Where can I find reflective material to make curtains?

Question

I am trying to find yardage of reflective material to make linings for my curtains to keep out the hot afternoon sun. The material I am looking for is similiar to that of tinfoil or those reflecting sun shields used in car windows. Does anyone have an idea where I can find this type of material or the techological name for it as I am not having much sucess typing in "reflective material" in my search engine. Thanks

Answer 1

If you can't get the film, Joann's Fabrics has a window insulator that is more of a pull down shade that is insulated and reflective on one side. It is magnetic on the edges and would be good for either cold or hot weather. It's in the upholstery section, usually on the back wall.

Answer 2

Are you looking for mylar? The stuff 'mylar' balloons are made of is a form called aluminized boPET film.

You could use the window film. Either lightweight material will likely need weighted at the bottom to hang.