The supply air ducts were badly rusting and needed to be coated with a system that could withstand salt spray and high humidity conditions without corroding.
The surfaces were sand blasted the treated with Chlor*Rid to remove remaining soluble salts. Next, the surfaces were coated with SE-110-CI, a corrosion protecting primer. When dry, these surfaces were over-coated with SE-120 Protective-Skin coating, then top coated with SE-170 High-Gloss Surface Coating to provide protection from mold and mildew.
Prep (remove soluble salts)