In August 2019, Roseburg Forest Products idled part of its plywood plant in Dillard, Oregon, laying off roughly 90 employees in an indefinite curtailment driven by weak conditions across the North American plywood market. The company moved about 50 of the affected workers to other wood products plants in Dillard and nearby Riddle, and the remaining employees were told they would be considered first when positions opened at other facilities. Plywood plants in Riddle and Coquille kept running as usual, which made the Dillard cutback a surgical response to one facility’s market exposure rather than a company-wide retreat.
The senior vice president of operations put the cause in one sentence: slow housing starts, imported plywood, and increased competition from OSB manufacturers were driving the imbalance between supply and demand. That combination is the normal state of the panel business, and the response follows a familiar playbook. Operators facing the same pressure turn to modernization, and the lessons from upgrading asphalt plant drum systems at the Vulcan Materials Peoria plant show what a focused capital program can deliver when volumes fall. This article walks through the forces that move plywood demand, the competition with OSB, the ways plants adjust capacity, and what operators do with idle time.
The Three Pressures on Plywood Demand
Plywood demand moves with construction, and construction moves with three forces that the Dillard announcement named directly: housing starts, imports, and substitution by OSB. Each one pulls on a different part of the market, and all three landed at once in 2019.
Housing starts set the baseline
Wall sheathing, roof sheathing, and subflooring track new floor area almost one for one. A typical 2,000-square-foot house consumes between 200 and 250 sheets of structural panel, split between walls, roof, and floors. When annual housing starts fall, panel consumption falls with them, and mills feel it first because panels are a commodity with no backlog cushion.
Imports and substitution squeeze from both sides
Imported plywood arrives with lower labor and fiber costs, and it undercuts domestic mills on price in coastal markets. OSB takes the substitution side: manufactured from small-diameter timber that used to be waste, it prices below plywood in most regions. Together the two forces cap what a domestic plywood mill can charge.
The numbers behind the three pressures are easy to read in hindsight. Housing starts in the late 2010s ran at roughly half the pace of the mid-2000s peak, imported panels held a double-digit share of the U.S. market, and OSB capacity kept expanding with new mills in the South. Each factor alone would dent a plywood mill’s order book. Together they forced the kind of supply adjustment the Dillard plant made, cutting output to match demand instead of betting that the market would turn on its own.
Idle time is the one bright spot in a curtailment. Maintenance crews get the access they never have during full production, and using plant downtime to improve asphalt plant uptime and reliability is a strategy that transfers directly to panel plants, which schedule their biggest repairs in exactly these windows.
| Property | Plywood | OSB |
|---|---|---|
| Typical price per sheet | Higher | Lower |
| Moisture swell at edges | Lower | Higher |
| Fastener holding | Strong on all faces | Strong face, weaker edges |
| Core material | Cross-laminated veneers | Oriented strands |
| Best uses | Exposed subfloor, wet areas | Walls, roofs, interior subfloor |
| Manufacturing cost | Higher, veneer peeling | Lower, strand pressing |
Plywood versus OSB in the Sheathing Market
OSB overtook plywood in the structural panel market decades ago on price. A sheet of OSB sells for less than a comparable sheet of plywood in most regions, and builders choose the cheaper panel where code and exposure allow it. That price gap is the engine behind the market share shift, and it is the reason plywood mills feel every downturn first.
Market share tells the rest of the story. OSB now supplies a majority of the structural panels used in North American framing, a complete reversal from the 1980s, when plywood dominated the category. The flip took decades, but the pricing logic never changed: builders substitute on price wherever codes permit, and OSB’s manufacturing cost advantage showed up in every bid. Plywood held the jobs that punished moisture and rewarded fastener holding, and lost the ones where a cheaper sheet performed well enough.
Where plywood keeps the edge
- Exposed subfloor and decking that will see weather before the roof goes on.
- High-moisture zones where edge swell in OSB causes problems.
- Engineered applications that need predictable stiffness across the sheet.
- Remodeling work that must match existing plywood thicknesses.
Manufacturers read the same signals as the market. The company that trimmed plywood output announced plans for a new engineered wood plant, a direct statement about where management expects growth: engineered wood products with stable margins rather than commodity panels that trade on price.
How Manufacturers Adjust Capacity and Staffing
A plant does not go from full production to closure in one step. Operators work down a ladder of curtailment options, each one more severe, and the Dillard action sat in the middle: a partial layoff at one plant while sister facilities kept running.
The curtailment ladder
- Reduce shifts: drop the second shift before touching the first.
- Idle one line: keep the highest-efficiency line running.
- Indefinite layoffs: release workers with recall rights intact.
- Full closure: the last option, taken when restart costs exceed recovery.
The choice between options comes down to restart economics. A plant that idles a line for three months still pays fixed costs through the shutdown: property taxes, insurance, and a skeleton crew for security and maintenance. Management weighs those costs against the price of recalling workers and re-commissioning equipment, and the math decides how deep the cutback goes. An indefinite layoff, the step Roseburg took at Dillard, keeps the option open while forcing the cost question into the open.
Workforce handling decides how fast a plant can come back. Construction demand is the counterweight to a slow housing market, and custom shoring cuts time and costs for a wastewater treatment plant expansion; the projects that drive that kind of work consume plywood by the truckload in concrete formwork, and when they accelerate, the recalled crews are the difference between a two-week restart and a two-month one.
Recall rights and redeployment
The Dillard response kept the workforce intact in two ways. Fifty workers transferred to other plants in Dillard and Riddle, which kept skilled crews on the payroll. The rest kept recall priority, so the first open position at any facility goes to a laid-off employee before any new hire. Seniority lists, retraining for different product lines, and regular communication all support that promise.
Using Curtailment Time for Maintenance and Automation
An idle line costs money, but a shutdown window is also the only time crews can reach the parts of a plant that production never stops. Operators who treat curtailment as a maintenance season come back faster and run cleaner.
Maintenance that pays off at restart
- Veneer lathes and peelers: knife changes and bearing rebuilds.
- Dryers: cleaning and calibrating the heat sections.
- Press platens: resurfacing and checking steam channels.
- Electrical rooms: thermographic scans and breaker replacement.
Control upgrades ride the same windows. Automation strategies for efficient drum plant operations show how sensors and control loops cut fuel and labor in an asphalt plant, and panel plants apply the identical logic, adding moisture sensors and press controls that pay for themselves in the first year back at full volume.
Keeping the Plant and Grounds Ready for Restart
A curtailed plant still has to look and run like a going concern. Buildings, equipment, and grounds all need care during the idle months, because the day the order book fills, there is no time to catch up.
Facilities work during idle periods
- Roof and siding repairs on production buildings.
- Yard drainage and paved-area patching for log and panel storage.
- Lubrication and corrosion protection on idle machinery.
- Fire system testing while the plant is empty of production crews.
Even routine grounds work gets a place on the schedule. Crews who know how to mulch plant beds for healthier soil and better plant growth keep the entrance presentable for customers, inspectors, and the neighbors who notice whether the mill is alive or abandoned.
Signals That Demand Is Coming Back
Panel demand recovers before the order book says so. Producers watch leading indicators that move months ahead of shipments, and the operators who track them time their restarts instead of reacting to them.
Leading indicators for panel demand
- Housing starts and building permits, reported monthly by region.
- Remodeling spending, which drives panel sales outside new construction.
- Mortgage rates and affordability indexes.
- Infrastructure awards for water, wastewater, and transportation.
Public construction is a reliable floor under panel demand. Projects such as the major stages in a water treatment plant pour large concrete structures, and every pour forms up with plywood, which is why producers watch municipal bond issues and infrastructure grants as closely as housing starts.
The balance returns the same way it left, gradually. Housing starts climb, import prices firm up, and OSB capacity fills, and the mill that used its downtime to maintain, automate, and keep its crew together is the one that answers the phone when the market turns. For builders, the same signals explain why panel prices move the way they do and why a plywood shortage can appear overnight after a long quiet stretch.