Blackfriar quick drying mdf is a primer and undercoat especially designed for use on mdf its easy to use and dries quickly so you can prime undercoat and finish all in one day it can be overcoated with a choice of finishes including gloss emulsion and satins perfect for pre decoration and has a white finish application method brush roller spray coverage 14mlcoat touch dry 1 2 hours hard dry 3 days recoatable 4 hours