How do I bathroom / kitchen / extension? etc.

Holy fuck.

Lessons:

• Don't mix 100kg by hand. Get a whizzer thing.
  
• Smaller batches. This was partly because mixing by hand and concerned about time from activation to setting - but gosh that was heavy.
  
• Cover everything you don't want splattered.
  
• Close the window before you can't reach it.
  
• Beer after, not before.
  
  

But otherwise, think it went OK. Far from perfect (can spot a couple of small bubbles in one corner which I suspect are lumps - to be covered by a bin unit so very few fucks given). We'll see what the morning brings. It's still not perfect on the big ridge but I may see if I can either sand/grind that down or just stop caring - one or the other.

That corka stuff I mentioned says it doesn't need underlay - would it be beneficial to put some down anyway to help mask minor imperfections or would that actually be counter productive?

https://www.colourflooring.co.uk/pages/corka-installation