The Fascia System is designed to accommodate the large amount of expansion and contraction that can occur with many deck fascia boards. The pre-drilling tool creates an over-sized hole for the Fascia Screw, so that the fascia board hangs from the screw and can expand and contract without putting a large amount of force on the fastener.
Fascia Screws feature star drive recesses and are ACQ approved. Follow the decking manufacturer's recommendation when selecting either stainless or epoxy coated fascia screws. In general, for applications where either corrosion or especially large amounts of expansion and contraction of the fascia material is a concern, use stainless Fascia Screws.
The Fascia System has been evaluated and approved for use by major decking manufacturers. See decking manufacturer's installation guides for changes to application instructions - with the improved performance of the Fascia System (compared to standard deck screws used to install fascia), fewer fasteners may be required.