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Water coming out of vinyl siding.
Improper installation is the leading cause of most vinyl siding issues.
Rainwater leaking from a gutter ends up behind siding and causes a wall to rot.
Vinyl is a potentially leaky material and water trapped behind siding leads to decay and mold.
Mix vinegar and water in a large bucket in a 30 to 70 ratio 30 percent vinegar and 70 percent water.
If an installer uses a material such as incorrectly this only exacerbates the problem.
Installation issues heat and water are the most common troublemakers but they aren t the only ones.
Btw the siding is not supposed to be water proof.
Since water runs downward unless it s being driven by strong winds the standard method for.
While the actual face of vinyl siding is waterproof a vinyl sided building wall is by no means waterproof.
If you see the stepflashing drain behind the siding the paint under the butts will keep it from draining out and still if the lap is below the first stepflashing all the water will drain behind.
J channel is a poor design if not flashed well it allows water to get in behind siding.
Your water protection comes from the stuff under the vinyl tar paper or tyvek that sheds any liquid water away from your wallboard and framing.
Vinyl siding used on building exteriors is not nor is it meant to be a waterproof barrier.
The extra thickness of the vinyl.
Look above the stain point for a drip source above the point on the siding where you see this stain perhaps at a window or an insect nest.
Vinyl siding is designed as an exterior cladding only and is supposed to be installed over other materials such as a weather resistant barrier.
Sometimes we also see these drip stains just below the small vent openings cut into the bottom edge of vinyl siding.
This cleaning mixture is used to wash the vinyl siding and eliminate dust dirt mildew.
At some point in the past an owner had vinyl siding installed over old siding.
As with everything in your home the smallest and sometimes the oddest things can cause significant problems when it comes to your siding.