How to fix a large hole in metal siding
Patching gaps in metal siding prevents water from seeping in and rotting the underlying wood. However, beginners to home repair often leave these holes exposed—from small punctures near gutters to two-foot cutouts from electrical upgrades—because they do not know what materials to use for the patch.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Using more matching siding
- 2Patching with random galvanized sheet metal and silicone
- 3Using aluminum trim coil cut to size
- 4Backing the hole with rigid foam board and flashing over it with a metal patch
- 5Using a combination of expanding foam, backer rod, and exterior caulk to seal the gap.
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“My grandparents sent me this picture of a small hole near their gutter. I’m not sure of the material but what would you recommend to use to patch this up? I’m super new to fixing things.”source ↗
“So now there's this big square hole in the metal siding of my house about 1 1/2' x 2'. Would appreciate any suggestions on how I could fix this so water doesn't rot out the wood.”source ↗
Where this came up
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