EPDM self-tapping screws with sealing washers are custom-designed for metal roofing waterproofing systems, achieving fastening and sealing in one step.

Have you ever been troubled by these two core problems in the construction of metal roofing and wall systems?

Fastener leakage: Traditional screws and gaskets are separate; improper installation or material aging can easily turn screw holes into leak points.

Low construction efficiency: Screws need to be installed first, followed by additional sealing treatment, a cumbersome process that is costly and inconsistent in quality.

Leaks not only affect building usability but also corrode steel structures, leading to significant maintenance costs and safety hazards. Now, an innovative solution has emerged.

I. Product Innovation: What are EPDM self-tapping screws with sealing washers?

This is not simply a combination of screws and washers, but an integrated system solution.

Core Components: It perfectly combines a high-performance self-tapping screw with a one-piece molded EPDM sealing washer.

Material Advantages: EPDM (Ethylene Propylene Diene Monomer) is hailed as the "King of Sealing Materials," possessing superior weather resistance, UV resistance, and elasticity. It remains flexible even in extreme environments ranging from -40℃ to 130℃, and its lifespan far exceeds that of ordinary rubber.

Working Principle: The moment the screw is tightened, the washer is uniformly compressed, tightly adhering to the metal plate surface, forming a permanent elastic sealing ring that completely seals the mounting hole.

II. Core Value: Why Does It Redefine Metal Roofing Waterproofing?

Choosing EPDM sealing washers and self-tapping screws brings you three core values:

1. Leak-proof Superior Sealing: The integrated design fundamentally eliminates installation gaps that may exist in separate components. The EPDM washer generates continuous rebound force after compression, compensating for minor vibrations and thermal expansion and contraction of the sheet material, achieving a dynamic seal and ensuring long-term waterproofing.

2. One-Step Construction Efficiency: Combining the tightening and sealing processes significantly simplifies the construction process. Single-person, single-machine operation significantly improves installation efficiency, saving at least 30% of labor and time costs.

3. Long-lasting and reliable all-weather protection: EPDM material resists acid rain, salt spray, ozone, and UV radiation, with a lifespan comparable to that of building metal roofs. It provides decades of maintenance-free waterproofing for large buildings such as industrial plants, logistics warehouses, and stadiums.

III. Nanning Aozhan's Customized Solutions: Safeguarding Your Project

At Nanning Aozhan, we understand the unique requirements of different projects regarding screw specifications, materials, and performance. We offer not only standard products but also deeply customized solutions:

Flexible Customization: We can provide screws of different specifications (e.g., diameter, length) and EPDM washers of different hardnesses according to your sheet thickness, substrate type, and color requirements.

Material Guarantee: The screw body can be made of high-quality carbon steel or stainless steel, combined with advanced surface treatments such as phosphating and Dacromet coating, ensuring excellent corrosion resistance and drilling/tapping capabilities.

Technical Support: Our professional team provides comprehensive technical support, from selection advice to construction guidance, ensuring every screw performs at its best.

Nanning Aozhan is your trusted partner in building fastening and sealing. We are committed to building the first line of defense for your buildings with innovative products.

If your project is seeking a more reliable and efficient metal roof waterproofing and fastening solution, please contact us immediately so we can provide you with a customized, integrated fastening and sealing solution.