an oval or round dormer window.
A round or oval dormer window.
Nevertheless she went to a dormer window in the staircase and read the letter once more.
The attic extension respects the existing roof geometry with the exception of adding a new dormer window joined with a terrace in front which creates a spatial expansion.
The architects added a timber batten-clad box and a steel dormer window to the rear elevation to provide extra space, and painted both structures to match the original structure's white brickwork.
A three-metre-high pivoting glass door protrudes from the sloping roof of this London house extension, which is clad in fibre-cement panels to match a refurbished dormer window.