In cross section the straight sided mansard can appear like a gambrel roof but it differs from the gambrel by displaying the same profile on all sides.
Mansard roof cross section.
At the lower roof the standing seams are laid flat 8 from the roof break folded 3 4 and secured with copper cleats spaced 12 o c.
Also in some locations there is a restriction set in the height of the mansard roofs in order to protect any structural damage.
Change in mansard slope.
The earliest known exampl.
Jun 5 2014 cross section of a mansard roof wikipedia the free encyclopedia.
So if you are planning to use the mansard roof design you need to research thoroughly about the local laws that apply to this style of roofing.
Europeans historically did not distinguish between a gambrel roof and a mansard roof but called both types a mansard.
In the united states various shapes of gambrel roofs are sometimes called dutch gambrel or dutch colonial gambrel with bell cast eaves swedish german english french or new england gambrel.
Mansard roof type of roof having two slopes on every side the lower slope being considerably steeper than the upper.
The steep roof with windows creates an additional floor of habitable space and reduces the overall height of the roof for a given number of habitable stories.
This detail shows the condition where the bottom of the mansard meets another roof.
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A mansard or mansard 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.
Jun 5 2014 cross section of a mansard roof wikipedia the free encyclopedia.
The upper slope of the roof may not be visible from street level when viewed from close proximity to the building.