I am using a de-waxed shellac as a sealer for birch, maple and cedar wood (Dowel shape). I am looking for a paint (Pigmented opaque) that will strongly adhere to the shellac. This item is used in the exterior environment.
Which type of paint does everyone recommend? I would like to stay away from oil-based if possible. Someone mentioned to me that maybe I should mix my own shellac and use water base lacquer? If there are any coatings experts/chemists/specialists, I have a sample of a product that has a very strong bond that I am trying to replicate. Any input would be helpful
From contributor L:
Shellac is not an exterior product. Using this as a base coat is asking for failure.
My limited experiments with it (on exteriors) leads me to believe that I can expect it to outperform any other reasonably priced alternatives. The adhesion is quite excellent if you have a little tooth on your base and give it ample time to cure. Shellac is commonly used in exterior applications and will be excellent as you intend to use it. Just don't over-saturate to the point that you lose the natural tooth of the wood textures. One moderately light coat of two pound cut will be enough to stop most grain raising issues and yet leave some texture for the next coats.
Breakthrough is an excellent self primer too but it will raise the grain a bit (being water based). Polyurethane enamels would also be excellent though their slow drying character makes them difficult for most pros to use. The 2K polys would be good, though this is a higher cost option, however they do solve the slow drying problem.