ytseman3 wrote:
The permalite is in the whole basement block, but only half the basement is finished with fiberglass insulation and studded walls with paneling. It also has a drop ceiling. The other half is just the bare cement block and permalite inside the blocks. To answer your question about the stairs being both return and delivery... the cold air travels down in the lower levels and heat in the upper. It's going in two directions, I have verified it with a lighter holding it at floor level the flame points downstairs then as i raise it higher the flame changes direction pointing up the stairs. It probably isn't the most efficient way to do transfer the heat but it seems to work fine for my house. I was thinking of putting registers in the floor upstairs but I have the drop ceiling and insulation between the floor joists. It really works quite well for my house, as the stairwell is located direct center of the whole house. It's only 1250 sq/ft upstairs so it's not a big house, it's only 1 floor and the basement. I don't have any windows open downstairs, and I get a nice burn. I think my basement has enough air infiltration to keep up with the stove, it's not completely under ground there is about 2.5 ft above ground level and some windows for air to leak in (they are old).
My house is about the same, I just took some pic's and I am about to download and post them. Now my basement is totally unfinished, the previous owner had a water pipe freeze so everything got removed except half bath in the center. I have a beautiful fireplace 6' wide 8' tall so I plan on refinishing. Have you thought of removing the insulation from your ceiling and using it on your walls and allow the floors above to warm as well. You can get light defusors that hang in the suspended ceiling wells and allow the heat to infultrate.