NEW LIMERICK, Maine — A wood siding manufacturer is filing a new air emissions license application with the state so it can add another line of finish products at its Houlton-area mill. Louisiana-Pacific will file the application with the Maine Department of Environmental Protection on May 3, LP spokeswoman Breeanna Straessle said. Details about the new emissions and their effect on the environment will not be made public until the filing. The new finish will not result in making more products or hiring more employees, according to Straessle. “It is not about capacity. It’s about making a different type of product. Our siding has a cedar finish, this new finish will make a smooth finish with a different texture on the siding,” she said. The Louisiana-Pacific mill, located about five miles outside Houlton, employs approximately 150 people in the area.