Quick fix for leaky gutters that saved me a headache

Nice temporary fix. How long did you let the cleaned seam dry before applying the tape, and did you use a primer to help it adhere? Even a small amount of moisture or oxidation can shorten the bond, especially on older galvanized gutters. For a longer-lasting repair, the seam should be clean, completely dry, and free of loose sealant before taping.

The moisture point is key, especially with older galvanized gutters. I’d also treat the foil tape as a short-term patch because gutter movement can loosen it after hot and cold temperature swings.

A practical check is:

- Inspect the patch after the next major temperature change, not just after rain.
- Press around the edges to check for lifting or new gaps.
- When the weather is dry, remove any loose tape or old sealant, clean the seam, and apply a gutter-rated sealant.

The tape can buy time, but it may not accommodate repeated expansion and contraction as well as a properly sealed seam.

Since the tape has held through a week of rain, I’d also check the drainage before assuming the seam was the only problem. A gutter that’s lost its slope, or a downspout partly blocked with leaves, can still overflow and make a good patch look like it failed. Run a hose from the far end and watch whether water flows steadily into the downspout without pooling. If it backs up, clear that first and check that the gutter falls slightly toward the outlet.