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BiForm Forest Board
Description

Created using the same successful board composition as the FORM 130 and FORM 140, BiForm now offer a board that is specifically engineered for surface fixing only. It has been formulated especially for Australian and New Zealand high UV conditions and has been extensively tested by the Building Research Association of New Zealand (BRANZ), thus holding a BRANZ Appraisal.

Key Features
  • Dimensions: 138mm x 20mm x 4850mm
  • Cover: 143mm (Including a 5mm gap)
  • Lineal m per m²: 7.0m
  • Max joist spacings: 400mm
  • Screws required per m² with max joist spacing – 28
  • Load testing result: 4kPa
  • Available in two colours: FOREST Brown & FOREST Slate
Categories
Decking
NZ-Owned Business
NZ-Owned Business
Recycled Content (Pre-Consumer)
Pre-Consumer Recycled Content
Scope of Use

This 138mm x 20mm board will be more appropriate for, but not limited to residential outdoor decking options, as well as commercial applications where suited. This profile is most commonly used on forest walkways, as a part of the Kauri Dieback programme.

Limitations on Use

When being used to form any part of an access route to the main entrance of a building, the BiForms composite decking surface must be coated with an appropriate non-slip coating. 

BiForm Ltd have had testing completed with a coating, meeting the requirements of AS/NZS 3661, and achieved a slip resistance in excess of 0.4. BiForm Ltd have also had testing completed without a coating to the Oil-Wet Ramp test method contained in AS 4856, which is an alternative solution. The decking achieved a slip resistance classification of R11 for both the smooth and grooved sides.

Statement of Building Code Compliance

In the opinion of BRANZ, if it is designed, used, installed, and maintained in accordance with the statements and conditions of Appraisal No. 680 (2015), BiForm's WPC Decking will meet the following provisions of the NZBC:

  • Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2, & B1.3.4. BiForm's WPC Decking meets the requirements of loads arising from self-weight, imposed loads, and impact [i.e. B1 3.3 (a), (b), (j)]
  • Clause B2 DURABILITY: Performance B2.3.1 (b) 15 years. BiForm's WPC Decking meets this requirement.
  • Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Biform's WPC Decking meets this requirement and will not present a health hazard to people.

Biform's WPC Decking has been appraised as an alternative solution in terms of New Zealand Building Code compliance.

In-Service History

BiForm's composite has been on the NZ market since 2008. Since it’s introduction, it has been installed in various different settings including residential houses and apartments, schools, marinas, restaurants and retirement villages.

Other Performance Attributes

BiForm Ltd have had testing completed with a coating, meeting the requirements of AS/NZS 3661, and achieved a slip resistance in excess of 0.4. BiForm Ltd have also had testing completed without a coating to the Oil-Wet Ramp test method contained in AS 4856, which is an alternative solution. The decking achieved a slip resistance classification of R11 for both the smooth and grooved sides.

B1 Structure compliant
Structure
B2 Durability compliant
Durability
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
BRANZ Appraised
BRANZ Appraised
Test Results
Test Results
Documents
Product Technical Statement
Material Safety Data Sheet
Accreditation — Fire Testing
BRANZ Appraisal 680

No. 680 [2015] (amended May 2019)

Maintenance Instructions
Warranty
Installation and Operation
Brochure
BiForm Composite Decking Brochure

BiForm offer a sustainable, low maintenance decking material, which is suitable for all kinds of decks. We also offer a Stack N Pack Joist mount system and outdoor composite screening.

Product Enquiries

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