This is a structural extension which projects vertically from the slope of the existing roof creating a box shape.
Loft extension roof types.
This type is also known as a simple flat roof dormer and is the most popular of the attic conversions.
They are suitable for pretty much any house with a sloping roof.
A dormer loft conversion is an extension that protrudes from the slope of the roof.
A dormer is a structural extension which builds vertically from the slope of a roof with a box shape result.
A dormer loft conversion is an extension to the existing roof that projects vertically from a sloping roof creating additional floor space and headroom within the property.
A mansard loft conversion is similar to a flat roof dormer the main difference being the front slopes at about 70o.
The most common style of structural loft conversion these are an extension to the existing roof building out sections with vertical walls from the roof to add floor space and room for windows.
This type of loft conversion is most popular in traditional semi detached houses although great in any hipped roof enabling the new stairs to go over the existing stairs minimising lost space in original living area.
There are three basic types of structural alterations.
Most common type of loft conversion.
Planning permission often not needed.
Internally a dormer has vertical walls and a horizontal ceiling.
Dormers in particular flat roof dormers are the most popular type of conversion.
This type of loft conversion involves constructing a vertical wall from the bottom of the sloping roof.
Can also be gable fronted or hipped roofed.
A flat roof is then built to meet the vertical wall in order to give maximum headroom in the loft extension.