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Pressure treated wood is a type of lumber that has undergone a treatment process to increase its durability and resistance to decay and insect damage. This treatment involves placing the wood in a vacuum chamber and then introducing chemical preservatives under high pressure. The process forces the preservatives deep into the wood fibers, providing long-lasting protection.
Benefits of Pressure Treated Wood:
- Durability: One significant advantage of using pressure treated wood for a picnic table is its exceptional durability. The preservatives used in the treatment process help prevent the wood from rotting, decay, and insect infestations, enhancing its lifespan significantly.
- Cost-effective: Pressure treated wood is relatively cost-effective compared to other outdoor building materials, such as cedar or redwood. This affordability makes it an attractive option for those on a tight budget.
- Low maintenance: Another advantage of pressure treated wood is its low maintenance requirements. Unlike other materials that may need sealing or staining, pressure treated wood typically requires only occasional cleaning to keep it looking good.
Considerations for Picnic Table Use:
- Chemicals in the wood: One concern often raised about pressure treated wood is the potential presence of chemicals that may leach from the wood surface. In the past, certain pressure treated wood contained arsenic, which raised health concerns. However, since the early 2000s, the use of arsenic-based preservatives has been phased out, and alternative treatments have been introduced, making pressure treated wood safer for use in picnic tables.
- Food safety precautions: To ensure food safety while using a pressure treated wood picnic table, it is recommended to use a food-safe sealant on the tabletop and any other areas coming into direct contact with food. Applying a sealant will create a barrier between the wood and the food, reducing the risk of potential chemical exposure.
- Exposure to rain and sun: When using pressure treated wood for a picnic table, it is important to consider the table’s exposure to the elements. Over time, rain, sun, and other weather conditions can cause the wood to deteriorate, potentially making it less safe for use. To counter this, it is advised to regularly inspect the table for any signs of damage or splintering and to take appropriate maintenance steps, such as resealing or sanding, to keep the table in good condition.Pressure treated wood can be a safe and practical choice for building a picnic table. Its durability, cost-effectiveness, and low maintenance requirements make it an attractive option for many outdoor enthusiasts. While concerns about chemicals leaching from the wood surface have been addressed with the introduction of safer treatments, taking necessary precautions, such as using food-safe sealants and regularly maintaining the table, will help ensure the safety and longevity of your pressure treated wood picnic table.