From large scale industry to small town makers, over the years This Old House has explored the places that provide building and finishing materials for our projects. We look back at some fascinating factories we’ve visited.

A recent program of the show featured several interesting tours. The complexity and intricacy of the machinery involved in the production of the materials is striking. One of the operations is in Pennsylvania.

These are the companies visited.
Interior doors: Baird Brothers Fine Hardwoods
Window glass: Cardinal Glass Industries
Bathtub: Kohler
Window factory: Marvin
Precast concrete walls: Superior Walls; Weaver Precast
Dimensional framing lumber: Weyerhaeuser

Link to the program:
https://www.thisoldhouse.com/behind-the-build/21506727/s42-e2-factory-made