Introduction
Water leakage is one of the most common problems in roofing systems. In many cases, the issue is not the sheet itself, but the fastening system.
Common Causes of Leakage
- Poor Quality Washer
Low-quality washers or rubber materials can crack, harden, or deform over time.
Result: Loss of sealing → Water leakage
- Incorrect Installation
Over-tightening or under-tightening screws can damage the washer or fail to compress it properly.
Result: Gaps between screw and sheet
- Using the Wrong Type of Screw
Using stitching screws or general screws instead of roofing screws with bonded washers.
Result: No proper sealing
- Metal Shavings (Swarf) Damage
During installation, metal debris may remain under the washer.
Result: Washer damage → Water ingress
Solutions
- Use self-drilling screws with EPDM bonded washers
- Ensure proper torque during installation
- Choose screws with scratshank / clean drilling design
- Use products designed specifically for roofing applications
Recommended Solution
Strong-Point roofing fasteners are designed with:
- EPDM bonded washers for sealing
- Reliable drilling performance
- Consistent quality for long-term use
Conclusion
Choosing the right fastener is critical to preventing roof leakage. A small component like a screw can determine the overall performance of the roofing system.