Story by Micaela Arnett / May 30, 2025
Until recently, pressure-treated (PT) lumber has been the preferred material for decks, porches, and outdoor structures. Unfortunately, in the past 15-20 years, some PT lumber has failed due to changes in preservatives and treatments. Historically, it was preserved with chromated copper arsenate (CCA), an extremely effective treatment for resisting rot, insects, and moisture damage. Due to environmental concerns, the industry moved to alternative preservatives. While these newer treatments were designed to be safer, some formulations did not offer the same longevity, resulting in premature wood failure in specific exterior applications. This has prompted the development of enhanced PT options and alternatives, such as composite decking and exotic hardwoods like Ipe. The following products are popular with local homeowners seeking more durable and long-lasting solutions.
Southern Lumber and Millwork’s exclusive Elite Treated products are manufactured from C-grade and better Southern Yellow Pine, pressure-treated for ground contact, and dried after treatment to ensure a uniform moisture content. It is milled for uniform dimensions. Each piece is then encapsulated by Carolina Machine Finishing on all sides with a high-grade Sherwin-Williams oil-based primer, enhancing the durability and stability of the substrate by creating a vapor barrier. Sherwin-Williams offers a 15-year primer/paint warranty and a 25-year warranty if a second coat is factory applied. Elite Treated products are manufactured locally to withstand the Lowcountry elements. With dimensional and moulding profiles available, it provides superior protection for your home. Available exclusively at Southern Lumber & Millwork Corp.
BOSS (Buck Outdoor Super Select) Wood Pressure-Treated lumber, custom-milled to various profiles, meets diverse project requirements. It offers the same pressure-treated protection as YellaWood® brand PT pine and is kiln-dried before custom millwork, then oil-based primed by Carolina Machine Finishing(CMF) after treatment for superior stability. Available exclusively at Buck Lumber & Building Supply, Inc.
Ecolife® Stabilized Weather-Resistant Wood is an advanced pressure-treated lumber designed for exterior applications such as decking, railing, and above-ground framing. Its key feature is the integration of a non-metallic preservative with a built-in stabilizer. Available at 84 Lumber.
When considering the longevity of decking materials, composite decking is one of the most durable options, boasting a lifespan of 25 to 50 years. Its extended durability is attributed to advanced engineering, including a protective shell that resists fading, staining, and mold. This ensures a long-lasting, low-maintenance outdoor surface in a variety of applications.
For expert guidance on selecting the best option for your project, visit one of these local building material supplier to explore their premium materials firsthand.
84 Lumber – 704 Johnnie Dodds Blvd in Mount Pleasant and 2520 West North St. in Summerville
Buck Lumber & Building Supply, Inc. – 1911 Maybank Hwy.
Charleston Design Center – 3130 North Hwy. 17
Carolina Machine Finishing – 4696 Franchise St.
Southern Lumber & Millwork Corp. – 2031 King St Ext.
The Building Center, Inc. – 208 Dorien Dr, Andrews
