Thanks for the comments. It is really appreciated.
The roof line is established, pieces cut, welded and ground smooth to complete the roof framework. The top will be covered with wood. Since it has to curve in two directions, front to back and slight crown side to side, the material will have to be somewhat flexible. I also want a radius on the edge of the wood all around.
The plan is to use three layers of 1/4" plywood. The first layer will be installed with glue and screws. then a second and third layer will be added the same way. Total thickness of 3/4" which will shape into a nice radius around the edges. If anyone has another approach, speak now or...
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