Hope you folks will help me out on this one:
I have run into an interesting situation I need your help with. I am going to spray paint two very large barns. The larger of these two barns has been completely restored. The client used knotty pine wainscot and soft, rough sawn pine with knots as replacements for the original barn boards.
I suggested we use an oil base, solid stain (client wants white). Two coats of sprayed stain, in my mind would have provided excellent long term wear. Although the knots would bleed through without the use of special primers, this approach seemed reasonable and affordable.
The client has had several weeks to live with a test area I did. He is not sure at all he wants to live with the knots. The barns are being sprayed, spot priming is out. So, the questions are:
Is there a primer that can be airless sprayed with no back brushing involved that will prevent bleed through? The larger barn is 40x60x60’ high. Can I spray a shellac based primer without killing the internal parts of my airless? Do you suggest a pigmented shellac or are there other products that will meet the specs I indicated? The barns can be brushed and rolled, but obviously at much greater expense. Can your make some recommendations for which products would be candadates for this type of work? Your responses are greatly appreciated.