In the coastal Carolinas, beauty and durability go hand in hand when it comes to home construction. From intense humidity and salt-filled breezes to heavy rains and hurricane threats, homes in this region must withstand some of the harshest elements year-round. That’s why choosing the proper exterior trim is a matter of long-term protection and performance. At Southern Lumber & Millwork, we’re proud to offer our Elite Treated Trim Boards, a proprietary product line explicitly engineered for the demands of the Lowcountry climate.

Whether you’re a custom home builder, remodeling contractor, or a homeowner seeking high-end materials, our Elite trim is designed to exceed expectations at every level.

Built for the Coast: What Sets Elite Trim Boards Apart

Elite Treated Trim Boards are not your average trim. They’re specifically manufactured and treated to perform in environments like Charleston, where moisture and sun exposure are significant concerns. Here’s what makes our Elite boards the best choice:

1. Clear Grade – Beautiful and Consistent

Each board is graded clear on two edges and one face, meaning you get a smooth, defect-free finish ideal for visible applications. This clarity elevates the curb appeal of any home, especially in custom or high-end projects where details matter.

2. No Wane – Maximum Strength and Stability

Wane, or missing wood at the edge of a board, can create vulnerabilities in trim installations. Elite boards are selected to be free from wane, ensuring complete dimensional integrity, fewer gaps, and stronger fastener retention.

3. Non-Arsenic Based Treatment – Safe and Long-Lasting

We treat our trim with a non-arsenic-based, effective, and environmentally safe preservative. This makes Elite Trim ideal for families, pets, and contractors who care about health and sustainability.

4. Kiln Dried After Treatment (KDAT) – Less Warping, Better Performance

One of the biggest challenges with treated wood is post-treatment movement. Our Elite boards are kiln-dried after treatment, which reduces moisture content and significantly minimizes the risk of warping, shrinking, or twisting once installed.

5. Fully Primed on All Six Sides – Ready for the Elements

Every Elite Trim Board is fully encapsulated in a high-quality, oil-based exterior primer on all six sides. That means better protection right out of the gate and faster installation for your crew. No on-site priming. No exposed edges. Just install, paint, and go.

Ideal for Custom Homes and Dream Projects

The charm of Charleston homes lies in their craftsmanship and detail—from gabled roofs to detailed window casings and elegant porch trim. Our Elite Treated Trim Boards provide the aesthetic flexibility and durability required to meet the demands of architectural styles like:

  • Lowcountry homes with large porches and dramatic overhangs
  • Historic restorations that demand traditional detailing with modern performance
  • New builds looking for low-maintenance, high-impact curb appeal

Whether framing out a custom bay window, wrapping a column, or accenting your gables, Elite Trim Boards offer the precision and longevity you need.

Why Builders and Homeowners Choose Southern Lumber

When it comes to quality materials, the product is only part of the equation. At Southern Lumber & Millwork, we take pride in being more than just a supplier—we’re a trusted partner in your building journey.

Stored Indoors, Delivered with Care

Our trim boards are stored indoors, away from rain, UV exposure, and temperature fluctuations. That means the board you receive is in the same pristine condition as when it was manufactured—no surprises when you unwrap it on the job site.

Local Inventory, Local Service

Based in Charleston, we understand the unique environmental challenges of the Lowcountry and beyond. Our team is always here to answer questions, offer guidance, and help you find the right material for the right application.

Make the Smart Choice for Your Next Project

Whether you’re building a coastal getaway, remodeling a historic Charleston home, or working on your dream porch, your trim should be as resilient as it is beautiful. With Elite Treated Trim Boards from Southern Lumber & Millwork, you get a premium product that’s purpose-built for the Carolina coast, backed by decades of lumber expertise, and trusted by builders across the region.

Make Southern Lumber and Millwork Your Preferred Charleston Lumber Supply

Contact Southern Lumber today to learn more about our Elite Treated lumber, or visit our showroom to see the difference quality makes.