How to Drill & Use Fasteners in Metal
Metal siding attaches to a structure with either wooden or metal studs underneath for the framework. Self-tapping sheet metal screws drive into the metal without you having to drill a pilot hole, change to a screwdriver bit, install the screw and then apply silicone caulk for a waterproof seal. Self-tapping bits save more than 50 percent of the labor time on projects.
Instructions
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Hold the drill in one hand and place the chuck key on the chuck with the other hand.
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Turn the chuck key counterclockwise to loosen. The jaws of the drill chuck will open and release the existing drill bit or screwdriver bit.
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Pull the existing bit straight out and set it aside.
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Insert a sheet metal screwdriver bit into the chuck jaws.
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Turn the chuck key clockwise to tighten the bit in the drill.
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Push the sheet metal against the wooden or metal stud. Hold the metal in place firmly with one hand.
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Place a self-tapping screw on the metal, place the drill on top of the screw and pull the drill trigger. Start the screw by pulsing the trigger slightly until it penetrates the metal. Depress the trigger and hold it to drive the self-tapping screw into the metal and studs or framework.
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Continue drilling sheet metal screws about 2 feet apart until the metal is entirely fastened on a project.
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Tips & Warnings
Self-tapping metal screws have a rubber washer underneath the head to form a waterproof seal around each screw. This eliminates the need for silicone caulk around each screw to seal the hole from rain.
Do not drive self-tapping screws deep enough into metal to break the washer. If the washer is visibly broken, place the drill in reverse, remove the screw and replace it with another screw.
Water leaking into holes will rust the screws, and let water inside of a structure. This will damage the wooden framework, insulation and interior walls and cause mold and mildew accumulation.
References
- Photo Credit industrial siding image by Steve Johnson from Fotolia.com
