Louisiana-Pacific Corporation

Louisiana-Pacific Corporation, generally known as LP Building Solutions, is a Nashville-based manufacturer of engineered wood building products. Spun out of Georgia-Pacific in 1973, the company operates mills across North America and South America producing oriented strand board, structural sheathing, sub-flooring and its LP SmartSide engineered wood siding and trim line. The business now runs on two very different economics: siding holds pricing power as a branded product, while OSB moves with commodity panel markets. That split showed clearly in the second quarter of 2026, when the siding segment held a 26% EBITDA margin on 7% higher prices while the OSB segment posted negative $21 million in adjusted EBITDA.

LP’s catalog divides along the building envelope. The exterior side carries LP SmartSide Trim & Siding, its prefinished sibling LP SmartSide ExpertFinish, and the ExpertFinish Naturals Collection palette. The structural side carries LP WeatherLogic Air & Water Barrier, LP TechShield Radiant Barrier Sheathing, LP FlameBlock Fire-Rated Sheathing, LP Legacy Premium Sub-Flooring and LP TopNotch 350 Durable Sub-Flooring. A separate Outdoor Building Solutions line supplies shed builders with siding, roof sheathing and flooring in Premium and Everyday series.

The dates behind those lines explain a lot about the company. LP was incorporated on July 20, 1972 and began trading on the New York Stock Exchange the following year. In 1979 it started construction on North America’s first OSB mill, at Hayward, Wisconsin, at a point when plywood still dominated structural panels. SmartSide arrived in 1997, built on a proprietary process intended to resist moisture, termites and fungal decay while keeping the appearance of wood. The company marked its 54th birthday in July 2026.

Recent activity has stayed on that track. LP BurnGuard FRT OSB is described by the company as the first commercialized fire-retardant-treated OSB panel certified to meet applicable building codes for fire-retardant wood structural panels, and it took a 2026 LBM Journal Innovation Award in July 2026. In June 2026 LP broke ground on a new SmartSide ExpertFinish manufacturing facility in North Branch, Minnesota. In August 2026 it awarded the largest scholarship class in its history.

Sustainability reporting is now a standing feature rather than a side note. LP published its sixth annual sustainability report in July 2026 and reports that 93% of North American net sales in 2025 came from carbon-negative products, documented across nine environmental product declarations as storing more carbon over their life cycles than they emit.

For the people who specify and install the material, LP maintains a contractor locator for vetted siding installers, a Home Visualizer for color and style selection, a product literature library that includes code reports and certificates, case studies, training programs, and an Architect and Designer’s Desk. Spanish and Canadian French versions of the site run alongside the US English one.