ProctorPassive Rainscreen (RS-IT)

UV Resistant Vapour Permeable Sarking for Rainscreen Applications

Product Description

ProctorPassive™ Rainscreen with Integrated Tape (RS-IT) is a two layer membrane consisting of a spun bonded polyester layer with a unique functional coating that offers improved resistance against UV and high temperatures up to 120°C.

Developed primarily as a vapour permeable sarking for use in open joint rain screen applications, ProctorPassive RS-IT offers a combination of durability and high water holdout without compromising vapour permeance.


ProctorPassive RS-IT is suitable for installation in vertical wall constructions behind ventilated facades with regularly spaced open joints no greater than 30mm wide accounting for no more than 30% of total surface area. The rainscreen façade must be ventilated according to the façade manufacturers installation instructions but a ventilation gap (min. 20mm) is necessary.

Long term UV resistance is dependent on the percentage of the cladding that is open, the size of openings, and the width of the cavity. Please contact Proctor Group Australia to seek assurances on the suitability of ProctorPassive RS-IT for the particular application.


ProctorPassive RS-IT should be installed in accordance with AS/NZS 4200.2 Pliable Building Membranes and Underlays, Part 2 Installation Requirements and in full accordance with the product installation guide. ProctorPassive RS-IT should be installed with the darker black “rubbery” surface facing outwards

ProctorWrap RS-IT Roll

Integrated Tape

To improve the integrity of installation, ProctorPassive RS-IT is supplied with a factory applied integrated tape on the outer face of the lower course and the rear of the upper course of membrane.


Although ProctorPassive RS-IT 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. To ensure maximum long term UV durability, ensure that ProctorPassive RS-IT is covered up by the primary cladding material as soon as possible, and not left exposed to UV for longer than 4 months.


  • High water resistance
  • Suitable for use behind in open joint cladding
  • High UV durability
  • Highly vapour permeable
  • Air tight
  • Supplied with integrated tape
  • AS4200.1:2017 testing and compliance

Sample Specification

Wall wrap should be ProctorPassive Rainscreen RS-IT (with integrated tape) UV resistant vapour permeable sarking membrane, compliant to AS/NZS 4200.1:2017, secured directly to the outside of the wall frame in accordance with product user guide.

AS4200.1:2017 Classifications:

  • Duty – Light Wall
  • Water Control – Water Barrier
  • Vapour Control – Class 4 Vapour Permeable,
  • AS1530.2 Flammability Index  ≤ 5
  • Air Control – Air barrier
  • Electrical Conductivity – Non conductive
  • Emissivity – Non reflective
  • Vapour Permeance to ASTM E96(B) no less than 2.5µg/N.s
  • Thickness <1.0mm


“Breather” perforated foil does not comply with this specification. For use in open joint rain screen applications,  open joints must be no greater than 50mm wide accounting for no more than 30% open total surface area.   Available from DCTech/Proctor Group Australia. W:

Health and Safety

Information on any known health risks on the material are listed in the Material Safety Data Sheets available from Proctor Group Australia. Follow all guidance and industry good practice guidelines. In particular pay attention to the disposal of the removed release liner, as this presents a slip hazard.

Product Performance

ProctorPassive RS-IT performs to specification in normal building applications when installed in accordance with the Product Installation Guide. The information herein is supplied in good faith and to the best of our knowledge was accurate at the time of publication. Users are advised to make their own determination as to the suitability of this information in relation to their particular purpose and specific requirements.

Dimensions and Accessories

Product CodeWidth (mm)Length (m)Area (m²)Coverage (m²)Weight kg/rollRolls/pallet
ProctorPassive RS-IT1,5003552.547.2516.546/pallet
ProctorPassive UV Tape6025   12/carton
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ProctorWrap RS-IT Install Image
Installation Guide
Installation Guide

ProctorPassive RS-IT Installation Guide June 2021 ProctorPassive RS-IT Installation Guide referenced by New Zealand Codemark.