This article combines theory on comics, narrative, and discursive psychology and analyses how the gutter is co-constructed for storytelling in classroom interaction. Closure of the gutter has previously been treated as a cognitive aspect. Here, interactional video data are analysed, with participants organizing ten separate comic panels. The analysis focuses on participants' talk about the gutter, and how this constructs social actions. The results show how participants co-construct the gutter as meaningful space, hereby organizing time, actions, and events in narratives. The paper evinces that gutters are co-constructed as too narrow or too broad, relating chronologically and logically to surrounding panels. This contributes to sociocultural perspectives on literacy and use of comics for engaging with narratives in classroom practice.