Plastisol = diffusion-tight?

[Flygsteward]

Our color supplier firmly states that sheet metal is a diffusion-tight material, i.e., not vapor permeable. If the sheet metal is then coated with plastisol, it should almost be "even more diffusion-tight" - you know what I mean

Anyone who wants to contradict this statement!?

 

[Immobil]

Anyone want to contradict this statement!?

No! I agree with your supplier.

 

[pappskallen]

Close-close ;D ;D ;D

 

[charta77]

So, you shouldn't paint metal roofs (or facades) because you'll end up with double waterproof layers

 

[LB]

Double moisture barriers should be avoided when there is something that can rot or mold in between. If you only intend to paint on the plastic-coated sheet metal, I see no obstacles to that, as long as it's a paint that the manufacturer can recommend - otherwise, there is a risk of peeling.