Skylight above shower

I had a piece of one inch foam insulation and cut it and made it fit snug.

Ditto to the foam.

I also cut a piece of foam to fit; I added a duct-tape "tab" so there's something to grab to pull it out.

I covered with a thin sheet of aluminum to block the light.
Does not block heat.

Paint the skylight with Krylon plastic paint.

I strung some heavy fish line using the screws that hold the molding in place and slip in a piece of double-foiled bubble wrap in there.

Why not just close the bathroom door? :h Nothing going on in there that I need to see. :E

We bought a sheet of lexan and some Limo Blackout window tint. Cut the lexan large enough to cover the opening and added two lengths of aluminum channel for it to slide in. Slide in when we want it dark, slide it back when we want it light!

I used a car window (spring loaded) roll down window screen and modified it to fit into the skylight. The type with the little screening holes that you fit onto the side windows on your car. I only had to modify the connections since the screen fit nicely in the skylight. You can open or close it to fit your needs!

Painted my last trailer bathroom skylight with krylon white plastic paint. It was clear to start. New trailer came already opaque.