Mansard Style Roof Extension

The dormer window provides an extra floor space called a garret.

Mansard style roof extension.

Mansard extensions are often slightly pricier than dormer or hip to gable conversions as the structure of the roof undergoes significant alteration in order to create the 72 degree angle. The design approval and erection of the mansard roof extension took three years but robinson leigh have succeeded in updating a tired looking 1980 s mews house with a new sophisticated modern exterior that quietly complements the surrounding properties. Most mansard roofs feature several dormer windows for optimal light and ventilation. Often the existing roof will be inverted so the roof is a valley v.

The steep roof with windows creates an additional floor of habitable space a garret and reduces the overall height of the roof for a given number of habitable stories. Since the upper slope of the mansard is flatter it can rarely be seen from the ground. To make a loft extension workable in this instance it will be necessary to remove the existing roof build up the existing party walls and build a new structure set back from the front wall with the front and rear walls sloping inwards. Mansard roofs are most common on terraced victorian and georgian properties particularly in london.

This is known as a mansard roof extension. If you are not familiar with a gambrel roof then let us first explain its architecture in brief. A mansard or mansard roof also called a french roof or curb roof is a four sided gambrel style hip roof characterized by two slopes on each of its sides with the lower slope punctured by dormer windows at a steeper angle than the upper. You can consider gambrel roof to be a modified version of a gable roof.

However due to the popularity of mansard conversions many companies will offer competitive pricing for this work.