Towards durable timber structures
A new BRANZ project aims to help improve the durability of timber structures by deepening understanding of the part moisture dynamics plays within timber.
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A new BRANZ project aims to help improve the durability of timber structures by deepening understanding of the part moisture dynamics plays within timber.
Although timber treatments protect timber, they can corrode nails, screws and other hardware used in building. A BRANZ research project is investigating the effects of different treatments on some common types of metal fasteners.
As interest in engineered wood products grows in New Zealand, a BRANZ survey examined why and how building professionals are using this modern technology and what future use may be.
BRANZ’s timber structures durability work has seen sawn sapwood and heartwood timber exposed to the weather in various locations. The next stage is applying knowledge gained to engineered wood-based materials.
A project examining use of polyurethane adhesives for laminated structural timber elements in local conditions has shown acceptable performance.
BRANZ and the University of Auckland are conducting research into the durability of one-component polyurethane adhesives for laminated structural timber elements.
Even if it is treated, timber can sometimes decay sooner than expected. When this is because of an active fungal population in the surrounding area, simple actions can prevent replacement timber from also rotting.