Dimensional stability is a critical wood property for sidings, joinery and exterior millwork and trimboard use.
One key element that contributes to the stability of wood products is the kiln drying process. New Zealand radiata pine can be dried rapidly from green with no degradation.
New Zealand manufacturers have developed kilns and kiln technology to a very high standard and the drying process is continually researched and improved. The introduction of final steaming to eliminate drying stresses and improve stability is one example of this.
Compared to North American softwoods, New Zealand radiata pine has comparable shrinkage to ponderosa pine and less shrinkage than hemlock, loblolly pine and douglas fir.
Finger-jointing further supports the dimensional stability of Bodyguard as it removes the stress and distortion experienced with similar solid timber products.
The solvent-based treatment and alkyd priming and undercoating enhance it further, resulting in a stable durable product that outperforms similar products.