New Zealand: Fletcher Materials has said that it has been able to strengthen its insulation business in both New Zealand and Australia due to improvements in service and relative cost position in the six months to 31 December 2016, following site closures at its Fletcher Insulation business. Overall, operating earnings before significant items for its Building Materials lines, including plasterboard and insulation products, rose by 10% year-on-year to US$38m from US$34.4m.