Butterfield Lumber Inc. of Midvale has been named an authorized machinecoat operator by representatives of Olympic Stain, a company manufacturing penetrating stains for more than 50 years.

Ron Butterfield, manager of the company's stain department, said the recognition came in conjunction with Olympic's introduction of Machinecoat Exterior Finish, a 100-acrylic latex coating formulated for machine application to raw wood and manufactured siding.Machinecoat has been in the development and testing stage for more than 10 years, Butterfield said, and builders, architects and painting contractors have been involved in the testing. More than 10 million board feet of raw wood and manufactured siding were tested.

Butterfield said the coating eliminates delays caused by bad weather, ensures an even finish and provides a marketable exterior before the project is completed.