Caulk can be an extraordinary thing or it can be dreadful. I was painting the bathroom radiator today and my paint would not stick. Reason? Silicone caulk. I knew what I needed to do next but was dreading it. I scraped, scraped and scraped. Removed all the silicone and voila. My paint stuck just like I knew it would. Now normally I would of removed the caulk but I admit I was lazy and hoping the paint would be OK. Yes, I was wrong.
I am the caulking queen and know the great things it can do. You have to know how to use it right, though. So here comes my tip for you. Make sure you use silicone for baths, showers,sinks. Areas that will get wet. Other places it is best to use all purpose or a non-silicone. Also, if you know you will be caulking an area that will be painted make sure you get the option that is paintable. All purpose is typically paintable. If the past owner of our home knew this she may not have used silicone for the radiator. She painted and then threw silicone right over.