Fair amount of termite damage in 2x4 appearance boards in ceiling of porch. Some of it's pretty deep so I'd want to gob a lot of it in there rather than building up layers. Would bondo or durham's rock hard be better for something like this or maybe some of that vinyl ready-to-use spackling that Lowes and Home Depot have?
Oh, and can any of those be applied over a painted or stained surface?
Thanks.