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LOSP can be used for the preservation of most timber products used in external, above ground applications.

“L.O.S.P” or light organic solvent preservative treated timber requires no kiln drying after treatment as the solvent evaporates from the timber over time.

Koppers LOSP is an effective preservative formulation designed to provide lasting protection for wood products used in external situations above ground.

The formulation contains well proven fungicides for protection against fungal decay and an insecticide to provide lasting protection from termites and other wood boring insects. The complete formulation is applied by a controlled vacuum pressure process.

Koppers LOSP uses a solvent carrier to transport the active ingredients into the wood. This solvent causes little or no swelling during treatment. This means that the timber maintains its original size, shape and strength grading.

Active Ingredients

• Propiconazole and Tebuconazole: This synergistic combination of organic fungicides protects timber from fungal decay in above ground situations.
• Permethrin: Permethrin is a contact insecticide that prevents termites and other wood-boring insects from attacking timber.
• IPBC (Where requested): A mouldicide commonly used to reduce mould growth on damp timber surfaces.