Watergate Plus

WATERGATE PLUS

New Zealand's premium all-purpose, fire retardant wall wrap.

one wrap system
one wrap system

Watergate Plus is specifically designed as a wall underlay behind exterior wall cladding. Made from synthetic materials Watergate Plus is fire retardant, water resistant and vapour permeable. The water vapour transfer rate of the product has been optimised to minimise condensation risk in homes without compromising its primary water barrier properties.

Watergate Plus is part of the Thermakraft One Wrap System. Its unique construction allows for easier installation while maintaining best in class performance qualities.

Product Specifications

Watergate Plus comes in five roll sizes and two soffit roll sizes:

Product Code Width Length Coverage
WGP1370025 1370mm wide 18.5m long 25m2 coverage*
WGP1370050 1370mm wide 37.0m long 50m2 coverage*
WGP1370100 1370mm wide 73.0m long 100m2 coverage*
WGP2740050 2740mm wide 18.5m long 50m2 coverage*
WGP2740100 2740mm wide 36.5m long 100m2 coverage*

Soffit Roll Dimensions

Product Code Width Length Coverage
WGP6000025SOF 685mm 36.5m 25m2 coverage*
WGP6000050SOF 685mm 73m 50m2 coverage*

Custom branding available - Contact your Thermakraft representative for more details

*Note: M2 is the roll size for actual coverage, allow for laps and joins.


Product Description

Watergate Plus is a two-layer laminated wall underlay combining a Polyester non-woven layer with a high quality vapour permeable film. This allows water vapour to pass through from inside the wall cavity whilst water from the exterior is kept out.

The product is simply fixed to timber framing using construction staples and is made to stretch around corners providing a tight fit and reducing the risk of staple tear. It will provide temporary weather protection during construction. (Max 90 Days).


Scope of use

Watergate Plus can be used as a wall underlay on both residential and commercial buildings within the following scope:

  • With absorbent wall claddings (e.g. timber, brick or fibre cement) or non-absorbent wall claddings (e.g. metal or plastic).
  • Can be used with timber and steel framing, either directly fixed or in conjunction with an 18mm minimum drained cavity.
  • With masonry veneer in accordance with NZBC Acceptable Solution E2/AS1 and E2/AS4.
  • Situated in NZS3604 and NASH Building Wind Zones up to (and including) ‘Very High’ when used as a standalone flexible underlay, and “Extra High” when used as a flexible underlay over a rigid wall underlay.
  • Is suitable as an air barrier in unlined wall spaces.
  • Is suitable to be used in conjunction with thermal breaks on steel framed buildings.
  • Refer to BRANZ Appraisal No 695 (2017) and CodeMark Certificate BRANZ-CM-1002 for full details.

General

  • Fire retardant.
  • Unaffected by LOSP or other solvent based treated timber. However, LOSP or other solvent based treated timber must have sufficient time for the solvent to flash off in a well ventilated area. Recommended minimum 7 days.

Limitations

  • Must NOT be used as a roof underlay.
  • Must NOT be exposed to the weather or UV for more than 90 days.
  • Watergate Plus is NOT a vapour barrier.

Compliance

  • Watergate Plus has been appraised with the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 and E2/AS4, with regards to building height and floor plan area.
  • Watergate Plus has also been BRANZ appraised for use on buildings subject to specific weathertightness design. Building designers are responsible for the building design and for the incorporation of Watergate Plus into their design in accordance with the declared properties and the instructions of Thermakraft Ltd.

Flammability Index

  • Watergate Plus has been appraised with the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 and E2/AS4, with regards to building height and floor plan area.
  • Watergate Plus has also been BRANZ appraised for use on buildings subject to specific weathertightness design. Building designers are responsible for the building design and for the incorporation of Watergate Plus into their design in accordance with the declared properties and the instructions of Thermakraft Ltd.

Durability

Meets the Performance Requirements of NZBC Clauses B2, Durability (B2.3.1 (a) 50 years, B2.3.1 (b) 15 years and B2.3.2), E2 External Moisture (E2.3.2), and F2 Hazardous Building Materials F2.3.1, providing:

  • It is not damaged.
  • Installed in accordance with instruction guide.
  • Is not left exposed for more than 90 days.
  • Installed by or under guidance of Licensed Building Practitioners.
  • Is compatible with cladding system used.*

* Note: specifiers and product user must test for wall cladding system compatibility with the underlay before installation.


Product Warranty

Standard Thermakraft warranty applies. Refer to Thermakraft Warranty Statement for further details. This item is available online here or call 0800 806 595.


Product Performance

NZBC E2/AS1 Table 23 (NZ2295)Wall Underlay Properties Absorbency Vapour Resistance pH of Extract Shrinkage Water Resistance Air Resistance
Property Performance Requirement ≥ 100gsm ≤ 7MN.s/g ≥ 5.5 and ≤ 8 ≤ 0.5% ≥ 20mm ≥ 0.1 MN.s/m3
Property Performance Pass Pass Pass Pass Pass Can be used as an air barrier

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