The Dormer Loft Conversion is the most popular type of loft. It creates an extension to the existing roof that projects vertically from a sloping roof. It offers a great extent of headspace due to its flat roof.
The Mansard loft conversion is created by extending the existing party walls brick-work with the back wall sloping at an angle of 72 degrees. This sort of loft conversion will display a flat roof.
This type of conversion used for hipped roofs, is also a very popular option as it maximises the space, and usually allows to add a couple of bedrooms with en-suite bathrooms.