I sprayed a decent size celing today with m Tec 100 didn't go as smoothly as I hoped layed up the first coat ok is very messy as ppl said it would we ended up laying up top coat by hand as we had a build up in the pipes and it backed up. I take it multi had built up and couldn't get threw the pipes. If we make the stuff wetter then it's very sloppy to trowel does this mean I need to leave it longer before I even put a trowel on it any help on timings and process would be appreciated