I have a tilled dormer Photo 1. There is an internal wall of no value ,unless it is constructional, that is a drop from the slope of the roof to the floor at the cheek of a dormer Photo 2. I cut out a hole and looked form the inside and the inside of the corner is covered with plywood so I could not see the construction Photo 3. Under the edge of the plywood there is no signed of support Photo 4. So I cut a hole into the edge of the wall to find a wood. Photo 5. So the question is - Is this wall constructional or can I remove it with no fear of the roof falling in?