Is water draining from under siding normal after heavy rain?
Water coming out from under siding after a heavy downpour leaves homeowners unsure if weather-sealing is working or if moisture is trapped inside the walls. This uncertainty makes it difficult to know whether the drainage is a normal runoff pattern or a hidden defect requiring immediate intervention.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1checking downspout direction
- 2inspecting for actual presence of water behind siding
- 3Adding a bent piece of flashing to direct water into the trough
- 4Opening up the wall to check for leaks
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Is this potentially letting water in? Or are there some other structures typically under this that would prevent water from getting into the wall?”source ↗
“We did just get a ton of rain, but I noticed that there are certain spots around our home where it appears that water might be coming out from under the siding… I can really see up there or reach up there to see what’s going on. I guess there is weather sealing up in there as well. I just want to know, is this is something that should flag?”source ↗
Where this came up
People with this problem also raised
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- 6Why is rainwater missing my gutters?
- 2Why is water streaming down my driveway after heavy rain?
- 5How to stop roof water from overflowing and rotting the window sill