Oh Yes! I bought one of those metallic cheap foil blankets - well actually, 3 for 5.99 on Amazon. Much as it pains me to further line bezos’ pockets and fund his private jet, etc.
I’m in a maisonette with east and west facing large windows. And a west facing back door to the roof which gets the full glare of the sun (but not as bad as the living room and kitchen, sigh).
anyway, the only place I can stick it without pissing off the neighbours is on the back door. Tried this today and it shaved a degree off the upstairs temp. It didn’t arrive til late so I’m still calling that a win.
Looks bloody horrendous, though. Like a crack den.