Proctor SmartVap 100 Air barrier with variable vapour diffusion resistance

Product Description

ProctorPassive SmartVap 100 (SmartVap) is a two layer AS4200.1 compliant light duty air barrier and variable vapour diffusion resistance retarder.


When installed as a continuous layer, SmartVap will form an air tight layer, improving the efficacy of ventilation systems and thermal efficiency of the building enclosure. The effective management of air and vapour passage through wall, ceiling and floor assemblies can help protect the building fabric and insulation from condensation and related problems such as mould, timber rot, corrosion and loss of thermal resistance.

SmartVap should not be used on the exterior side of insulation in cold and temperate climates as an alternative to a vapour permeable sarking, where there is a risk that condensation will form on the interior face of the retarder.

Variable vapour diffusion resistance

The functional layer of SmartVap is a polyamide film. Such films passively adjust vapour diffusion resistance depending on the humidity where located. The polyamide absorbs water vapour from the air, opening the molecular pores thus adjusting vapour diffusion resistance according to ambient humidity conditions.


  • Air tight
  • Fire Retardant (FR Index: ≤5)
  • Semi-translucent for ease of installation
  • Variable water vapour diffusion resistance
  • High water resistance
  • Non perforated
  • Non conductive
  • Lightweight and easy to handle
  • AS/NZS 4200.1 testing and compliance

Roll size

1500mm wide x 30m (45m²) Weight per roll: 5.5kg

Roll Size

Roll Width 1500mm
Roll Lengths 30m
Coverage 45m²


Property Standard Value
Vapour Permeability ASTM E96 (Procedure B) 0.55 ug/N.s
Vapour Resistance ASTM E96 (Procedure B) 1.83 MN.s/g
Air Control Classification AS/NZS 4200 (ISO 5636.5) Air Barrier (≥0.1 MN s/m³)
Water Barrier AS/NZS 4201.4 High
Tensile Strength MD AS 1301.448 MD:2.5kN/m, CD:1.9kN/m
Edge tear Resistance TAPPI T470 MD:134N, CD:104N
Flammability AS 1530.2 Low (≤5)*
Resistance to Dry and Wet Delamination AS/NZS 4201.2 AND 4201.3 Pass
Shrinkage AS/NZS 4201.3 < ±0.5%

European Air tightness & Vapour Resistance Testing

  • Air Permeability (EN12114:2001): <0.02m³/(h.m².50Pa)
  • Vapour Resistance (EN 1931 B Dry Cup 23°C RH75%): 10.5 MNs/g
  • Vapour Resistance (EN 12572 (A) Dry Cup 23°C RH50%): 11.25 MNs/g
  • Vapour Resistance (EN12572 (C) Wet Cup 23°C RH93/50%): 1.15 MNs/g

Sd value range for film: 0.15m to 5m