Mansard Roof Construction Details

It depends upon what type of design customer wants to implement.

Mansard roof construction details.

Mansard is a four sided roof with double slopes on each side so its sides can either be curved or flat. The low downward slope of the mansard roof line acts visually to reduce the scale of a building and helps to eliminate a boxy appearance. Simply put the mansard roof also known as the french roof or curb roof is a hybrid between a gambrel roof and a hip roof. It is similar to a gambrel roof but differs in that it displays the same profile on all sides whereas a gambrel roof has vertical gables at either end.

The mansard is particularly well suited to renovation work on pitched roof houses because the upper story can be enlarged without adding extra height to the structure. If you are not familiar with a gambrel roof then let us first explain its architecture in brief. A mansard roof also known as a french or curb roof is a roof characterised by that fact that each of its four sides has two pitches the lower pitches being steeper than the upper pitches. Mansard roofs are for the most part based on standing seam or batten seam construction.

You can consider gambrel roof to be a modified version of a gable roof. Establish the correct number of courses of mansard tiles to maintain minimum headlap of 65mm. The ends may alternately attach to the base flashing where a change in roof slope occurs. The lower ends of the pans are typically hooked over an edge strip to form a drip.

Mansard roof with mansard tiles ensure that a clear ventilation path is maintained from eaves to ridge where insulation is positioned between the rafters.