Inside the only thermal wood plant in North Carolina running 100% local lumber
Emberline Wood is made in Charlotte, from green lumber to prefinished board. Conventional kilns, thermal modification chambers, high-speed moulders and prefinish lines all operate under one roof — a combination few thermal producers in North America can match.
Follow a board through all 10 steps below. Every photo was taken on our floor.
Local Timber Intake
Every charge starts as 100% locally harvested North Carolina hardwood or Southern Yellow Pine.
Green lumber arrives from regional sawmills a short haul from the Charlotte facility. Each load is tallied, graded for grain, defects and heartwood content, then sorted by species and thickness before it enters the yard.
Short supply lines keep transport emissions low and give full traceability from forest to finished board. Our Southern Yellow Pine is selected from old-growth timber, with tighter growth rings and higher natural strength than plantation pine.
- Ash, Oak, Poplar, Southern Yellow Pine
- Graded and sorted at intake
- Traceable regional sources
Stickering & Yard Staging
Lumber is stacked on spacers so air reaches every face of every board.
Boards are laid in even courses separated by stickers — uniform spacers that keep airflow consistent across the stack. Straight, level stacks are the first defence against warp and twist later in the process.
Stacks are staged by species and thickness so each kiln charge is uniform. A mixed charge dries unevenly; a uniform one dries predictably.
- Uniform sticker spacing
- Staged by species and thickness
- Level, weighted stacks
Conventional Kiln Drying
Conventional kilns bring every board to a consistent starting moisture content.
Before thermal treatment, lumber is dried in our own conventional kilns on species-specific schedules. Fans reverse direction through the cycle so both sides of the stack dry at the same rate.
A final conditioning phase relieves internal drying stress. Few thermal producers in North America operate their own conventional kilns — controlling this step is what makes the modification that follows repeatable.
- Species-specific drying schedules
- Reversing airflow
- Stress-relief conditioning
Thermal Modification
Heat and steam only, from 160°C to 215°C, in a low-oxygen chamber. No chemicals.
The charge is ramped up under a steam blanket that displaces oxygen and prevents combustion. Once the core of the wood reaches target temperature, it is held there for a set period determined by species and the finish color required.
At these temperatures the hemicellulose in the cell walls breaks down and the number of hydroxyl sites that bind water drops sharply. Wood sugars that feed decay fungi are driven off. The change is permanent and runs through the full thickness of the board.
- 160°C – 215°C treatment range
- Steam-blanketed, low-oxygen chamber
- Through-body color and stability
Process Control
Every run is monitored and logged from ramp-up to cool-down.
Temperature probes track the core of the wood, not just the chamber air. Operators follow each run on the control system and adjust steam and heat input to keep the charge on its curve.
Run records are kept by charge, so color and performance can be matched on repeat orders and traced back if a question ever comes up on a project.
- Core temperature monitoring
- Logged run records
- Repeatable color by charge
Cooling & Re-Conditioning
Controlled cooling and water spray bring the wood back to a workable moisture content.
After the hold phase, the chamber is cooled gradually and the wood is re-moisturized to a stable working range of roughly 4–7%. Cooling too fast causes checking; the controlled curve prevents it.
The result is a board that is lighter, more stable and more decay resistant than the lumber that went in — with a warm, even tone from face to core.
- Controlled cool-down
- Re-conditioned to ~4–7% MC
- Inspected before milling
Resawing & Cutting
Modified stock is resawn, ripped and crosscut to the blanks each profile needs.
Industrial bandsaws and crosscut saws break modified lumber down into profile blanks. Defects are cut out at this stage so only clear, sound material moves on to the moulders.
Blades are maintained on site. Thermally modified wood is harder on edges than untreated lumber, and sharp tooling is what keeps faces clean and fibres uncrushed.
- Resaw, rip and crosscut
- Defects removed before moulding
- On-site blade maintenance
Moulding & Profiling
High-speed moulders run cladding, siding, decking, trim and paneling profiles in one pass.
Each moulder carries multiple cutter heads that surface all four faces and cut the profile simultaneously. Knives are ground to each profile and kept on file, so standard and custom profiles repeat exactly on later orders.
Running profiles in the same facility that treated the wood means no transport between steps and no handoff in quality control.
- Four-sided, single-pass moulding
- Profile knives kept on file
- Standard and custom profiles
Material Handling & Dust Collection
Conveyors, vacuum lifters and a central dust system keep boards moving and surfaces clean.
Chain conveyors and vacuum lifting equipment move boards between machines without dragging or dropping, protecting finished faces and edges.
Every machine is connected to a central dust collection system that feeds the cyclone and silo outside. Clean air in the plant means clean surfaces going into prefinishing.
- Chain and roller conveyors
- Vacuum lifting
- Central cyclone and silo
Prefinishing, Grading & Shipping
Boards are prefinished, graded, counted to order and wrapped before they leave.
Prefinishing on our own lines coats all faces under controlled conditions, giving a more even and durable film than field application and shortening the schedule on site.
Every order is graded, tallied against the materials list, bundled and protected for transport to projects across the Southeast.
- In-house prefinish lines
- Graded and tallied to order
- Wrapped for transport
At a glance
- Location
- Charlotte, North Carolina
- Joint venture
- Blandy Hardwoods & Ellis-Reid
- Manufacturing heritage
- 40+ years
- Team
- 30 skilled specialists
- Service area
- The Southeast
- Lumber source
- 100% locally harvested
- Species
- Ash, Oak, Poplar, Southern Yellow Pine
- Treatment range
- 160°C to 215°C
- Process
- Heat and steam only
- Equipment
- Kilns, modification chambers, moulders, prefinish lines
- Facility size
- Approx. 60,000 sq ft*
- Annual capacity
- Approx. 2 million board feet*
* Estimated figure, pending confirmation.
Questions we get asked
The process, species, custom profiles, finishing and where the material should and shouldn't be used.