What a protective cover keeps in may be more destructive than what it keeps out.

Understandably, most people think first about what a cover keeps out, but what’s arguably even more important is what it lets out.

If a cover isn’t highly air-permeable, it traps moisture. That’s because the water vapor has nowhere to go - so even when the outside humidity drops, it’s stays humid under the cover. 

Worse, when the temperature goes down, the air can’t hold as much water vapor - which leads to condensation (that’s why there’s dew in the morning and evening, but not at midday). The condensation drops onto what you’re covering and leaves a layer of water (like a cold glass in summertime).

The result is a cover that accelerates rather than mitigates corrosion. 

That’s why you want to make sure your protectives covers are both waterproof AND highly air-permeable. Note the emphasis on air-permeability. There’s a big difference between being “breathable” and being highly air-permeable. The question to ask is how many cubic feet of water vapor goes through the cover per-minute (cfm). Many covers claim to be “breathable,” but that’s an entirely different standard - one in which the cover is only “breathable” once it’s created the very conditions you’re trying to prevent. 

It’s very difficult to create a cover that is waterproof, highly air-permeable, lightweight, and durable - which is why Cocoon’s cover is patented. In many ways it’s technology in the form of a textile because it can let out corrosive elements as well as it keeps out corrosive elements.

To get more information on how protective covers work, and what features to look for, please download our introductory brief. You can also give us a call or send us an email.