TREATED PINE (STANDARD) pinus radiata Treated Pine has been around for a long time and as most of us know who has used in the in past it can be very troublesome with the twisting and bowing that can sometimes happen. It is a soft wood so will not perform as well as hardwood for structural strength or defend itself as well in everyday wear and tear with under the foot traffic. There are many types of pine species used to produce treated pine on the market so a site inspection is recommended before purchase to ensure the quality is as expected. Class 1 above ground, Termite resistant – BAL Low – Non Leaching – Janka hardness 4.0 Standard sizes are – 90-x22, 140×22