Replying to Binding Glue and Removal Help?

So I got my new skis mounted a little while ago, but i took the bindings off and put them in my old skis (had those same bindings, so same holes, just screwdrivered them in) for summer skiing. I took them off my old skis and back onto my new skis because its also ski season. Do i need to cover the screws in like waterproof glue or something? Will water get in and rot my core? Or am i good? I wants these skis to last and can't have my bindings ripped out from a rotted core.