The integrated EPDM washer forms a tight seal around the screw penetration, preventing water from seeping under roofing panels. EPDM rubber is highly resistant to UV rays, ozone, moisture, and extreme temperatures. This long-lasting waterproof protection prevents leaks, mold growth, and structural damage, making these screws ideal for both residential and commercial applications. Screws exposed to outdoor elements are susceptible to rust and deterioration over time.
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