In warm, dry conditions, Cetol Filter 7 is touch dry within a couple of hours. Can I apply another coat the same day?
The simple answer is NO. Water-borne stains, paints and emulsions can be overcoated as soon as they are fully dry and two coats can be applied in the same day. Solvent-borne coatings undergo a two-stage process – firstly the solvent evaporates away (within 2-4 hours), leaving the surface dry to the touch; the coating then undergoes “oxidative curing”, i.e. the resin/binder within the coating reacts with oxygen in the atmosphere to give a chemically hardened (or cured) surface. This process can take as long as 12 hours and it is therefore essential that the coating is left to dry overnight before overcoating. Applying the second coat too soon can lead to wrinkling and a soft finish which can be easily damaged.
