I have an extremely hot loft, which is keeping the top half of my house hot
as well. I'm running 2 large air conditioners upstairs, but the heat isn't
escaping through the loft which is at least 10 degrees hotter. Downstairs is
around 5-6 degrees cooler than upstairs.

I don't have a loft skylight (nor the will or cash to install one), so does
anyone have any ideas on how to cool the loft so that I can get rid of some
heat upstairs?

Thanks!