LOSP Treatment


LOSP treatment, which stands for Light Organic Solvent Preservative treatment, is a wood preservation process that involves the use of organic solvents and preservatives to protect wood against decay, insects, and fungal growth. LOSP-treated wood is typically used in interior applications where exposure to weather and moisture is minimal.

LOSP Treatment Process

1. Wood Preparation

The wood to be treated is typically kiln-dried to reduce its moisture content and ensure optimal absorption of the preservative solution. The wood may also be surface cleaned to remove dirt or debris.

Wood in kiln

2. Preservative Solution Preparation:

A solution containing organic solvents and preservatives is prepared. The specific formulation of the solution may vary depending on the desired level of protection and the targeted wood species.

3. Treatment Application:

The wood is immersed or pressure-treated with the preservative solution. The organic solvents in the solution allow for deeper penetration of the preservatives into the wood, providing enhanced protection.

4. Drying and Finishing

After the treatment, the wood does not need to be dried due to the solvent that carries the chemical evaporating and leaving the chemical penetrated in the wood. Due to this evaporation the timber is typically treated in its already finished format.

Products treated with LOSP

Interior Joinery

LOSP-treated wood is commonly used for interior joinery applications, such as doors, windows, moldings, and furniture. It provides protection against wood decay and insect attack in indoor environments.

LOSP treatment on joinery
LOSP treatment on shelving

Cabinetry and Shelving

LOSP-treated wood can be used for cabinetry, shelving, and other interior storage solutions. It helps prevent fungal growth and insect damage, ensuring the longevity and durability of the wood.

Architectural Millwork

LOSP-treated wood finds application in architectural millwork, including paneling, wainscoting, and decorative trims. It helps protect the wood from deterioration in interior spaces.


Musical Instruments

Some musical instruments, particularly those made of wood, may be treated with LOSP to enhance their durability and protect against fungal growth. Examples include guitars, violins, and pianos.

Indoor Furniture

LOSP-treated wood can be used for indoor furniture construction, including tables, chairs, cabinets, and bed frames. It provides protection against decay and insect attack, ensuring the longevity of the furniture.