Description

Strandsarking is an engineered woodpanel sheet material treated to Hazard Class H3.1 for use as a roof sarking under membrane roofs.

Scope

1.  Strandsarking has been appraised for use on buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area; and,
• with a minimum roof pitch of 2°; and,
• with internal gutters with a minimum fall of 1:100 and with no cross seams in the sheet membrane; and,
• with timber roof framing designed in accordance with NZS 3604, or timber roof members subject to specific design; and,
• with roof framing at a maximum of 600 mm centres; and,
• in NZS 3604 Wind Zones up to, and including, Extra High; and,
• with membrane roofing systems in accordance with NZBC Acceptable Solution E2/AS1 or systems covered by a valid BRANZ Appraisal, subject to the approval of the membrane supplier.

2.  Strandsarking has not been appraised for the following situations:

• as a diaphragm; or,
• on roofs less than 2° pitch; or,
• in internal gutters installed with a liquid-applied membrane; or,
• on decks; or,
• in trafficable areas.