Lilo & Stitch director Dean DeBlois led the project, using an Icelandic crew.
The documentary-style project was filmed at 15 locations last summer during the band's tour of Iceland. The title is Icelandic for 'at home' or 'homeland'.
The film includes performances from all four Sigur Ros albums, two new songs, personal reflections from band members and also is described as 'an alternative primer' to Iceland as a 'magical place,' not just a stag-do destination.
A companion album, Hvarf-Heim, has been recorded.
The film will have its world premiere Sept 27 at the Reykjavik International Film Festival before going to other festivals.
The nationwide UK release in selected cinemas will follow.
On Nov 5, the double DVD and book package will be released.