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Dynex Cavity Closers - Standard Range

A new range of uPVC cavity closers designed for use on drained cavities behind the exterior cladding and meet the requirements of NZBC Acceptable Solution E2/AS1 paragraph

Dynex Cavity Closers come in a range of sizes:

  • 20mm Closer
  • 25mm Raked Roof Closer
  • 30mm Closer
  • 35mm Closer
  • 40/50mm (Adjustable) Closer
Key Features
  • Made in New Zealand
  • High quality UV stabilised uPVC material
  • 100% recyclable
  • All closers have innovative batten locator
  • BRANZ Appraised
NZ Made
NZ Made
Scope of Use

Dynex cavity closers can be used in conjunction with wall cladding systems on timber and steel framed buildings within the following scope:

  • The scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area; and,
  • With cavity-based weatherboard, fibre cement sheet, External Insulation and Finishing Systems [EIFS], stucco and plywood wall cladding systems complying with NZBC Acceptable Solution E2/AS1 or with any proprietary cavity-based cladding system covered by a current BRANZ Appraisal or CodeMark Certification; and,
  • Situated in NZS 3604 Wind Zones up to, and including Extra High and specific design wind pressures up to and including design differential ultimate limit state (ULS) 2.5 kPa.
Limitations on Use

Dynex cavity closers have been designed for use in accordance with NZBC Acceptable Solution E2/AS1, Paragraph Any use outside this scope must only be undertaken once approval has been sought and granted from the manufacturer in writing.

NZS 3604 Wind Zone Extra High suitable
Extra High Wind Zone
NZS 3604 Wind Zone Specific Design suitable
Specific Design Wind Zone
Statement of Building Code Compliance
  • Dynex Cavity closers meet the durability requirements of NZBC Clause B2, Performance B2.3.1 (b) 15 years and B2.3.2.
  • Dynex Cavity Closers are a range of extruded uPVC and polymer based flashings designed to meet the requirements of E2/AS1 and are made in New Zealand.
  • Dynex Cavity Closers are covered by BRANZ Appraisal No. 911 (2016).
Other Performance Attributes

Any painting of the cavity closers must ensure that the ventilation openings are not covered or compromised in size.

B2 Durability compliant
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
BRANZ Appraised
BRANZ Appraised
CAD/PDF (link to page on supplier website)
Independent Appraisal (BRANZ)

Dynex deliver innovative, durable and attractive building solutions that make building and maintenance more cost-effective, while minimising any impact on the environment.

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