I was recommended a screed company, I was told they are absolutely shit hot, I met the main man and he knew what he was talking about, I asked about screed curl at the edges and covering the screed to slow down evaporation.
he said it wasn’t necessary.
so I did some more reading and asked a few questions.
they did the screed, an hour after they had gone I hosed it down with a very fine mist spray, I then covered it in polythene and also covered all the windows to stop the sunlight coming in.
the result is I have the flattest most level screed I’ve ever seen.
you need to satisfy yourself how it should be done, and any short comings in your opinion you need to make up.
buy the polythene and install it yourself or do you due diligence and insist on a curing agent.
if you think they are good why do they not want to cover it ?