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Enviroclad (TPO) Waterproofing Membrane

Viking Enviroclad offers absolute watertight integrity for low-slope roofs. It is a TPO (thermoplastic polyolefin) waterproofing membrane rendering all the necessary attributes of a world-class system, from waterproofing to aesthetic and environmental elements.

Viking Enviroclad has been a proven performer. It has been tried and tested both internationally and locally, having been installed on thousands of buildings and homes across New Zealand and the Pacific Islands since 2007.

Viking Enviroclad is not just a membrane, it is a 'system'. It is not complete without its compatible adhesives, sealants and proprietary weldable accessories; all internationally lab-tested, proven and supplied by the one manufacturer in the USA.

Roofs with an air conditioning unit, tricky corners, or pipe penetrations are the areas most prone to potential leaks if not managed properly. Viking Enviroclad's heat-weldable accessories have been developed to ensure water tightness in these vulnerable areas. These accessories range from heat-weldable internal and external corner flashings, to self-sealing pourable pockets to create a watertight finish around penetrations.

Key Features
  • Colour options: Grey, White, Mansard Brown, Patina Green, Rock Brown, Medium Bronze, and Slate Grey
  • Thousands of installations in New Zealand and the Pacific Islands
  • Installed only by Viking Licensed Applicators
  • Formulated to suit a wide range of climatic conditions
  • UV resistant
  • Water potability certified
  • Heat-reflectivity
  • Heat-weldable
  • Custom-made accessories
  • Wide rolls (up to 3.66m) — fewer seams
  • Long rolls – (30.4m)
  • 20 year product warranty
  • CodeMark Certified (Certificate No. 30058)
  • BRANZ Appraised (Appraisal No. 656)
NZ-Owned Business
NZ-Owned Business
Scope of Use

Viking Enviroclad Roofing and Deck Membrane System has been assessed as a roof and deck waterproofing membrane on buildings within the following scope:

  • the scope limitations of NZS 3604:2011 and NZBC Acceptable Solution E2/AS1, paragraph 1.1; or,
  • the scope limitations of NZBC Acceptable Solution E2/AS1, paragraph 1.1 with regards to building height and floor plan area when subject to specific structural design; and,
  • situated in NZS 3604:2011 Wind Zones, up to, and including Extra High; and,
  • with substrates of plywood or suspended concrete slab

Viking Enviroclad Roofing and Deck Membrane System has also been assessed for use as a roof and deck waterproofing membrane on specifically designed or existing buildings within the following scope:

  • subject to specific structural and weathertightness design situated in wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.7 kPa; and,
  • with substrates of plywood or suspended concrete slab
  • with the weathertightness design of junctions for each specific structure being the responsibility of the building designer
Limitations on Use
  • The system must be installed by a Viking Roofspec Trained and Approved Installer
Statement of Building Code Compliance
  • Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2 and B1.3.4 (b) (c) (d) (e) for the relevant physical conditions of B1.3.3 (a), (c), (e), (h), (m) and (p) Viking Enviroclad Roofing and Deck Membrane System meets this requirement.
  • Clause B2 DURABILITY: Performance B2.3.1 (b) and B2.3.2 (a), 15 years. Viking Enviroclad Roofing and Deck Membrane System meets this requirement.
  • Clause E2 EXTERNAL MOISTURE: Performance E2.3.1, E2.3.2 and E2.3.7 (b) and (c). Viking Enviroclad Roofing and Deck Membrane System meets these requirements.
  • Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Viking Enviroclad Roofing and Deck Membrane System meets this requirement and will not present a health hazard to people.
In-Service History

Enviroclad has been installed on over 2,300 buildings and homes including the likes of Fonterra, Courier Post, and the Ministry of Justice buildings.

Other Performance Attributes
  • Enviroclad is backed by a 20-year product warranty and for specific projects, may be an eligible membrane for Viking's Full System Warranty, which covers the product and installation in one document;
  • BRANZ Appraised (no. 656, 2015);
  • 100% recycling of off-cuts during manufacturing process;
  • Enviroclad is 100% recyclable at the end of its usable life due to the absence of chlorinators and plasticisers;
  • Enviroclad can be installed over existing membranes meaning no dumping of the old roof
  • UV resistant
  • Water potability certified
B1 Structure compliant
B2 Durability compliant
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
BRANZ Appraised
BRANZ Appraised
Enviroclad PTS
Data Sheet: Enviroclad Membrane
Membrane Protection Sheet
Viking Products Material Safety Data Sheets


Accreditation: Potable Water Testing
BRANZ Appraisal 656

656 [2020]

CodeMark Certificate


Maintenance Instructions
Viking Roofspec Full System Warranty
Alternative Substrate Fixing Specification (Rhinobond)
Masterspec Specification Clause
Find an Approved Installer
Substrate Checklist — Plywood
Substrate Checklist — Strandsarking
Substrate Checklist: Concrete
Brochure: Viking Enviroclad


Additional Information
Case Study: ASB Civic Centre, Marlborough
Case Study: Dual System on Lifestyle Home
Case Study: Hybrid Solution for Nursing Home
Case Study: Keeping Water Out of the Bank
Case Study: Protecting Staff and Pupils
Case Study: Te Kuiti Post Office
Case Study: Watertight Finish for Apartments
Case Study: Watertight Infinity Pool
CAD/PDF Details
Enviroclad Details Full Set
Viking Buzon Details Full Set
Viking Roof Garden Details Full Set
Viking WarmSpan Details Full Set

For over 50 years, Viking Roofspec have supplied roofing and waterproofing materials, and combining leading-edge function with design flair to keep water out — for good.

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