How long can I leave a paint brush and roller sleeve submerged in water without damaging them?
The way I've done this is not using water, instead take the roller or brush and put in a big ziplock bag and stick in the fridge. yes it may look gross in there but it won't be a problem to return to continue painting. It won't be able to dry as much. Certainily it won't dry out. Seems like my wife left one in there for a couple days to return AND multiple times too.