StrandSarking has been appraised for use on buildings within the following scope:

• With timber roof framing designed in accordance with NZS 3604 or NZS 4229, or timber roof members subject to specific design; and,
• In NZS 3604 Wind Zones up to and including Extra High; and,
• Maximum eaves height of 10m above the ground; and,
• Snow loads up to 1kPa; and,
• Roof pitch of at least 10 degrees; and,
• With roof trusses or framing at maximum of 900mm centres; and,
• With roofing materials up to 150kg/m²

See BRANZ Appraisal 891 for full information.

Strandsarking has not been appraised for the following situations:

• As a diaphragm
• For flat roofs, decks, trafficable areas or roofs with a pitch of less than 10 degrees
• As a substrate for membrane roofs

Installation shall be carried out by a Viking Roofspec trained and licensed installer. Installation shall be undertaken in accordance with all relevant technical information related to the selected installation method, including information contained within the BRANZ Appraisal No. 891 (2015), BRANZ Appraisal No. 276 (2012) and Viking StrandSarking substrate checklist.

The product will, if employed in accordance with the supplier’s installation and maintenance requirements, assist with meeting the following provisions of the New Zealand Building Code (NZBC):

• Clause B1 Structure: Performance B1.3.1, B1.3.2 and B1.3.4. StrandSarking meets the requirements for loads arising from self-weight, gravity loads, temperature, snow, wind and creep (i.e. B1.3.3 (a), (b), (c), (g), (h) and (q)).
• Clause B2 Durability: Performance B2.3.1(b), 15 years. StrandSarking meets this requirement
• Clause F2 Hazardous Building Materials: Performance F2.3.1. StrandSarking meets this requirement and will not present a health hazard to people

See BRANZ Appraisal 891 for full information

• Viking Strandsarking is backed by a 15 year product warranty
• Solvent-free treatment — the azoles and permethrins used to protect the board against fungal decay and insect attack respectively, are water-based treatments, so no solvents are used. The preservatives used are organic biodegradable compounds.