How do you sael screw holes in Aluminum siding? We recently bought a home which had a faded house number sign on the front. The screw holes from the previous sign don't line up with the new sign I have put in its place. The holes are also visible. Would a clear silicone be okay to use or is there a better solution?:)

Clear silicone should work provided that you smooth out the application of it. Maybe paint over the holes that you have applied the silicone with a similar color to the siding?

You might try this stuff: GE 10.1 oz. Gray Silicone II Aluminum & Metal Sealant

It comes in a cartridge that fits a caulking gun and is made specifically for applications like yours.

You can find it at Lowe's or Home Depot.