I bought an older home which has some wood paneling that I've been caulking, Spackling, and painting. I've recently had some issues however with an area of the paneling where it was cut to install an air duct. Before installing a new grill, I filled the existing cracks with Spackle and painted over them.
I have noticed that since we have switched from using the AC to using the heat, cracks are starting to open up like crazy. I'm assuming this is due to the lower moisture levels in the air when using the heater as opposed to the air conditioning.
Does anyone have any suggestions for how this could be fixed?