I've actually got Covid myself at the moment! Had it for about 8 days now. I've had the booster too (as I work in a healthcare setting). I know the plural of anecdote is not data - however for me, and all my compadrés who also have it and have had boosters (Moderna mostly) it is nothing more than an inconvenience - heavy cold vibes. I have two friends who declined the vax (not rabid anti-vaxxers, just didn't trust the government - on the same line as that old quote from Reagan - "there's two things you never want to hear when you get a knock on your front door - 'I'm from the government; I'm here to help!' " Ha! I respect their choices, however they are a sick as dogs right now, unable to walk from one room to t'other without breathlessness, etc. Ideally we should live in a communal society where we look after each other, or at least not do things which deliberately harm others. But we don't. The level of selfishness where I live is unbelievable, but that's what you get when you force 100's of different cultures together in a small space with no common ground. Every "man" for himself! I wear a mask in enclosed public spaces now I know I'm infectious, as a simple human courtesy. However, I also think it's endemic now, so once I test negative I'll get on with it and cease. (There ye go - hopefully a civilized answer with no need for ad hominems?)

ive made a few changes to put it correct and back to our std defence copy and paste it into mcol now. you do NOT file their POC in red.

Im also a bit confused about the whole installation, cement boards are usually fitted first, UFH fitted to boards, and then covered with 2 coats of latex smoothing compound. Floor covering on top. I'll be honest I didn't read the entire post so maybe I missed something. To me, screed is sand and cement. Latex smoothing compound (often called self leveling) is often mistakenly called screed also. I'm just putting my 2 pence worth in