Creating a large master bedroom, a large en suite and a roof terrace This project involved removing the existing small Dormer and replacing it with a Mansard to create extra space. The client chose to use this new space to create a master bedroom and a large en suite bathroom that accommodates a home gym. The sheer amount of space achieved meant that our clients were able to incorporate some unique features into the design, including a mirrored door that slides into a wall to separate the master bathroom from the en suite and a roof terrace.