The function of the Weatherboard Starter / Cavity Closer is to provide support and the correct starter angle for the first course of weatherboard, prevent vermin intrusion, and to promote weather-tightness by allowing drainage and air ventilation to dry the cavity should moisture breach the external cladding. The Redway range of uPVC Weatherboard Starters have been designed to provide the ideal solution for architects, builders and installers to meet these requirements. Redway Weatherboard Starters / Cavity Closers are available at all leading building merchants nationwide.

  • Category
    Roof Flashings & Cappings
  • Range
    Weatherboard Cavity Closers
  • BRANZ Appraised (Australia 980)
  • UV stabilised PVC as required by BCA
  • Lightweight for easy transportation and installation
  • Biologically and chemically resistant to treated materials
  • Colour - Grey
  • Model Name - Cant Strip (Starter Strip) for Weatherboard
  • Model Number - RDCS47
  • Material - uPVC
Weatherboard Closer

Redway has designed a top and bottom Cavity Closer from extruded uPVC to be used in either a Drained Cavity wall or Ventilated Cavity wall situation.

  • A drained cavity wall is vented at the bottom only. Water is able to drain and limited (but often sufficient) air is able to enter the cavity to dry remaining moisture between wetting cycles.
    Products required: Redway Weatherboard Starter/Cavity Closer.
  • A ventilated cavity wall is vented at the top and bottom. As per the drained cavity, the bottom vent allows drainage and air entry. This method should be considered when drying is inhibited due to rapid wetting cycles or where walls are permanently shaded as they pose a higher risk of moisture build up and mould formation. An example detail of the ventilated cavity is illustrated on the right.
    Products required: Redway Weatherboard Starter/Cavity Closer and Redway Top Vent Closer.
Where to Buy

Bunnings Warehouse

We have a range of products that are stocked in Australia and can be purchased through Bunnings. Additional products are warehoused in our NZ location but available upon request to Australia.

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Masons provide a range of quality trade building products from a complete Enclosure Building Wrap System and Exterior Cladding, to Brick Reinforcement, and are a crucial supplier in the New Zealand building industry.

Masons strive to be at the forefront of developing innovative products that raise the standards of New Zealand building products.