There are two ways to specify treated wood – 1. by referring to the British Standard BS8417 or 2. by using the Wood Protection Association (WPA) commodity code system : Option 1: Using reference to the British Standard The British Standard for wood preservation is BS8417. This code of practice defines treatment by preservative penetration…
Never assume that any timber product that has a treatment colour pigment has been treated appropriately, the type of preservative treatment and amount of preservative loading determines if the timber has been treated appropriately, based on the final desired end use.Pressure treated timber is undertaken in a pressurised tank (chamber or vessel) and pressures can be…