Oak That Spent A Century As A Threshing Floor
Wear earned doing a job no new board can imitate. Built to your exact dimensions and shipped nationwide from Auburn, Georgia.
Thresher flooring oak box beams come from the hardest-working boards in the barn. Threshing floors took grain, livestock, wagons, and a century of work — the oak used for them was chosen because it could survive that, and a hundred to two hundred years later it still can.
Color: light to dark brown and golden brown — a natural red and white oak mix.
Texture: light to medium band saw or circular sawn marks.
Finish options: unfinished, wire brushed, or sanded. Stainable on request.
If you like the idea of a beam whose wood has a job history, this is the one.
Every Beechcreek box beam:
- 2, 3, or 4-sided box construction, built to your outside dimensions
- 1-sided skins available for trim and accent work
- Corners mitered for a clean, seamless appearance
- Backside planed; all visible faces sanded
- Bora Care treatment applied to kill insects and fungus
- Fastener holes filled with a sawdust-and-glue blend from the same wood
- Built to your exact dimensions — or your interior dimensions when the beam wraps steel, an LVL, or ductwork
- Shipped nationwide, full length, tarped and strapped
Thresher Flooring Oak, Installed
Each beam is one-of-a-kind. Expect natural variation in grain, stress cracks, nail holes, bug holes, knots, and patina — that’s the wood’s history, not a defect.
Installing Thresher Flooring Oak Box Beams
Most customers bring in a finish carpenter, though plenty of experienced DIYers handle it themselves. We supply the wood and we’re glad to talk through your run — we don’t install.
Before you start. Let the beams acclimate in the room for two to three days, stored off the floor in a dry, well-ventilated space. Keep temperature and humidity steady before, during, and after the install; wood moves with the room it lives in.
- Set your cleat. Rip 2×4 stock to match the beam’s interior width and fasten it to the joists or wall framing, level and on layout. Brackets are available separately if you’d rather not build cleats.
- Hang the beam. Lift it over the cleat and fasten through the sides with trim screws or lag bolts, keeping fasteners in the shadow lines.
- Fill the holes. Use the sawdust-and-glue blend that ships with your order — it’s milled from your own beam, so it disappears.
- Square your landing. Cut one end square where the beam meets a wall or corner for a flush finish.
Tools worth having on hand: lag bolts and trim screws, 2×4 stock, a level, circular saw, speed square, wrenches, drill and bits, braces, and ladders or scaffolding.
Care. Dust with a dry or barely damp cloth. In a kitchen or a high-traffic room, a sealer makes long-term upkeep easier.
How to Measure
Four numbers get your beam built right.
- Length — the full span, end to end. We build to 50 feet.
- Height — the vertical face, measured top to bottom.
- Width — the horizontal face, measured across the front.
- Interior height and width — the open channel inside the hollow beam. These are the ones that matter when the beam wraps an existing joist, steel, an LVL, or ductwork.
Wrapping something? Give us the interior dimensions and we’ll do the conversion: outside width comes out at interior width plus 2 1/2 inches, outside height at interior height plus 1 1/2 inches. We confirm both sets of numbers back to you before anything gets cut.
Beam under 14 feet? Tell us what it’s for. Mantels and floating shelves usually need end caps, and it’s easier to build those in than to add them later.
Why Builders and Homeowners Choose Beechcreek
Builders come to us because straight, square material makes the install go faster. When the beam fits the opening, corners stay tight and long runs stay true. Everything is milled here in Auburn, Georgia, and we stand behind what leaves the yard.
Homeowners and designers come for the surface. This oak spent decades as a barn threshing floor, and the wear it picked up doing that job is not something a mold or a router can fake. We’ll talk through sizing, texture, and finish so the beam lands right in your room.
And every order puts people coming out of recovery to work. That’s not a side story. It’s why the shop exists.
Tell us what you're building.
Frequently Asked Questions
What exactly is a threshing floor?
The barn’s central work floor, where grain was beaten (threshed) from the stalk and wagons rolled through. It was built from the toughest oak on hand because it had to take constant abuse — which is why it survived to become your beam.
Does the wear affect the build quality?
No — the wear is surface character, not structural weakness. Every board is milled, inspected, and built with the same mitered corners and construction as our other styles. The history shows; the craftsmanship doesn’t change.
What colors should I expect?
Light to dark brown and golden brown, in a natural mix of red and white oak — with the burnish and patina only a century of work can put on a floor.
Are box beams structural?
No — box beams are decorative. They’re hollow, built from the reclaimed faces of antique timber, and they hang on a cleat or bracket rather than carrying load. If the beam has to hold weight, that’s a solid beam, and your builder or engineer specifies the size.
Are thresher oak box beams safe to use indoors?
Yes. This oak spent decades as a barn threshing floor, so the moisture left and the movement happened generations ago. Every beam also gets a Bora Care treatment before it ships, which kills insects and fungus. We treat rather than kiln dry on purpose — kiln drying reclaimed wood tends to make it check and crack afterward.