Wausau Paper to Study Tissue Capacity Addition

MOSINEE, Wis., Jun 29, 2005 (BUSINESS WIRE) — Wausau Paper (NYSE:WPP) today announced that it has initiated a study to determine the feasibility of increasing tissue production capacity at its mill in Middletown, Ohio. The study, expected to be completed by the end of 2005, will include in its scope the potential installation of a new machine and support equipment at the Middletown site.

“We continue to be very pleased with the strong and profitable growth of our Towel & Tissue business segment,” stated Thomas J. Howatt, president and CEO. “Capacity optimization projects and operating efficiency gains have allowed us to substantially increase production at Middletown in recent years, but have brought existing equipment to its practical limit. A capacity expansion at Middletown represents one of the potential alternatives to ensure that our strong growth continues.”

Wausau Paper produces fine printing and writing papers, technical specialty papers, and “away-from-home” towel and tissue products.

Safe Harbor under the Private Securities Litigation Reform Act of 1995: The matters discussed in this news release concerning the Company’s future performance or anticipated financial results are forward-looking statements and are made pursuant to the safe harbor provisions of the Securities Reform Act of 1995. Such statements involve risks and uncertainties which may cause results to differ materially from those set forth in these statements. Among other things, these risks and uncertainties include the strength of the economy and demand for paper products, increases in raw material and energy prices, manufacturing problems at Company facilities, and other risks and assumptions described in Item 1 of the Company’s Form 10-K for the year ended December 31, 2004. The Company assumes no obligation to update or supplement forward-looking statements that become untrue because of subsequent events.

SOURCE: Wausau Paper

Wausau Paper, Mosinee Scott P. Doescher, 715-693-4470