Built to Last: Pressure-Treated Lumber with MCA Protection
When you choose Biewer pressure-treated lumber, you’re getting wood that’s designed to last through every season. Our lumber is protected with Micronized Copper Azole (MCA), a trusted treatment from Koppers Performance Chemicals.
That means your project isn’t just built — it’s built to stand strong against the elements.
Biewer’s processing facilities include three state-of-the-art treatment plants that process and treat a capacity of 350+ million board feet annually.
Why Choose MCA-Treated Lumber?
Protection You Can Count On
MCA works hard behind the scenes to keep your wood safe from rot, decay, and termites. That means fewer worries about repairs and replacements.
Cleaner, Natural Look
Unlike older treatments, MCA keeps the wood’s natural color lighter and cleaner. It’s easy to stain, easy to paint, or just leave as is for a fresh, natural finish.
Safe for Outdoor Living
From decks and fences to raised garden beds and playsets, MCA-treated wood is approved for all the spaces your family enjoys most.
Backed by Innovation
With decades of research behind it, MCA is one of the most reliable wood protection systems available today.
How We Treat
At Biewer Lumber, protecting your investment starts with protecting the wood. That’s why we partner with Koppers Performance Chemicals, an industry leader in wood preservation technology, to ensure our lumber is built to last in every environment.
MicroPro® MCA Treatment
Much of our pressure-treated lumber uses MicroPro® technology with Micronized Copper Azole (MCA). This innovative process infuses wood with micronized copper particles and biocides, giving it long-lasting protection against fungal decay, rot, and termites.
- Eco-Friendly Innovation – Koppers MicroPro® technology is the first treated wood process to be EPP (Environmentally Preferable Product) certified by Scientific Certification Systems based on a Life-Cycle Assessment.
- Cleaner, Natural Look – The micronized copper particles penetrate the wood fibers more smoothly, providing a cleaner, more natural wood appearance compared to traditional treatments.
- Versatile Applications – Ideal for decks, fences, landscaping, and general outdoor structures, MCA-treated lumber is a reliable choice for residential and commercial projects.
NatureWood® Treatment
Biewer also offers products treated with NatureWood® preserved wood, another trusted Koppers technology. This treatment uses copper azole as its preservative, a proven formula that provides a strong barrier against decay and wood-destroying insects.
- Proven Durability – NatureWood® has been protecting outdoor structures for decades, making it a preferred choice for builders, contractors, and homeowners.
- Versatile & Safe – Suitable for above-ground, ground contact, and critical structural uses, NatureWood® is well-suited for projects requiring dependable, heavy-duty protection.
- Peace of Mind – NatureWood® is widely recognized for its safety and reliability, giving customers confidence that their projects will stand the test of time.
Built for Performance
Whether using MicroPro® MCA for its modern, environmentally conscious benefits or NatureWood® for its proven, heavy-duty durability, every board that comes out of our facilities is engineered to perform, protect, and last.
At Biewer Lumber, we take pride in making sure your projects are built on a strong foundation—because treated right means lasting longer.
Learn how lumber is pressure treated by watching Koppers Lumber Treating Animation:
This animation is meant to provide a general overview of the wood treating process. It is not meant to provide actual instruction, technical data, retention standards, penetration requirements, or quality control guidelines.
