Canvas - Priming the Canvas

Priming

Canvases can be primed with either oil or acrylic primer. Acrylic primer is more versatile, flexible and, when applied properly, forms a good, non-acidic barrier between the paint and the canvas.

When dry, oil or water-based paints can be used on its surface. For extra protection a soft gel size can be applied before the coats of primer. There are many gels, which can be directly applied on top of the primer which will give various surface effects prior to painting.

If a permanent, safe, flexible surface is required, use materials designed for artists.  Do not be tempted to use emulsion or any other household paints. They may be cheaper, but they are designed for rigid substrates and will eventually crack and fade, ruining your artwork.

Tools for the Job
A brush or a roller.
A plastic container.
Some fine grade wet or dry paper.

or the first coat of primer, mix about 10% water to the primer in a separate container and stir well.

For larger canvases a roller will give a more even surface.
If using a brush, ensure the primer is worked thoroughly into the surface.

Apply the first coat in one direction only.

Allow at least 6 hours to dry.
If a smooth surface is required, sand down with a fine grade wet or dry paper between coats.

When thoroughly dry, brush the second coat at 90 degrees to the first and all other layers at 90 degrees to the previous layer.

A minimum of three coats is recommended.
For a smoother surface apply more coats giving a light sanding between coats.