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On June 4, Louisiana-Pacific Corp. shipped the first rail car of laminated strand lumber (LSL) from its new LSL manufacturing facility in Houlton, Maine.

Served by the Montreal, Maine & Atlantic Railway, the facility had produced oriented-strand board since 1982. Louisiana-Pacific spent $140 million to expand the plant and convert the facility to LSL production. The plant is expected to produce seven million cubic feet of LSL annually.

LSL is a structural engineered wood product based on wood-strand technology that's used in residential construction, such as for headers and beams, wall studs, roof beams and rafters, and truss chords.

The Houlton plant is Louisiana-Pacific's first LSL manufacturing facility and one of only a few LSL-producing plants in North America, the company said.