Juliette is a minimalist house located in Montreal, Canada, designed by L. McComber. In approaching this project, we studied the composition of the existing building and identified multiple layers added to one another over time. These additions had compressed the living space since the original construction dating back to 1880. Inside the attic, the architects found that the current flat roof was built on top of a former sloped roof together reaching a thickness of over five feet which was mixed in with layers of tar. Through a subtraction process and by replacing the existing structure with new joists, we gained 5 feet of space, therefore making up a 13 foot height on the third floor. The space of the new master bedroom and artist studio gained in natural light with the integration of a ribbon window where the attic was.