EVA material waterproof: what it really means for closed-cell foam, marine deck, orthotics, and car mats

Let’s talk plain. EVA is water-resistant, not magic. In dense sheet or closed-cell foam, it shrugs off splash, rain, and short soaks. But “waterproof” depends on structure (closed vs open), thickness, crosslinking, seams, and how you build the part. If…