I am in the process of replacing the 3 1/4" baseboards in my 60s era condo with plaster walls. When I removed the old boards in lieu of 2X4 studs there is a 2X2 runner along the base of the wall that the boards were nailed into.
My question...I want to install 5" baseboards for a nicer look. Is it better to nail the new baseboards into the 2X2 at the bottom of the board and use an adhesive such as liquid nails to secure the upper portion of the new boards or would it be suffice to just nail them in and use caulk to cover any gap? To nail the upper portion of the baseboard I would be nailing into a plaster wall wich I doubt would hold very long.
Or...is that just too daunting of a task and I should just put 3 1/4 back in?!!