| 摘要 |
A roofing and siding fastener for securing underlayments, exterior insulation sheathings, and similar membranes to a substrate. The disclosure comprises a cap portion having a rectangular body with oppositely extended legs. Said legs are bent downward and have heels situated at the ends. The cap has a nail centrally inserted through the body. The installer positions the fastener over the material to be secured and strikes the nail head, thereby driving the fastener into a substrate. As the cap portion engages the material, the heels act to deflect the flattening legs over the top surface of the material instead of allowing the legs to puncture. Each flattened leg now becomes a spring-like binder which not only provides superior holding power over the prior art, they also flex upward to dampen strong winds which can blow these underlayments off. This flexibility greatly enhances the effectiveness of underlayments in a "dry-in" procedure. The disclosure also greatly enhances the safety of walking on pitched roof underlayments. The holding power of the disclosure reduces installation time by 50 percent.
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