
  • Suitable for New & Remedial Applications
  • Up to 350% Elongation
  • UV Stable-Suitable for Exposed Roofdecks
  • High Tear Strength
  • Proven Long-Life (> 30 years)
  • 100% Recyclable / Eco-friendly

Why Architects Prefer Wolfin

  1. Wolfin Waterproofing Membrane is the preferred trusted system to meet high standard designs and provide long-term protection to the structures.
  2. When specifying the Wolfin Waterproofing system, architects get access to the highest quality of service including design, specification, job specific detail drawings and on site support.
  3. Wolfin Membrane is only installed by Trained & Accredited Licensed Wolfin Applicators
  4. Wolfin Waterproofing system comes with an unrivalled single point warranty on both Labour and Materials issued by Wolfin Membranes Australia Pty Ltd.
  5. Every Wolfin installation is inspected and certified.
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Contact Projex Group Today!

Our commitment is to provide technical insights to ensure optimum solutions are achieved and meet the Australian Standards.

For technical support, advice, design and project consultations, please fill out the form below and one of our experienced technical team member will contact you to discuss your requirements.
Please fill out the form below to request a list of  licensed Wolfin applicators to carry out the installation of the Wolfin Waterproofing System to Australian standards.
Wolfin membranes are readily available within Australia and orders are processed and dispatched promptly. For further information, please contact Projex Group office.

Overview of the Australian Standards for Waterproofing

Projex Group Pty Ltd ensure the Design and Installation of Wolfin Waterproofing Membrane Meets the Australian Standard (AS 4654.1-2012 & AS 4654.2-2012)

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Balcony Waterproofing

The Projex Mission is to source and supply technically excellent products to meet the needs of owners, designers, insurers and operators of buildings and structures for specialist protection against water, industrial liquids, impact and corrosion risks.