Question on pink board

Is it safe to assume you are writing about the Pink Extruded Foam Boards, known as insulation?  Sunlight, rather the ultrviolet part of it, will slightly affect the surface. Nothing detrimental, it will not disintegrate in your lifetime.

However, do you want to be known as the guy with the insulation in his windows. Better to place a layer of at least sun resistant plack plastic, like a trash bag, in the opening first. From the outside, the black would be less obtrusive than the pink. Better yet, use something closer to whatever you have over the other windows, I left my curtains closed while my picture window was blocked for the Living room layout and background.

Thanks for the information. I have a double window at the front of the attic and I wanted to place pink board across the windows so on the lower level so the sun would not hit the layout in that spot. Instead of black plastic would flat black latex paint work. Thanks Paul

Could you use room darkening drapes?

You really don't want anything that will make for extreme heat at the window.

Drapes are out of the question because the layout goes across the windows. So if black latex paint would draw heat what about white latex paint on the back of the foam board. I should mention that I am not covering the height of the windows completely just to a height of 8 or 9 inches...........Paul

Paul,

I might suggest that the outer surface be lined with a piece of reflectix, it is like aluminum faced bubble wrap, it will reflect heat and sun back to the outdoors, and wouldn't look bad from the outside.

http://www.reflectixinc.com/

If you need a small piece, I have some scraps, would be glad to mail you one, just contact me off line, email is in my profile.

Tim thanks for that offer I am just going to paint the backside of the foam with white latex paint which I have in abundance around here in the house. .................Paul

Home depot and others sell decals you can put on the window, that kind of look like stained glass but will do what you want, to keep the sunlight from heating up the track and such, you may want to look into it. We use it on a window in our bathroom that is next to a bath tub for privacy sake and it works great. You could also use black film like they use on car windows, if blocking light is all you want to do. 

Home Depot sells a spray for frosting windows. Rust oleum glass frost spray.  Lets in some light but blocks the view. 

Wanted to place that reflective silver film on the south facing windows at the old house and the glass guy said it had to go on the outer storm windows, not the inner house windows or the heat would be too high between the panes of glass.

A picture would help.

What about those mini shades or blinds that go against the window if space it tight?

Some home centers sell a foam board with aluminum foil on one side.  Probably not the pink stuff.

Bruce