Greenhouse structures usually require additional end wall and side wall framing to secure coverings and hang equipment. Treated lumber has traditionally been used for framing, but the cost of building with and maintaining wood components is leading growers to consider alternative framing materials to improve their bottom line.

Despite the higher initial investment, steel is a much better value than treated lumber. Steel has a much greater life span and, unlike some treated lumber, will not have a corrosive effect on surrounding materials. Steel components are easier to install than treated lumber, which reduces labor costs.