I've been thinking about starting my HT Attic room for quite some time. My wife gave me the go ahead today. I have a large open space in my attic that I have been using for storage for a while. The size of my room is going to be 10 X 20 with 9ft ceilings. I could go 12 X 20 but I have a large roof support post coming down in the room. I was blessed that the flooring is already down (The builder said it was built with an addition in mind, and it shares the same 2X10 trusses as the upstairs bedroom does).
Do you think the building inspector will make me use the exterior wall and put a window in, or will I be able to build 4 new walls and not do the window. I am doing everything except HVAC, and electrical myself. Thankfully the upstairs already has its own AC unit and all they will have to do is run the vent tubes to the room (The AC unit is in the attic and will be about 12 feet from the room). I plan on doing this in 4 stages:
#1 Room Construction- Building room, insulation, drywall, lighting, and paint
#2 Electronics- Projector, Screen, Audio, Furniture
#3 Hallway walking to theatre
#4 Extra Storage
The Roof of the Attic (20+ ft high)
The Main part of where the room will be. Note the roof support truss coming down. I could go an extra 2 ft wide and build a column around the post, undecided on that.
Attached is a video of the room I will be building in. It starts at 3:30 for the upstairs. Any creative ideas with the step up when you first walk in the attic? I can not change that as the downstairs hall has 12 ft ceilings and the rooms surrounding it have 10.