New greenhouse - this may take some time and you might get bored

I use netting like that over my greenhouse JJB, I clip in place with clothes pegs, it works a treat at keeping that intense heat off.

I find it incredibly  versatile,  it's not clipped on at all.  It's actually just draped round like a shawl hooked on to the extrusions.   If its dull I can unhook it from the ridge with a long pokey stick and hook it back up if the sun comes out.  I'm pondering the way to use debris netting on the new one that will retain the versatility.  There's a lot in the planning stage.