You can frame the cupola on top of your existing roof but be sure you have solid blocking under the outside walls of the cupola.
Framing hip roof cupola.
The framing for this roof is a symmetrical hip roof with large overhangs and a cupola.
Screw the hub to two of the rafters and fasten the other two by driving 3 in.
Join the rafters using a 6 1 2 in.
This makes the framing a bit more complicated but it accomplishes the owner s goal of an unrestricted view of the cupola from the interior of the building.
This blocking will transfer the load of the cupola to the roof trusses or to the roof rafters.
This video explains in detail how to build a hip roof.
Screws through the rafters into the hub.
In order to allow for the cupola the framing of the roof does not extend to the peak.
In this video i will show you how to cover the roof of a cupola with sheet metal.
Good directions carlisle 36 in x 49 in white vinyl cupola with copper roof.
Piece of 2x2 as a hub.
These are pretty easy to frame.
Most cupolas i ve seen have a hip roof.