Skylights, condensation, and black mold
Hi! I live in a prefab home with skylights in each bathroom (two bathrooms) and one in my kitchen. The bathroom skylights have had recurring issues with condensation and black mold forming on the ceiling around them. The skylights are recessed, so it's like having pockets in the ceiling that collect all of the heat and moisture.
In the colder months I find that covering the mold with several coats of mold killing primer takes care of it. I've also starting placing damp rid hangers in the skylights. Seems to help, but once the hotter months hit the mold starts coming back.
I don't have the money to tear the skylights out and replace the ceiling. If that's the only option then Im just gonna have to live with the mold. What are some cost effective things I can try? I was considering trying to seal off the skylight completely with insulation, a board, and some caulking. Would this help? What about improving air flow? Maybe installing a small fan in the skylight cavity?