Skip to main content

Appraisal number: 680 (2015)

Date issued: 21 Dec 2015

Biform Solid Composite Decking


Biform Solid Composite Decking is a wood/plastic composite (WPC) decking for timber-framed decks. The decking is available in three options - FORM 130, FORM 140 and Forest Board.


Biform Solid Composite Decking has been appraised for use as an alternative exterior decking material for decks designed and constructed in accordance with NZS 3604.

The FORM 140 size of Biform Solid Composite Decking has also been appraised as exterior decking when used on decks subject to a specific engineering design.

Technical literature

  • Biform Installation Information, version 5, September 2017
  • Biform Care & Maintenance Guide, version 3, September 2017
  • Biform Forest Board Installation Information, version 3, November 2019

Consenting instructions

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

Appraisal holder

Biform Ltd
Phone: 0800 449 274

Marketer details