For metal roofing and wall panel installations that demand watertight performance, JLHY's self drilling screws with factory-bonded EPDM washers deliver. The EPDM rubber washer is permanently bonded to the screw's integrated washer under heat and pressure, creating a compression seal that prevents water from penetrating the fastener hole even under wind-driven rain and temperature cycling. The bonded design eliminates the risk of washer loss during installation or maintenance that can occur with loose rubber washers.

EPDM (ethylene propylene diene monomer) rubber maintains its sealing properties across a broad temperature range from -40°C to +120°C and resists degradation from ozone, UV exposure, and oxidation. This makes it ideal for long-term outdoor roofing and cladding applications where other rubber compounds would crack and fail within seasons.

JLHY sources premium EPDM compounds that pass rigorous aging and compression set tests to ensure the washer maintains its seal throughout the roof's service life. The self drilling point penetrates metal roofing panels quickly without predrilling, and the fine thread provides strong pull-out resistance in both steel and aluminium structural substrates.

These roofing screws are available in a range of lengths to accommodate different panel and insulation thicknesses. We offer matching color-coded caps for a finished appearance that blends with your roofing panels. Available in zinc plated and dacromet coatings for extended service life in coastal environments.

Contact our roofing specialist team for specifications, pricing, and technical guidance on the correct length and coating for your specific roofing system.