The makers of
Dhayam stated that it would be the first Indian film to be shot inside a single room from the start to the end, and that it about would be about eight people and an interview that changes their lives. The film's director, Kannan Rangaswamy, revealed that he had challenged himself to write a screenplay that happens inside a room, without making it seem like a stage play or television drama. While writing, he noted that he had to ensure that he had to keep the screenplay "tight" in order to engage viewers and that he worked extensively on the set-up of the single room. Technicians including editor
R. Sudharsan, and
cinematographer A. Packiaraj, an erstwhile assistant to
Nirav Shah during the making of
Billa (2007) and
Sarvam (2009), was signed on to work in the project that was produced by Sundar. Santhosh Prathap was signed on to play the lead actor, Shyam Krishnan signed to play the villain role, with other actors including
Jeeva Ravi, Jayakumar and Kadhal Kannan also joining the cast. Model
Iraa Agarwal was signed on to play one of the leading roles after Kannan had been impressed with her portfolio, and had successfully convinced her to make her acting debut through the project. Aanchal Singh, who earlier appeared in the
horror film Jackson Durai (2016), was signed as another leading female actress. Another model Samaira Sandhu also made her acting debut as one of the female leads with the film and completed shooting for her scenes in fifteen days, along with the other seven actors, by October 2015. The film's release was delayed for over a year as post-production work took place throughout 2016 and early 2017, with composer Sathish Selvam recording the background score with the assistance of a sixty-piece orchestra in
Macedonia. ==Soundtrack==