Fixing metal siding that is loose on garage

metalrepairsiding

The metal siding on my garage (built in 2012) is coming off, leaving exposed wood.

The only thing that was holding the metal down was the caulk which came off pretty easily within a few years.

I don't think re-caulking as-is would be enough as it won't hold so I was thinking of buying screws like these to hold the siding in place and then re-caulking. Thoughts?

Thanks for the help!

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EDIT Oct 4th: I starting cleaning it up to re-caulk and found this in the top right corner:

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Here is the likely cause (this view is from above the top right corner):

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So I have two additional questions:

1) What should I do about the rotting wood/fungus?

2) What should I do to fix source of problem? It looks like I can caulk the cracks easily.

Best Answer

yes. screw it back into place. Use truss-head type screws rated for exterior use. Truss screws have a round very flat head. Drill pilot holes to fasten to frame beneath. Start your repair in the center of the loosened panel; working outwards in each direction. This will decrease the chance of the panel becoming distorted. Apply 100% silicone along underside of panel to improve adhesion and waterproofing. I'd use as few screws as possible so as to not twist or wrinkle the metal siding. If you use urethane caulking it will not only stop water penetration it will adhere to the metal and framing much like a construction adhesive would. 2 for 1 as it were.

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