If you re installing tongue and groove boards over drywall or plaster especially it s a good idea to install 1x2 battens and fasten them directly to the framing with 2 1 2 in.
Repairing tongue and groove ceiling.
Once the board is sawed in.
If you have to install new boards you may have to cutthe top part of the groove off to get the board back over an existing tongue thiswill require a limited amount of surface nailing when these boards are reinstalled.
With a circular saw saw down the center of the damaged tongue and groove board.
Place a pry bar between the baseboard and wall.
This can often be done by cutting off the tongue to get these boards down and then ripping a small amount of material off the boards to allow for movement.
Installing the new boards was way easier than taking the old ones out fortunately cut them to length with the jigsaw seat the groove over the tongue of the previous board nail through the tongue so the holes don t show repeat.
They ll give you a much more solid nailing surface.
Once there is a gap between the board and the wall place wood.