How High Can You Build an Attic Stem Wall For Stick Built Rafters
In an unvented attic you can order high heel trusses in order to get enough insulation depth over the tops of the exterior walls but what is the best way to build a “high heel” stick framed attic roof?
Now, I plan on building a second storey “floor” on top of the main floor walls (with sheathing on top of the joists to act as the air barrier) so if I want about 20″ of insulation over the tops of the exterior walls is it best to build a 20″ tall stem wall on top of the attic floor at the eaves or is there a better way of elevating the roof rafters?
The one thing I worry about is the “hinge point” that would exist between the bottom plate of the stem wall and the sheathing on top of the second floor deck. Could outward force from the roof rafters cause this little wall to push out at the top and if so how could I brace it?
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