Devin W. Stockfish
President and Chief Executive Officer at Weyerhaeuser
Thank you, Beth. Good morning, everyone, and thank you for joining us today. This morning, Weyerhaeuser reported second quarter net earnings of $1 billion or $1.37 per diluted share on net sales of $3.1 billion. I'm extremely proud of our team's accomplishments in the second quarter. Their collective efforts delivered the company's strongest quarterly adjusted EBITDA on record at $1.6 billion, surpassing last quarter's record by 43%. Our year-to-date adjusted EBITDA is almost $2 billion higher than the first half of 2020.
Wood Products delivered another record quarter at $1.4 billion of adjusted EBITDA, surpassing last quarter's record by 56%. Turning now to our second quarter business results. I'll begin the discussion with Timberlands on Pages five through eight of our earnings slides. Timberlands earnings and adjusted EBITDA improved by approximately 5% compared with the first quarter. In the West, adjusted EBITDA increased slightly in the second quarter. Western domestic markets remained favorable despite the decline in lumber prices late in the quarter and a healthy supply of logs to the market.
Demand remains strong as mills took precautionary measures to bolster log inventories in response to an early fire season resulting from persistent dry conditions in a period of extremely high temperatures. This steady demand pull drove our sales volumes modestly higher during the second quarter. Salvage operations from last year's fires in Oregon are continuing to supply an abundance of smaller diameter logs to the market. Consequently, prices for smaller diameter logs in Oregon have experienced some downward pressure.
As a result of this dynamic, our domestic sales realizations were slightly lower in the quarter. To date, we've harvested nearly 2/3 of our planned salvage volume in Oregon. Salvage productivity has slowed somewhat as warm summer weather arrived early and we began to transition salvage harvest operations into higher elevation tracks, which generally have lower productivity and higher operating costs. Forestry and road costs were seasonally higher during the quarter as we do a significant amount of this work during the warmer summer months.
Turning to our export markets. In Japan and China, demand for our logs remained strong, and our sales realizations increased significantly. Global logistics constraints, particularly with respect to shipping container availability and strong North American lumber prices continued to impact the availability of imported lumber into Japan and China. This has resulted in strong demand for locally produced lumber and increased demand for imported logs. Additionally, a ban on Australian logs continues to reduce the supply of imported logs to China.
Our China sales volumes increased in the quarter as we intentionally flexed volume from the domestic market to capitalize on strong demand signals and pricing from our Chinese customers. Moving to the South. Southern Timberlands' adjusted EBITDA increased by approximately 10% compared with the first quarter. Southern sawlog markets improved due to record lumber and panel pricing for most of the quarter and supply limitations resulting from persistent wet weather.
Fiber markets also strengthened as mill inventories remain lean and wet conditions constrained supply. As a result, our sales realizations were slightly higher than the first quarter. Fee and sales volumes were significantly higher in the quarter despite impacts from multiple heavy rain events across the Gulf South. The wet weather in the quarter did, however, limit our ability to catch up on delayed harvest from the first quarter snow and ice events. Log and haul costs increased slightly, and forestry and road costs were seasonally higher.
Although Southern export represents a small component of our operations, we continue to see strengthening demand signals from China and India, resulting in increases in both sales volumes and realizations in the second quarter. However, container availability and increased freight rates continue to be a notable headwind. In the North, adjusted EBITDA decreased slightly compared to the first quarter due to significantly lower sales volumes associated with seasonal spring breakup conditions, partially offset by significantly higher sales realizations. Turning to real estate, energy and natural resources on Pages nine and 10.
Earnings and adjusted EBITDA decreased by approximately 5% compared with the first quarter due to timing of real estate sales and mix of properties sold, but were significantly higher than the year ago quarter. Earnings increased by more than 230% compared with the second quarter of 2020. Demand for HBU properties has been very strong year-to-date and average price per acre remains elevated compared to historical levels. We continue to capitalize on this market and have been increasing our prices in many regions.
This is resulting in a steady stream of high-value transactions with significant premiums to timber. In Energy and Natural Resources, production of construction materials increased as demand remained strong during the quarter. Wood Products, Pages 11 through 13. Wood Products earnings and adjusted EBITDA improved by almost $0.5 billion compared with the prior quarter. Our lumber, OSB and distribution businesses all established new quarterly adjusted EBITDA records in the second quarter. These exceptional results were delivered, notwithstanding ongoing challenges with transportation and resin availability in the quarter.
I want to specifically call out and thank our supply chain and logistics teams for their tremendous work in helping us successfully navigate these headwinds. In the lumber market, average framing lumber composite pricing increased 29% compared with the first quarter. Lumber demand was strong during the first half of the quarter, but began to soften as do-it-yourself repair and remodel activity weakened toward the latter part of May.
The drop-off in the do-it-yourself segment, largely a result of changing consumer spending habits coming out of COVID restrictions and to some extent, record high lumber prices resulted in lower sales activity and higher inventories at the home centers and treaters. As a result, lumber prices peaked in late May and retreated at a rapid pace for the remainder of the quarter. Although inventories at home centers and treaters increased, inventory levels at dealers and distributors serving the homebuilding and professional repair and remodel segments remained below normal at quarter end.
Buyer positioning remains cautious with the reluctance to build meaningful inventory positions and a dynamic pricing environment. Adjusted EBITDA for lumber increased $291 million or 57% compared with the first quarter. Our sales realizations increased by 25% and sales volumes increased moderately. Log costs increased slightly in the second quarter, primarily for Canadian logs. OSB markets experienced historic strength in the second quarter as demand continued to outpace supply.
Inventories remain lean throughout the channel and supply constraints persisted due to resin availability and transportation challenges. As a result, pricing continued to accelerate to record levels before peaking at the end of the quarter. Average OSB composite pricing increased 52% compared with the first quarter. OSB adjusted EBITDA increased by $172 million or 57% compared to the first quarter. Our sales realizations improved by 48%.
Production and sales volumes decreased modestly and unit manufacturing costs increased, primarily due to a planned extended maintenance outage to complete a capital project at our Elk in OSB mill. Fiber costs were slightly higher in the quarter, primarily for Canadian logs. Engineered Wood Products adjusted EBITDA increased $11 million compared to the first quarter, a 26% improvement. Sales realizations improved across all products, and we continue to benefit from the price increases announced over the last year for solid section and I-joists products.
This was partially offset by higher raw material costs for oriented strand board web stock, resin and veneer. Sales and production volumes increased for solid section and I-joists products. In Distribution, adjusted EBITDA increased $36 million compared to the first quarter, a 92% improvement as strong demand drove higher sales volumes for most products and the business captured improved margins.
With that, I'll turn the call over to Nancy to discuss some financial items and our third quarter outlook.