Crafted By Experts,
sustainable by nature

We deliver premium, responsibly sourced lumber and thermally modified wood options with expertise, craftsmanship, and an unyielding commitment to sustainability.

Thermally Modified Wood Durable Hardwoods

leaders in responsible forestry

Excelsior is your source for ethical lumber. We prioritize making the earth-friendly choice whenever possible, and implementing practices such as:

Rejecting Clearcutting

Regulated,
Selective Harvesting

Fair and Dignified
Treatment for
Every Supplier

Comprehensive
Tracking

Prioritizing
Reclaimed Timber

Utilizing
Every Scrap

These are just a few of the choices we make as a company dedicated to practicing responsible forestry–it’s part of The Excelsior Promise. Learn more.

Our Sustainability Promise

Protecting Large Acreage Annually Through Responsible Sourcing

We’re one of the only mills worldwide producing such a large volume of timber while remaining committed to leaving the land better than we found it.

Featured Products

Thermally Modified Wood

Heat Treated Lumber

Undergoes a patented process that alters the chemical structure, making it durable enough for indoor and outdoor use.

Reclaimed Wood

Upcycled Lumber

Expert millers reveal new life and unique character in antique, responsibly sourced timber.

Inari ^TM

Thermally Modified Wood

Sourced from Europe. Inari^TM starts as Nordic Spruce, then undergoes the thermal modification process that makes it more durable.

Ambara ^TM

Thermally Modified Wood

Sourced from West & Central Africa. Ambara^TM starts as Ayous, then undergoes the thermal modification process that makes it more durable.

Crafted By Experts, sustainable by nature