Will spray foam stop rust?
The simple answer is no. However, let’s go into detail rather than just taking my word for it. Some people assume that when spray foam is applied to a metal surface (like a metal pole barn) that the moisture will get trapped on the surface of the metal, causing it to rust out. This is…
The simple answer is no. However, let’s go into detail rather than just taking my word for it. Some people assume that when spray foam is applied to a metal surface (like a metal pole barn) that the moisture will get trapped on the surface of the metal, causing it to rust out. This is not true.Click to see full answer. Also asked, is spray foam corrosive?No, spray Polyurethane foam insulation is non-corrosive.One may also ask, does spray foam stick to metal? Why is Foam it Green closed cell spray foam insulation the right choice for your metal building? Because it bonds to metal, conforms to uneven surfaces, and stops condensation and airflow by forming an air & water-tight seal. Nothing else will form to the metal ribs like spray foam. In respect to this, does spray foam hold moisture? Open cell spray foam insulation will still dry completely after getting wet. In addition, because spray foam is not a “food” for mold, there is little danger of mold becoming a problem even if it gets wet. Closed cell foams also do not absorb water, which is very beneficial in flooding zones.Can you Bondo over rust?Rust. Body filler is not good for rust repairs. You cannot slather some Bondo over rust and expect it to stop the rust or stick to it for that matter. If there are holes in the metal, you are much better off cutting it all out, patching it with new metal, and then working the body filler from there.
