Thermally modified wood is typically used for decks. The process involves heating the wood in an oxygen free environment, which makes it stable, rot-resistant and darker in color. Three 12′ long 8/4 boards of thermally modified ash were used for this garden bench. The wood was cut with a bandsaw, with a chisel and oscillating sander used for clean up. Joinery is mortise and tenons. Finish prep involves sanding, gluing and masking off the tenons. Simple teak oil provided the finish.
- Thermal modification heats wood in an oxygen-free environment, which makes it stable, rot-resistant and darker.
- Construction begins with the side assemblies and cutting the rails and leg blocks to length.
- Teak oil is used to finish and epoxy to glue it together.
“Thermally modified woods have been around for a while mostly in the building industry where it’s primarily used for decking.”