Drywall ceiling - furring channel?
Our basement main room is 30 feet long and 14 feet wide, and the ceiling has 9 inch deep spruce joists at 16 inch centres. We want a drywall ceiling, but the bottoms of the joists are not completely level - there is about 1/4 inch variation in the level.
We intend to install furring channel or resilient channel onto the ceiling joists so we can obtain a flat ceiling. How do we install this metal channel? At the edge of the ceiling and then at what spacing? Installation advice would be much appreciated.
best regards, Peter-A