Salt air corrosion on sheet metal duct
Why it happens here
Laurel Beach is right on the water, so salt air exposure affecting ductwork is constant. Salt accelerates oxidation on sheet metal, leading to pinhole leaks and surface rust. These leaks pull in unconditioned air from attics and crawl spaces, which brings in more dust and moisture.
Our approach
We inspect every accessible duct run for corrosion. Small leaks get sealed with mastic and duct sealant. For badly corroded sections, we recommend replacement before they fail. We also apply a protective coating in high-risk areas near the water.