Why should an Acrylic painting be varnished?
As the acrylic film approaches it final dry state, the last few evaporating water molecules leave micro-pores in the film. These pores cause the film to feel tacky, even when fully dry. The micro-pores remain open indefinitely, meaning that the porous acrylic film can freely accumulate dust, grime, and smoke from the atmosphere. While that grime may not seem to be much over a week or a month, it adds up over the course of years. The best way to protect the painted acrylic film is to varnish. Winsor and Newton produce a range of acrylic varnishes. For further information on Acrylic Varnishes click here.
