My sons painted door sticks when ever it is closed for more than an hour. Whenever we open the door, it makes an awful noise which usually wakes him up. I've tried sanding the door where ever it touches the frame to no avail. Any other suggestions?
Something that has worked for me on sticky, painted wood windows and several other things is parafin wax. It doesn't make a mess and doesn't get on your clothes, etc. It's the same stuff used for home canning jelly, etc. You can get it at hardware or grocery stores at the right time of year. I've found that rubbing some on the surface of my table saw allows the wood to slide smoothly without sticking. It's cheap, too.