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Important Heritage Tray update for Installers & Specifiers

04 August 2021

Dimond Roofing offers a range of tray products, including our popular Heritage Tray® profile.

The use of Heritage Tray has grown in recent years for both cladding and roofing applications. Its elegant lines, economic performance, and flexibility have made it a favoured choice. As its popularity has grown, we have seen it used in a wide range of locations, including areas with extreme wind conditions.

To ensure Heritage Tray performs consistently in New Zealand’s uniquely challenging environment, we are introducing some key changes to our Heritage Tray offer. These changes are effective from 4th August and retroactively include all existing quotes. To avoid any doubt, the proposed changes are not in response to any concerns about Heritage Tray’s performance with respect to weather tightness or wind uplift performance. We are confident in the performance of, and stand behind, all existing installations of Heritage Tray.

Key changes for Specifiers:

  • All Heritage Tray projects require Dimond’s CAD Flashing details to be used (available on this website) and each project will be reviewed by the Dimond Technical Team for suitability based on location. Please contact the team on 0800 ROOFSPEC to discuss specific project requirements.
  • Tyvek Metal vented underlay is now required to be specified with Heritage Tray in all wind zones. In Extra High or Specific Engineering Design (SED) wind zones or areas that may experience these conditions from time to time, Heritage Tray will now require the specification of an additional plywood substrate and Tyvek Metal underlay, subject to review by Dimond (via the Technical Team) on a case by case basis. Our Eurotray® range of products may also be appropriate in these applications.
  • Dimond also now requires that in all wind zones, clip fasteners are specified to be fixed to all ribs of all purlin lines (or girt/dwang lines for walling).
  • Swages are now a requirement for the Heritage Tray profile, and Dimond will no longer supply non-swaged Heritage Tray.
  • Heritage Tray will no longer be available as an option for the Tricore Insulated roof system.

Key changes for Installers:

  • All Heritage Tray jobs must now be viewed by the Dimond Technical Team (0800 ROOFSPEC). Your Sales Representative or local Branch team will step you through this process.
  • All Heritage Tray jobs must be installed using Dimond Flashing CAD details, which are available on this website.
  • Tyvek Metal vented underlay is now required to be used with Heritage Tray in all wind zones. In Extra High or Specific Engineering Design (SED) wind zones or areas that may experience these conditions from time to time, Heritage Tray will now require the use of an additional plywood substrate and Tyvek Metal underlay, subject to review by Dimond (via the Technical Team) on a case by case basis. Our Eurotray® range of products may also be appropriate in these applications.
  • Additionally, Dimond now requires customers to purchase the specified Tyvek Metal underlay as part of any Heritage Tray order, for both roofing and cladding. In some instances, customers may wish to provide their own underlay (Tyvek Metal or otherwise). This is subject to Dimond approval on a case by case basis.
  • Dimond also now requires that in all wind zones when installing Heritage Tray, clips must be fixed to all ribs of all purlin lines (or girt/dwang lines for walling).
  • Swages are now a compulsory requirement for the Heritage Tray profile, and Dimond will no longer supply non-swaged Heritage Tray.
  • Heritage Tray will no longer be available as an option for the Tricore Insulated roof system.

We appreciate these changes may inconvenience some customers and acknowledge we have introduced additional costs into the Heritage Tray system. While unfortunate, we view this as necessary to ensure our products are installed and perform to the highest standards. Dimond stands behinds its products, our valued installer base and end-users. Our commitment is only possible due to the continuous development of our products and systems.

Our technical literature has been updated, please visit our Heritage Tray page to view these.

Please note, we cannot be responsible for the performance of our products (including Heritage Tray) when our details and/or installation instructions have not been followed.

If you have any questions or queries, please don’t hesitate to contact us on 0800 ROOFSPEC (0800 766 377) or contact me directly.

Kind regards,

Mike Klemick
National Specification Manager
mike.klemick@fletchersteel.co.nz
027 575 3076

Customer Supply Update June 2021