Louisiana-Pacific swings to Q4 loss as OSB market volatility weighs on results

Louisiana-Pacific (NYSE:LPX) reported a net loss for the final quarter of 2025, as a significant downturn in the oriented strand board (OSB) market overshadowed continued growth in its high-margin siding business.

The Nashville-based building products manufacturer posted consolidated net sales of $567 million, a 17% decline from the prior-year period.

The drop was fueled by a $132 million plunge in OSB revenue, where average selling prices fell 25% amid a cooling residential construction landscape.

Consequently, the company reported a net loss of $8 million, or $0.11 per diluted share, a sharp reversal from the $63 million profit recorded in the fourth quarter of 2024.

Despite the bottom-line pressure, LP’s strategic pivot toward its Siding Solutions segment remained a bright spot.

Siding net sales grew 6% to $384 million, supported by an 8% increase in average selling prices.

This segment has become the company's primary engine for stability; for the full year 2025, Siding net sales reached a record $1.7 billion, accounting for more than 60% of total revenue.