I definitely recommend that you use a primer / sealer prior to painting MDF. Because MDF is a wood composite, it’s very porous. As a tole and decorative painter, I like to use a brush-on acrylic polymer such as GAC 100 by Golden for priming and sealing. Can I paint melamine shelves? what kind of paint do you use on melamine.

Do I need to prime MDF before painting?

Priming the MDF properly is very important for, as well as sealing it ready for painting, it prevents the compounds being released. It is always a good idea to wear a mask when working with MDF, even if not actually sawing it.

Can I paint directly onto MDF?

You can use your preferred paint on primed MDF, and you can apply the paint finish with your preferred applicator, be it a brush, roller, or spray gun—whichever best suits the project. Once the first coat of paint feels dry to the touch, assess if your work needs a second coat.