Epdm Rubber Sheet For Basement Underground Waterproofing EPDM Rubber Waterproofing Membrane Product Advantages Excellent weathering and aging resistance, UV‑resistance and ozone‑resistance. Suitable for direct exposed application, long service life outdoor, resistant to pulverization and cracking. High elasticity and high elongation, high tensile strength. Accommodates substrate expansion, contraction, settlement and micro‑cracks with good crack‑bridging performance.