Filming for Curtains began November 10, 1980, and was completed December 19, 1980. The film was shot on locations in Muskoka, Ontario, Canada and Toronto, Ontario, Canada.
Influence
American death metal band Mortician used a sample from Curtains as an intro for the song "Audra" from their 2003 album Darkest Day of Horror. Bassist / vocalist Will Rahmer has said in interviews that Curtains is one of his favorite films.