I got my shade cloth installed yesterday and so far the temperature inside is about 20 or so degrees cooler than what it was before For instance on the west side where my orchids are before installing it the temp would be 80 outside and 100+ at the orchids. Today it was 85 outside and 87 at the orchids and that was at 3:30pm. I'll probably keep a log for a few days just to see how good it's working.