Light organic solvent preservative (LOSP) is a waterproof timber treatment. LOSP may include synthetic pyrethroids, imidacloprid, azoles or copper naphthenates, which are all pesticides, but as it uses a solvent such as white spirit to contain the insecticides and fungicides, it is less hazardous than other timber treatments.

LOSP is finger jointed for increased stability and can be used for all above gro und applications such as pergolas, carports, verandahs and fascias. Treated products are dry and stable. Light and easy to handle makes it easy to work with, like untreated …

What is LOSP? LOSP is a treatment that is usually a white spirit based solvent that contains copper naphthenates and synthetic pyrethroids as well as other chemicals to provide protection from insects and decay. How Does It Work? The timber is placed in a pressurised chamber with the LOSP solvent.

When pine is treated, it is impregnated with a chemical solution which prevents deterioration by insect or fungal attack and provides a long term resistance to decay. The complete range of Woodhouse Weatherproof® products are H3 LOSP (Light Organic Solvent Preservative) treated to be resistant against termite and fungal attack.

New Zealand radiata pine, all Woodhouse Weatherproof® is available in a range of lengths and profiles to service current building practices and designs. Chemically treated using an organic H3 LOSP preservative for resistance against termite and fungal attack, the Weatherproof range is a ready to use building product intended for use in

Advantage Plus™ products are a fully treated, primed fingerjointed Pine product that is strong, versatile, easy to use. Made from a renewable resource, these products withstand a wide range of climates and come with a 30 year warranty. The LOSP treatment process makes Advantage Plus safer to use and handle than other treated products.

Pink Primed and LOSP Treated Architectural Radiata Pine building products manufactured for outdoor use in above ground structural and decorative applications. Pre-Painted with a genuine pink primer, and H3 treated against fungal and insect attack, every Woodhouse Weatherproof® product comes with a 25 year warranty offering genuine peace of mind.

The 18x18mm Pine DAR Primed H3 LOSP treated timber is finger jointed for enhanced strength & straightness & primed for your convenience. Find it at Bowens.

LOSP H3 is an effective preservative formulation designed to provide a lasting protection for timber products used in external situations above ground. The formulation contains specialised fungicides for protection against fungal decay and an insecticide to provide lasting protection from termites and other timber boring insects.

For strong and durable timber, you can't go past Bowens 190x45mm H3 LOSP treated pine. Kiln dried and MGP10 for strength you can trust. Shop online now!