Discover our Family of Treated Lumber Preservatives

Giving DCOI-Treated Wood a Responsible Second Life

Good stewardship does not have to end when treated wood leaves its original application. In many cases, that may simply be the beginning of its second life.

From the Ocean to the Railroad Track

DCOI, a chemistry first developed to solve a problem on ship hulls has traveled an unusual path into residential lumber, utility infrastructure, and now railroad crossties. Its story shows how wood preservation has continued to evolve alongside changing performance and environmental expectations.

Above Ground vs. Ground Contact Treated Wood: Choosing the Right Lumber for Your Project

Above Ground and Ground Contact treated wood are both designed to protect wood from decay and termite attack, but they are intended for different exposure conditions. Using the right product for the right application helps keep material costs in line, and avoids unnecessary overtreatment.

Understanding Lumber End Tags: How to Choose the Right Treated Wood for Your Project

A lumber end tag may be small, but it carries a lot of project-saving information. Think of it as the wood’s passport: it tells you where that piece of lumber is meant to be used, what protection it carries, who treated it, and whether it was produced to recognized industry standards. Learn More.

Deck Safety Month Is Almost Over, But Deck Safety Shouldn’t Be

Deck Safety Month Is Almost Over, But Deck Safety Shouldn’t Be. Summer is officially just a few weeks away, and while only a few days remain in May, Deck Safety Month® is still an important reminder for homeowners to take action before outdoor living season reaches full swing.

The Proven Safety of Using Treated Wood in Raised Garden Beds and How to Build Your Own

A raised garden bed turns a patch of backyard into a living pantry, a science lab, and a peaceful retreat all at once. But for many homeowners, one question still lingers like a stubborn weed: “Is pressure-treated wood safe for growing vegetables?” The answer is, "Yes!"