glazing over the spackle texture

Glazing Over the Spackling Texture on your Mixed-Media Painting

Most of our second mixed media class was about creating textures with spackling, with the remainder being about glazing and then dry-brushing over the plaster/spackling textures.

Here is the glazing process:

  • First apply acrylic medium over the plaster/spackling texture and let dry.
  • Mix up colours with either acrylic medium or ‘glazing’ medium, and run the colours over the spackling texture.
  • It is important to cover every single last bit of the whitish spackling to keep the white bits from distracting the eye.
  • If you do not coat it with medium first the colours to be will be sucked into the spackling (see below). Be aware that this is a completely different effect, and will have a lot of potentially distracting white texture.
how not to glaze over plaster texture
how NOT to glaze over plaster texture

Below I used a coloured glaze, a mix of medium and paint (Ultramarine Blue and Quinacridone Red), and applied it over the spackling texture with a fairly soft brush.

Holyman with purples, blues and pink glazes
holyman with purples, blues and quinacridone red glazes over the plaster texture
thalo blue, dioxanene purple and liquid acrylic colours on textures separated by masking tape
thalo blue, dioxanene purple and liquid acrylic colours on textures previously separated by masking tape

Most of the ‘original’ mineral pigments tend to be fairly opaque, and need a fair amount of medium added in order to use them as glazes.

For transparent blacks Jeanne suggested we use Bone Black (also known as Ivory Black); for transparent whites, Zinc White.

The newer chemical colours, with chemical-sounding names such as Quinacridone RedDioxazine Purple and Thalo (Phthalocyanine) Blue (or Green), thin out while holding colour intensity and make excellent glazes.

‘Fluid’ or ‘Liquid’ acrylics (these descriptors depend on brand) work especially well when you want to use a more opaque mineral colour like Burnt Sienna or Raw Umber. Below is a glazing mix consisting of Sepia, similar to Burnt Umber but transparent (by Golden), and Payne’s Grey (by DeSerres). Note that there are many other brands available.

sepia and payne's grey 'fluid' acrylic glaze on sand spackle
Sepia and Payne’s Grey ‘fluid’ acrylic glazes on medium-coated sand/spackle mix

Multiple layers of glaze add depth to a painting.

The thing that I’m finding most difficult about working with glazes is that you start with a colour that is lighter and different from the colour you finish with and the layers build up via ‘optical’ mixing. For example, you might start with a blue, then add multiple layers of yellow that will ultimately turn the colour into a very rich green. It’s COMPLICATED! There are a lot of things to try out and experience here…

Mixed Media Class Experience:

Class 1 Image Transfer

Class 2 Textures and Struggles

Our super instructor’s site: On her site she has her work and offers lots of different workshops and courses.


One thought on “Glazing Over the Spackling Texture on your Mixed-Media Painting

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.