04/2011 DURABILITY FLOW CHART Roof Cavity CLOSED Dry, internal location, not subject to airborne salts or rain wetting Cladding Wall Cavity SHELTERED Open to airborne salts, but not rain washed Vented Subfloor Sheet Decking EXPOSED Open to airborne salts and rain washed Open Subfloor Slat Decking DURABILITY FLOW CHART ZONE ENVIRONMENT GANG-NAIL / LUMBERLOK Zones B and C Closed Refer NZS 3604:2011 Fig 4.2 GANG-NAIL / LUMBERLOK Closed Refer NZS 3604:2011 Fig 4.2 Standard Zinc Coated Steel Product Sheltered LUMBERLOK / BOWMAC and Type 304 Exposed Stainless Steel Product Zones B and C Sheltered Refer NZS 3604:2011 Fig 4.2 and Exposed Sheltered Sheltered and Exposed Sheltered and Exposed Standard Zinc Coated Steel Product Hot Dip Galvanised Steel Product Type 304 Stainless Steel Product Standard Zinc Coated Steel Product Zones D Product Key TREATMENT Post base supports beam / post / strap refer NZS 3604 Sect Fixings ABOVE 600mm from ground level for piles and poles Fixings BELOW 600mm from ground level for piles and poles For structural timber fixings specifically external decks BOWMAC Hot Dip Galvanised Steel Product LUMBERLOK Hot Dip Galvanised Steel Product LUMBERLOK Type 304 Stainless Steel Product LUMBERLOK Type 304 Stainless Steel Product .. .DURABILITY FLOW CHART ZONE ENVIRONMENT GANG-NAIL / LUMBERLOK Zones B and C Closed Refer NZS 3604:2011 Fig