Greetings!, my wife and I are about to start our first major home IMPROVEMENT project (all the other projects have been REPAIR).
For background; we have a 1929 story and a half Tudor home in Minneapolis. The half story is almost completely finished except for a 11'x10' space off of the master bedroom that was never finished. The current floor in there is 2x10" boards running the wide way, the insulation below it is vermiculite so I covered the floor with rosin paper to keep dust down.
Our plan is to finish this space and use it as a walk in closet. I have paid for a permit to begin construction. I have a decent amount of tools for the project and have intermediate wood working skills. The complexity of this project is around a couple issues, mainly ventilation and how one side of this space is shaped.
My plan in this order:
I plan on nailing down some 3/4" plywood over the floor we plan on using (not then entire floor)
Construct a knee wall:
Nail down a 2x4 bottom plate for the knee walls on each side.
Nail a 2x4 to the existing rafters to allow for a 4ft knee wall
Miter cut the support 2x4s to join the bottom plate with the knee wall top
Measure where the ceiling height should be and cut 2x4s to connect the rafters (should these be mitered to fit between the rafters? or just nail them to the sides? doesn't matter?).
Join the knee wall to the new ceiling 2x4s.
Have contractor install a few outlets and overhead light.
Insulate, moisture barrier and drywall.
Have contractor mud and tape.
Install overhead light fixture.
Install floating bamboo flooring.
Build in some storage TBD.
Does my general plan sound correct? Does the order look good?
What size nails do I need to use for framing and also securing the plywood to the floor?
Is 3/4'" plywood the correct subfloor? Should I go thinner?
Here are some photos and plans of the house: