LOSP

LOSP stands for Light Organic Solvent Preservative. It is a type of preservative treatment used on lumber to protect it from decay and insect damage. The process involves using a light organic solvent to dissolve the preservative chemicals, which are then impregnated into the wood. The treated lumber is then dried, leaving the preservative chemicals embedded in the wood fibers. LOSP is typically used on interior or above-ground applications, as it is not as effective as other treatments for long-term outdoor exposure.