Timber Pressure Treatment at Murthly Sawmill

The need to treat timber

Timber at Murthly Sawmill undergoes pressure treatment to aid long-term preservation. Typically wood which is left untreated is susceptible to attack from

Wood-boring insects
Fungi

See opposite for newly cut larch posts in their pre-treatment state. These are then processed by the Osmose Naturewood process. Click the above link then the“Osmose Naturewood” link on the left hand menu and read the information on the page presented. At the foot of this page there is a useful animation to show the treatment process. Using the green button to start the display, then use the forward and back buttons to step through it.

Log end separator - timber treatment page

Standard of pressure treatment at Murthly Sawmill

Osmose Naturewood consists of wood pressure treated with a copper and organic biocide as recommended.

Murthly Sawmill operates to User Class 4 (UC4). Standard BS8417 (2003) applies.

User Class 4 states that timber use is “In contact with ground or fresh water. Permanently exposed to wetting.” From the table in the link and this description it is clear that this is the highest rating with an expected life of 15-30 years.

Please click here for Murthly’s Treatment Statement, including end user / installer advice.