At Sunbelt Forest Products, PT Lumber is the foundation of our business. As the largest producer and manufacturer of high-quality pressure-treated lumber in SE America, we ensure we use environmentally preferable wood preservatives that follow the latest AWPA standards.
In the pressure-treatment process, untreated lumber is loaded into a horizontal vacuum-pressure cylinder. After the cylinder door is sealed, a vacuum cycle removes air from the cylinder. A liquid preservative solution is then pumped in, and the pressure in the cylinder is raised, forcing the preservative into the wood. At the end of the process, the excess treatment solution is pumped back into a storage tank for reuse,
and a final vacuum cycle dries the surface of the wood.
Each treatment cycle is carefully monitored to ensure proper treatment and product quality. Because chemicals are driven under pressure deep into the wood, the protection goes far beyond the surface. It goes right to the heart of the wood, providing protection that is locked in and long-lasting.
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