Engineered wood products (EWPs) are used extensively in construction overseas and are gaining increased interest in NZ. The aim of this survey is to gain insight into structural EWPs from those in the NZ construction industry who are using these materials. The survey results will also be used to inform current BRANZ research which is investigating the long-term durability of structural adhesives used in EWPs.

In the context of this survey an EWP is defined as either a laminated product (strips of wood laminated together) or structural insulated panels, i.e. the following products:
  • Cross-laminated timber (CLT): large-scale prefabricated solid wood panels produced by stacking layers of kiln-dried lumber boards bonded with adhesive
  • Laminated veneer lumber (LVL): structural composite lumber produced by bonding thin wood veneers together with adhesive
  • Glued laminated timber (Glulam): structural timber produced by bonding layers of dimensioned timber together with adhesive
  • Structural insulated panels (SIPs): composite panels composed of an insulating foam core sandwiched between two structural facings which may be made of wood or other materials. The core and facings may or may not be bonded together with adhesive.
The information provided by you will be reported anonymously as part of the research project. However, if you would be happy to be contacted for any follow-up queries after the survey closes, there is an option to provide your contact details. All participants who complete the survey before 20 December 2018 are eligible to go into a draw to receive one of five $100 Prezzy cards. The draw will be made on 31 January 2019.
Thank you very much for your participation - it is really appreciated!