My house is a 1940's lean to. It was expanded for more space with additional lean to rooms. The house roof is like a v at one point where the lean to's join. The kitchen was once a screened in porch and still has the 2x4 framing because it is weight bearing. Here is a link to a lean to addition that looks like my kitchen. http://www.hometips.com/wp-content/uploads/2012/07/lean-to-shed-construction-diagram.gif The living room is a lean to in the opposite direction of the kitchen. Where they meet is a V and all of the water from the roof exits there. Now the header and the corner beam are rotten. I want to build two temporary walls, get rid of the load bearing wall and replace the corner where the wood is rotten. I was thinking I would put in 16' LVL. My question is how do I build a temporary wall on slanted roofs? Do I affix studs to the rafters with just a bottom plate? Build a wedge of some sort? I cant get my brain around this construction. Could I build something like a temporary truss? Should this be in the wall forum?