Hardboard.
One eighth inch thick masonite (hardboard) panels make excellent supports to paint on and are archival if treated properly before starting your painting. The Mona Lisa by Leonardo da Vinci was painted on a poplar wood panel back in the very early 1500’s. It has withstood the test of time.
To prepare an ‘untempered masonite panel’ for painting it is important to seal it. This is done by applying three coats of high quality gesso front, back and all edges. Do not use tempered masonite because it has oil within it and it will leak through to the paint. Treating both sides the same prevents warping. It’s called balancing the board.
Gesso is also available that dries with a tooth rather than smooth if desired. I use both.
Many artists use masonite, including professionals. It is more durable and archival if treated as above. It stores easier and is less susceptible to damage. A frame is needed if hanging the finished work.
I buy old pictures at used furniture outlets or flea markets and use the frames. Frames can be painted or treated to match the artwork if desired.
Oils or acrylics work equally well on treated masonite.
I have an oil painting size approx 30 x 40 inches I painted when I was about 14 and it’s still in perfect condition today. Using one eighth inch thick masonite, no gesso was applied. That was over 70 years ago. It was never stored anywhere but in a basement or storage room. It’s proof of how long a painting on masonite can stand the test of time, even when not looked after.
Hardboard panels or masonite are available in any lumber yard and they are not expensive. They will cut it for you in sizes you need for a minimum extra charge. A standard 8 x 4 foot sheet will yield many panels, depending on the size of your paintings.
