ProctorPassive SmartVap 100

Our intelligent air barrier with variable vapour diffusion resistance. Used internally for maximum vapour control. Ideal for passivhaus applications.

ProctorPassive SmartVap 100

Product Description

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

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.


When installed as an internal 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.

Associated Tape

ProctorPassive AB Tape is a single-sided pliable polyethylene tape made with an aggressive, moisture-resistant polyacrylate pressure-sensitive adhesive with superior ageing resistance.