ProctorPassive Rainscreen (RS-IT)

A highly UV stable, vapour permeable wall membrane for open joint rain screen applications

Product Overview

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 Rainscreen RS-IT offers a combination of durability and high water holdout without compromising vapour permeance.

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Technical Properties

Vapour PermeabilityASTM E962.7800 ug/N.s
Vapour ResistanceASTM E960.36MN.s/g
Tensile Strength MDAS 1301.448MD:6.6kN/m, CD:3.7kN/m
Edge tear ResistanceTAPPI T470MD:337N, CD:191N
ThicknessEN 1849.20.5mm
FlammabilityAS 1530.2Low (≤5)*
Water BarrierAS/NZS 4201.4High
Air Control ClassificationAS/NZS 4200.1:2017Air Barrier
Resistance to Dry and Wet DelaminationAS/NZS 4201.2 AND 4201.3Pass
ShrinkageAS/NZS 4201.3< ±0.5%
UV Stability4 months (120 days)
*Testing to AS1530.2 has only been conducted on sections of material without integrated tape


ProctorPassive Rainscreen RS-IT is suitable for installation in vertical wall constructions behind ventilated facades with regularly spaced open joints no greater than 50mm wide accounting for no more than 30% of total surface area.

ProctorPassive Rainscreen RS-IT should be installed with the darker black “rubbery” surface facing outwards.

Key Features & Advantages

  • 120 (4 months) UV Exposure
  • High water resistance
  • Suitable for use behind in open joint cladding
  • High UV durability
  • High vapour permeable
  • Air tight
  • Supplied with factory applied integrated tape
  • Compatible with SabreSeal MS Facade and SabreBond SMP50

Available Sizes


Roll Width1.5m
Roll Lengths35m
Weight per roll16.5kg