While Anubis over at MTS has already posted a version of the M&G mansard set, I'll still share these since they contain the windows and the AL pieces.
Apart from the windows they can be found under the room sort category "Outside" in either Roof Decorations or Lawn Ornaments. The reason they can't be found if you sort by function is so that they won't be brought in the family inventory when you move. Made as wall objects (except the outer corners) so that they go down with the wall for better viewing.
125§ for the M&G pieces, and 76§ for the others. All pieces come in default wood patterns. Fully CASTable.


The windows each consist of two objects; the actual window and a window cover. They look awful separated:

I also made some patterns adapted from the original textures, and one adapted from the in-game fishscale roof. The three first are metal and the fourth wood.

Download links:
M&GMansardRoofBohemianRoofAddOn (You need the M&G set for this, since they share textures.)
MansardPatternSetMediafire folder if links above don't workUnRAR and place in mods/packages. Made with s3pe and PatternPackager.