Closed Cell Foam Manufacturer | EVA, PE, EPDM Solutions

When the specification requires waterproof closed cell foam, our EVA and PE formulations deliver less than 0.1% water absorption over 24-hour submersion, validated by ASTM D1056 testing. This characteristic is essential for pool exercise equipment, boat decking underlayment, outdoor signage, and below-grade construction membranes. We engineer the foam with uniform cell walls that resist hydrolytic degradation, even in high-humidity or saltwater conditions, without the need for additional coating or lamination. Our production process allows us to incorporate UV stabilizers and anti-fungal agents directly into the polymer matrix, ensuring long-term performance in tropical or marine climates. Additionally, we can supply this foam in high-compression grades for gasketing in water treatment valves or as flotation cores for subsea devices. With custom thicknesses up to 100mm and widths up to 2.2m, our waterproof closed cell foam reduces design complexity for engineers needing reliable moisture barriers that also offer cushioning or thermal break properties.