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Appraisal number: 656 (2020)

Date issued: 27 May 2020

Description

Viking Enviroclad is a single-ply, polyester fabric reinforced, thermoplastic polyolefin (TPO) waterproofing sheet membrane for flat or pitched roofs and decks. It can be applied as a fully bonded or mechanically fixed system.

Scope

Viking Enviroclad has been appraised as a roof and deck waterproofing membrane on buildings within the following scope:

  • The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1.
  • The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1 with respect to building height and maximum floor plan areas when subject to specific design.
  • With building structures designed and constructed to meet the requirements of the NZBC.
  • With substrates of plywood or concrete slab.
  • With minimum falls for roofs of 1:30 and decks of 1:40.
  • With decks that have a maximum area of 40 m².
  • Situated in NZS 3604 wind zones up to and including extra high.

Viking Enviroclad has also been appraised for use as a roof and deck waterproofing membrane on specifically designed buildings within the following scope:

  • Subject to specific structural and weathertightness design.
  • With substrates of plywood or concrete slab.
  • Situated in specific design wind pressures.
  • With the weathertightness design of junctions for each specific structure being the responsibility of the building designer.

Roofs and decks waterproofed with Viking Enviroclad must be designed and constructed in accordance with the following limitations:

  • Nominally flat or pitched roofs and decks constructed to drain water to gutters and drainage outlets complying with the NZBC.
  • With no steps within the deck level, no integral roof gardens and no downpipe direct discharge to the decks.
  • With the deck membrane continually protected from physical damage by a pedestal protection system or Viking Decoupling System.

The design and construction of the substrate and movement and control joints is specific to each building and therefore is the responsibility of the building designer and building contractor and is outside the scope of this Appraisal.

The membrane must be installed by Viking Roofspec licensed and trained installers.

Technical literature

  • VIK_ENV_001_PENEOUTL - Viking Enviroclad Penetration Outlet and Overflow
  • VIK_ENV_001A_PENEOUTL - Viking Enviroclad Penetration Outlet and Overflow Side Exit
  • VIK_ENV_002_PENEBALC - Viking Enviroclad Penetration_Balcony Drain 80 mm
  • VIK_ENV_002a_PENEBALC - Viking Enviroclad Penetration_Balcony Drain 100 mm
  • VIK_ENV_003_PENESUMP- Viking Enviroclad Penetration_ Sump Outlet With overflow
  • VIK_ENV_005a_HORIPIPE - Viking Enviroclad Penetration_Horizontal Pipe
  • VIK_ENV_006a_HORIDUCT - Viking Enviroclad Penetration_Horizontal Ducting Pipe
  • VIK_ENV_007_PENEFLUE -Viking Enviroclad Penetration_Flue or Oversize Pipe
  • VIK_ENV_010_PENETPO -Viking Enviroclad Penetration_TPO Pourable Pocket and Sealant
  • VIK_ENV_014_PENEACOU - Viking Enviroclad Penetration_Acoustic Mounting Block
  • VIK_ENV_020_VENTCAVI - Viking Enviroclad Ventilation Cavity
  • VIK_ENV_020a_VENTROOF - Viking Enviroclad Ventilation_Substrate Roof Vent For Concrete
  • VIK_ENV_021A_VENTPAPA -Viking Enviroclad Ventilation_ Cavity Vent At Parapet
  • VIK_ENV_041_PARASCUP - Viking Enviroclad Parapet_with Scupper Outlet
  • VIK_ENV_042_PARAOVER - Viking Enviroclad Parapet with overflow
  • VIK_ENV_051_GUTTWALL - Viking Enviroclad Internal Gutter to wall
  • VIK_ENV_072_RJUNGUTI- Viking Enviroclad Roof Junction Metal Roof to Internal Gutter
  • VIK_ENV_091_WINDTHRS -Viking Enviroclad Threshold_window

Consenting instructions

Always refer to the Appraisal in full and the technical literature.

Appraisal holder

Viking Roofspec, a division of Viking Group Ltd
Address:
Phone: 0800 729 799

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