Enviroseal ProctorWrap Black Label


Enviroseal ProctorWrap Black Label (BL) 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 underlay for use under solar panels and in open joint rain screen applications, Enviroseal ProctorWrap Black Label offers a combination of durability and high water holdout without compromising vapour permeability.

Enviroseal ProctorWrap Black Label will help protect the building fabric and insulation from condensation and related problems such as mould, timber rot, corrosion and loss of thermal resistance. Unlike foil products, the high water vapour permeability of Enviroseal ProctorWrap Black Label allows for the controlled escape of water vapour from within the building whilst offering effective protection against wind driven rain, snow and dust for the lifetime of the building even in corrosive coastal environments.


  • Vapour permeable building wrap for behind open joint rain screen cladding's
  • Vapour permeable roofing underlay under solar panels
  • On treated timber

Key Features

  • High vapour permeability
  • Complaint with AS/NZS 4200.1
  • High resistant to UV
  • Strong, yet lightweight for ease of use
  • Mould resistant
  • Resistant against chemical impregnation's, rot and mould

ProctorWrap Black Label Print/PDF

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Enviroseal ProctorWrap HT-R 
is available exclusively from 
CSR Bradford 1300 850 305


Proctor Black Label Construction Membrane



 Technical data

Criteria   Reference   Result
Duty Classification Table 1 AS/NZS 4200.1:1994 Light*
Vapour Permeability ASTM E96 2.8μg/N.s

Vapour Resistance 

ASTM E96 0.36MN.s/g
Vapour Barrier Classification ASTM E96 Low
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 (kN/m)
  • Lateral Direction (kN/m)
 AS 1301.448


6.6 kN/m
3.7 kN/m

Edge Tear Resistance 

  • Machine Direction (N)
  • Lateral Direction (N)


337 N 
191 N

Burst Strength    480 N
Flammability Index   AS/NZ 1530 Part 2   ≤ 5**

Allowable UV exposure prior to completion of cladding

   4 months 

*Enviroseal ProctorWrap BL is classified as light duty in accordance with the value specified for bursting strength and therefore does not meet the deemed-to-satisfy provisions for use in roof applications.

**Testing to AS1530.2. has only been conducted on sections of material without integrated tape.


Standard Sizes & Packaging 

Width  Length mper roll  Weight per roll
 1500mm  50m  75 m2   23.5kg

Enviroseal™ ProctorWrap™ Tape Range

When required to secure, join or seal Enviroseal™ ProctorWrap™ BL it is recommended to use the following
Enviroseal ProctorWrap accessory products in each of these applications.

Application  Products  Width Length
Sealing around penetrations ProctorWrapTM SLS Flexi 60mm 5m
Sealing joins - Black Label only ProctorWrapTM SLS Black Label Tape 60mm 25m


 Sample specification


Sarking should be Enviroseal™ ProctorWrap™ BL vapour permeable membrane, tested to AS/NZS4200,1:1994 standards, secured directly to the outside of the wall frame at maximum 300mm spacing and in accordance with product user guide. All laps and penetrations are sealed with Enviroseal™ ProctorWrap™ SLS Black Label Tape. Breather foil does not comply with this specification.

Summary Specification:

  • Vapour permeability: No less than 2.5μg/N.s 
    (vapour resistance of no greater than 0.4MNs/g)
  • Machine Direction Tensile Strength no less than 5.0kN/m
  • Duty classification: Light
  • Water Barrier Classification: High
  • Emmitance: Non-reflective











PH: 1800 174 900 



Proctor Group Australia


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