True, the road marking paint I use every so often for symbolic signage and demarcation has a thinner you can use to clean the brushes and rollers it is applied with, or to thin it down for spray application. The thinners costs the same per litre as the 5l of road marking paint. I consider brushes and rollers along with paint trays that are going to be used with this paint as disposable items. It is cheaper to go and buy the cheapest packs of brushes ( and work them a little in turps to get the loose bristles out if you really care about the work you are going to paint, not a problem if it is tar) and use them one brush per job, or one brush per hour if you are going to be using a lot of paint. Only paint I have met that is touch dry in under 3 minutes, it almost dries on the brush while you are applying it.