Quote:
Originally Posted by Mass_nerder
Vinyl cladding isn't a face-sealed system, so it has a drainage plane behind the siding to move moisture away from the building paper behind. A little water like in the picture shouldn't be a problem.
If you're noticing a lot more water draining down, they might have installed the siding incorrectly though, and it should be fixed.
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What would constitute "a lot more water draining down"? During the heaviest rain this year, there were similar marks along the length. All the times I have seen it, the wet spots on the stucco aren't flowing, just wet.