if you put your hand under the DPM you will feel the heat the concrete gives off while curing
that heat trapped under the dpm will help massively
no harm leaving it covered for 48 hours Michael
LLL
I like to leave concrete for 48 hours this time of year
if you get on it too soon it scuffs up
the crack control joint only has to be 25mm deep
decent cut off saw and blade will do well sunday AM
LLL
IMHO
so who wants to see the finished workshop ? .......................................... well I do for one but the b**** thing is still in Lithuania not even leaving until Monday despite me being told it was leaving Monday the 1st and befor that being told id have it mid jan