Question for Rod(NH)

thanks

I really can’t speak to your question on urethane primers and sealers because I have never used them. My favorite primer is PPG's DPLF 2 part epoxi. It can also be used as a sealer. It is iso-free but is quite expensive at about $135/gal RTS (ready-to-spray). This stuff is probably similar to the OMNI epoxi Cliff mentioned although I don't know about cost of the OMNI product...would think it would be somewhat less expensive due to the OMNI line as compared with the now parent PPG product line. My guess is that the advantages of a urethane product as a topcoat (increased color retention, gloss and chemical resistance) are not particularly relevant for a primer where adhesion to bare metal and corrosion resistance would be dominant. So you might want to consider the less expensive non-urethane as a primer and primer-sealer. Cliff is right about the primer-surfacer on the sheet metal. There again, I would need convincing that the urethane product was worth the extra cost over the non-urethane one. I use DuPont 131S acrylic primer-surfacer with good luck under acrylic urethane. I don't recall the cost but it is not real expensive stuff.

Rod

Thanks again