Parex

Using monoblonco on a job in couple of weeks over duro blocks chatting to guy working with on it says they will be micro first then straight on with the gear , question I have is at these temperatures am I best to spray in afternoon and scratch next day or can same day scratch be achieved with good weather conditions , only used the material twice so appreciate any advice, also last time used it needed new rs after spraying 70 bags is that common with this gear or was I spraying to thick
Thanks