Black Out Curtains, for Light/Heat

[ALEXB]

Couple years back I made "Black Out Curtains" to cover all the windows on my RV, for a trip to Alaska... which is quite helpful, as it is "Daylight" almost all day in AK, hence you cannot easily sleep. They are made of a Heavy Cloth Fabric (typically used for bench seats), and a Opaque/Heavy Black Backing, sewed together; and mounted on Nylon Tracks to wall.

Anyhow, I've come to appreciate how well these curtains also function to Keep Out Heat, especially in the daytime here in Florida... they make a Remarkable Difference, and when combinded with a 110V Squirrel Cage Fan (Harbor Freight) and a Opening at each end of your rig, amounts to a Darn Comfortable Daytime Environment! (even with High Humidity).

[GypsyDogs]

I have a set for my rear windows that are Dark blue on one side and white on the other. Makes my windows appear black-out from outside and reflects light inside at night- nice when using dim lighting. Or reverse them and they reflect more sunlight back through window during the day…held with magnets sewn into the seams to make it super easy to put up and/or change configuration.
My main cab curtains are slate on the exterior facing side (to look boring) and a subtle sparkle-dove gray on the interior facing side- again for recycling light and generally brightening the living area.