Clear Pine Thermowood®’s density is 350 – 480 kg/m3 when its moisture content is 6%. Natural variation will occur between individual boards. It is also both light and easy to work with but can be brittle and care should be taken during storage and installation to avoid any unnecessary exertion of stresses.
Durability and Decay resistance
Clear Pine and Red Pine Thermowood® has improved durability when used in above ground applications as the treatment process destroys the rot-causing hemicelluloses which nourish fungi and bacteria. It also has high resistance to most decay fungi. Whilst it does not resist the biological growth of algae on its surface, this aesthetically unpleasant but non-damaging occurrence can be avoided by treatment.
Whilst nail holding strength values for wire and improved nails are consistent with the values for European Redwood, screw holding strength is reduced by approximately 20% due to the altered state of the cell wall during the thermal modification process.