I have a double hung door that I rarely open. I might open it once or twice a year. It is there more for looks and doesn't really flow as an access door in/out of the house. It has some small spots where the door seal has either broken down or for whatever reason lets a little stream of cold air in. I want to seal it up without opening the door (door is hard to open, harder to close) and replacing the entire seal. I didn't want to squirt a bead of caulk in as that would possibly be problematic the next time I tear it open and try to close. I'm thinking of pulling a cottonball apart and stuff it in there. Any better ideas?