heat

Hi all, Left one of my render finishes (k-rend Silicone K1) late to rub down and it’s now set within 8 hours due to the extreme temperatures above 30 degrees and it has an uneven finish. Has anyone ever used a sander to fix this?

Strange one today. Over board and skim. So hot I thought.. Right.. 1 coat of gardz on board and banged on the multi. Done in one hit and hanging really wet. To wet to be honest as took 2 hours 15 to complete. I never set out to do in one. I normally do board in 2 hits. Plastering is a little odd...