Wood preservation is the process of treating wood to protect it from decay, insects, and environmental damage. This is important for extending the lifespan of wooden structures and products, such as furniture, decks, and fences. Common methods include chemical treatments, pressure treatment, and natural preservatives like oils and waxes. The chemicals used in wood preservation, such as copper compounds and borates, help prevent rot and insect infestations. Properly preserved wood can withstand harsh weather conditions and resist damage, making it a sustainable choice for construction and outdoor applications.