All make-up effects were created practically, without digital input.
An entire sequence was written and shot in the bathroom which intended to follow the film's final shot, that of a slime and pus covered skeleton in the bathtub, but was eventually cut.
Actor Austin Hayden spent seven gruelling hours in make-up for the final stage of his character's "transformation".
The "broken television" was created by editor Jim Lang and burned onto disc before simply being played in a Blu-ray player on loop.
The location in the film was, in fact, 1st Assistant Director Remo Catani's actual flat.