Innovation built on experience

ProctorGeo Vap 120


ProctorGeo Vap120 is a light duty vapour retarder and convection barrier. The high air & water vapour resistance of the two-layer polyolefin non-woven membrane resists the flow of vapour by both diffusion and air movement through wall, ceiling and floor assemblies thus helping protect the building fabric and insulation from condensation and related problems such as mould, timber rot, corrosion and loss of thermal resistance.

When installed as a continuous layer, ProctorGeo Vap120 will help form an airtight layer reducing the loss of heated air or cooled air from the building thus improving the energy efficiency of the building enclosure.


Vapour retarders are typically used with sheet roof and wall claddings, in constructions located in cold climates, buildings with high internal humidity such as indoor swimming pools and museums, air-conditioned buildings located in hot and humid climates and refrigerated buildings such as cold stores and ice rinks.


A correctly specified and installed vapour retarder will reduce the volume of water vapour reaching cold surfaces. Users need to understand based on the climate location, building use and other factors, if and why a vapour retarder is required and that it is correctly located relative to the insulation.

Vapour retarders should not be used on the exterior side of insulation in cold and temperate climates as a sarking where there is a risk that condensation will form on the interior face of the retarder. Please contact Proctor Group Australia for advice on the suitable application of ProctorGeo Vap120.

ProctorGeo Vap120

Integrated Tape

To improve the integrity of installation, ProctorVap 120 is supplied with a factory applied integrated tape on both the outer face of the lower course and rear face of the upper membrane.

ProctorGeo Vap


Although ProctorGeo Vap120 can be used as temporary protection during construction, it can not be used as a primary waterproofing membrane. The product may be damaged by careless handling, high winds or vandalism, and should not be left uncovered for longer than is absolutely necessary. Any damaged areas should be replaced before completion.

Ensure that ProctorGeo Vap120 is covered as soon as possible, and not left exposed to UV for longer than 4 weeks. ProctorGeo Vap120 is not to be used in installations where it could be exposed to long term UV radiation.



  • Suitable for use in some corrosive environments
  • Ideal for swimming pools and humid buildings
  • Slightly translucent for ease of insulation
  • Highly water vapour resistant
  • High water resistance
  • Non-perforated
  • Non-conductive
  • Airtight
  • Lightweight and easy to handle
  • Excellent tear resistance
  • Factory applied integrated tape


Test Results
  Duty Classification  Table 1 AS/NZS 4200.1:1994  Light*
  Vapour Permeability  ASTM E96  0.02μg/N.s
  Vapour Resistance  ASTM E96  49MN.s/g
  Vapour Barrier Classification  ASTM E96  Medium
  Emittance  AS/NZS 4201.5  Non-reflective
  Water Barrier  AS/NZS 4201.4  High
  Absorbency  AS/NZS 4201.6  Unclassified
  Resistance to Dry De-Lamination  AS/NZ 4201.1  Pass
  Resistance to Wet De-Lamination  AS/NZ 4201.2  Pass
  Shrinkage  AS/NZ 4201.3  <± 0.5%
  Tensile Strength

  • Machine Direction (k/Nm)
  • Lateral Direction (k/Nm)
  AS 1301.448 

4.5 kN / m
3.1 kN / m

  Edge Tear Resistance

  • Machine Direction (k/Nm)
  • Lateral Direction (k/Nm)
  TAPPI T470  227 N
175 N
  Burst Strength  303 N
  Flammability Index  AS/NZ 1530 Part 2  ≤ 5**
* ProctorGeo Vap 120 is classified as light duty in accordance with the value specified for bursting strength.
** Testing to AS1530.2. has only been conducted on sections of material without integrated tape.
Air Tightness Testing
CriteriaReferenceTest Result
 Air PermeabilityEN 12114:2001<0.02 m3/h.m2.50Pa)

Standard Sizes & Packaging 

WidthLengthm2 per rollCoverage per rollWeight per rollRolls per pallet 



ApplicationProductWidth (mm)Length (m)
  Sealing joints and tearsProctorGeo Air Barrier Tape (single sided)6025
  Temporary adhesion to steel frameProctorGeo Duo tape (double sided)2450

Sample Specification

Vapour retarder should be ProctorGeo Vap120 vapour retardant membrane, tested to AS/NZS 4200,1:1994 standards, secured in accordance with product user guide.

Vapour resistance: No less than 40MNs/g
Duty classification: Light
Water Barrier Classification: High
Emmitance: Non-reflective
Flammability Index: Low
Notes: Non-conductive and not subject to corrosion