How to Paint Over Silicone Caulking How to Paint Over Silicone Caulking
Paint doesn’t adhere to silicone caulking well. But, that doesn't mean adhering paint to silicone is impossible. If you’ve already used silicone-based caulking in an area you’d like to paint, there are a few things you can do to make the paint adhere better.
Step 1 – Sand the Caulking
Because paint won’t easily stick to silicone, you must first roughen up the silicone surface with heavy-grit sandpaper. Make sure you don’t pull all the silicone up or off; just make the surface even.
Step 2 – Apply Spackling Compound
Paint will easily stick to spackling compound. Apply a thin layer of spackling compound over the roughed-up silicone. If you don't have spackling compound on hand, consider making a homemade spackle. Then, apply the spackle with a putty knife. Allow the compound to dry completely.
Step 3 – Paint Over the Silicone
Once the spackle has completely dried, you can paint over the silicone. Use an oil-based paint for the best results. Eventually, the paint will peel from the silicone, but it should last 3-5 years. Take your time while painting. Paint in short sweeping motions with a small paintbrush, so that you can see your work as you go and catch any areas you may need to sand and spackle again.