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I recently tried aluminum painting panels for a small oil painting sketches and quite liked it. I did some research on these panels and they seem quite promising and to offer advantages over many other painting supports from the archival point of view.
I recommend you take a serious look at these if you are a professional selling your work.
An Introduction To Painting On Aluminum Panels
A more recent type of painting support as an alternative to traditional canvas or linen are aluminum painting panels. These are thin panels of aluminum that have been prepared specially to receive paint. Aluminum art panels are quite rigid and relatively lightweight painting surfaces.
Two Approaches To Using Aluminum Painting Panels
There are basically two ways of using aluminum painting panels:
- Paint directly on the surface, after it has been primed.
- Paint on traditional linen or cotton that has been glued to the aluminum panel
The Benefits Of Painting On Aluminum Panels
Painting on an aluminum panel has many key advantages. The first two of these makes it an idea choice if cost is not a key issue.
- stable with changes in humidity or temperature
Aluminum painting panels react very little to changes in humidity and temperature. This is in contrast to traditional wood panels and canvas which both expand and contract with a change of temperature or humidity and so damage the painting surface. This is the single most important feature of aluminum painting supports that makes them more archival than other painting supports. This means you can store them in damp studios where traditional painting surfaces would warp.
Unlike MDF and HDF (medium/high density fiberboard), aluminium painting panels will not easily damage if they are dropped.
- does not release gases
Unlike medium and high density fiberboards that have been treated with formaldehyde, aluminum painting panels will not release gases over time. See https://pubs.acs.org/doi/abs/10.1021/acs.est.5b02217
- exposed areas won’t tarnish
You can leave areas on aluminum painting panels exposed, and the material will not tarnish due to its resistance to oxidation.
Aluminum panels are quite lightweight and so ideal for large artworks which need to be transported. However for plein air painting, they are heavier then gatorboard panels to which linen has been glued.
Aluminum panels are more expensive than panels made from MDF and HDF (medium/high density fiberboard).
How To Prepare An Aluminum Painting Panel
You can buy these panels already ready to paint on from an art supply store. In that case the panel has either a primer coat or has linen/canvas glued to it and you do not have to do anything. Just go ahead and paint on that surface.
But if you have just bought the aluminum panel and it is not already prepared for painting on, follow these steps:
- The first step is a very light scuff sanding to increase the adhesion of the primer. Use a fine grit sandpaper (at least 320). It is easier to wet-sand the panel to avoid getting dust everywhere, so use special we-sand paper. It is faster, the paper doesn’t clog up, and there is no dust.
Caution: Do not sand all the way through the polyester coating, something that is easy to do. This is a bad thing. Just lightly rough up the surface (it should be just a little more matt than it was when it was new, but it will still feel smooth) but do not expose the aluminum.
- Once the sanding is done and the panel is clean (try not to touch it with your hands) make sure it is dry
- 3M, the company that manufactures the panels (3M) recommends a thin coat of DTM primer before you prime it with an oil ground. This DTM primer is formulated to bond to the polyester coating on the panel and provide a surface that will take the oil primer better. A one gallon can cost around $120 but it should prime a lot of panels. One light coat is enough.
- Apply primer coats to panels
Tip: finish with light brush strokes in random directions so there are no distracting vertical or horizontal marks that might show through in the final painting. When you use a linen, or canvas support, the texture of the material hides the brush strokes of the primer coats, but all these marks are visible on these very smooth aluminum panels. A good primer is Rublev Lead Oil Ground (from Natural Pigments in California). I like an oil primed surface to paint on because it has just the right amount of absorbency and takes the paint beautifully.
Caution: The primer has lead in it so take obvious precautions such as wearing gloves to avoid absorbing lead through your skin, and not eating it! Apply two thin coats straight out of the can and let the primer dry completely between the coats.
Thank you for taking the time to read this article. I hope you find it useful. If you would like to get free painting tips by email, please sign up for my free tips newsletter.
Barry John Raybould
Virtual Art Academy