Owens Corning to buy doormaker Masonite for $3.9 billion

Backstory: Less than two months ago, Masonite agreed to buy rival PGT Innovations (NYSE: PGTI) in a $3 billion deal that it called "transformative."

• Then, just weeks later, PGT received and accepted a superior offer from Koch-backed Miter Brands.
• Masonite was left out in the cold, and prone to a takeover attempt.

The bottom line: Ohio-based Owens Corning says that acquisition of Masonite, a 99-year-old company with over 10,000 employees, will strengthen its position in the residential building materials market.