/diy/ - Do It Yourself

if you have a big enough mirror, put it in the window facing out

or really anything reflective will work. Mirror is ideal

>>460429
Aluminum foil taped to the window so the shiny side faces the sun.

You can use a mixture of 1 part water and 1 part wood glue/Elmer's glue and glue the aluminum foil, shiny side up, onto a piece of cardboard that is cut to fit your window. Attach suction cups to the cardboard so you can place it and remove it as needed.

You can also use the foil bubble wrap stuff to do the same thing like in,

http://images.4chan.org/diy/src/1368277943730.jpg

>>460432
>>460433
Wouldn't reflecting all that light bother people on the outside? How about window shades?

white curtains and/or blinds

>>460433
>>460432
These seam pretty good. Thanks

>>460437
No one lives on that side of me, so that probably won't be a problem

go to any store that sells camping stuff, and spend $2 for one of those "survival blankets".

It is a cheap piece of aluminized mylar (plastic film). use a couple clothespins to hang it over the OUTSIDE of the curtains, so it reflects the window heat back out. That is about as good as you can do.

A shade INSIDE your room can still absorb and radiate heat.

Hang a shade outside of your house to block the window. They do that in California. Even if it heats up, it's on the other side of the glass.

aluminum foil shiny side out. Should do a good job.

>>460473
I can attest to the "survivor blanket's" effectiveness: we have a window that is built into the roof of the third story. The sun made that room unbearable in the summer so I got that blanket and put it up and into that window, problem solved.