Acrylics vs. Oils

• Acrylics dry faster than most paints.acrylics image by Sirena Designs from Fotolia.com
  
  Oil paints and acrylics differ in their application, texture and composition. Acrylics are made when a powdered pigment is added to an acrylic adhesive. Oil paints are made by grinding pigments in an oil base. These basic differences influence the amount of time the paint takes to dry and the proper surfaces for application. All of these factors determine how the paints are to be used in glazing.
  
  

Acrylic Glazing

• Glazing with acrylics will build up a richness and depth of color. Acrylics must first be diluted with water or with a gloss medium. All layers of color do not need to be uniform, as multiple layers may be added to correct color. When glazing with acrylics the next layer may be added almost immediately, as this paint dries quite rapidly. Acrylics can be applied to nearly any surface.
  
  

Oil Glazing

• When glazing with oil paints, the glaze should be thickened by adding resins. A textured canvas should be avoided, as the glaze will gather in the weave. The lightest colors are traditionally added first, followed in order by the next darkest. Between coats the paint should be allowed a week to dry. Glazing with oil paints in a tedious process, but the finished project is rewarding.
  
  

Benefits of Acrylic Glazing

• Unlike oil glazes, acrylic glaze will never crack or yellow. Over time any painting will collect dust and dirt on its surface. With an acrylic painting, the picture may easily be cleaned with a cloth and diluted soap and water. For an oil painting, however, it is best to have it professionally cleaned. The varnish must be removed from the oil painting in order to clean, destroying the original glaze.
  
  

The Future of Oil Glazing

• The development of new oil paints, such as water-based oils, is changing the way the medium is handled. Approaching oil glazing should now be considered a different technique for each variety of paint.