How do I fix water getting into my walkout basement from my patio?

Jerry Hilscher
by Jerry Hilscher
+4
Answered

Hi, water got into my basement from the patio outside my walkout basement of my 40 y/o home. The flashing applied 40 years ago rusted away. Big box store advised flashing and sealant. Unexpected storms hit last night after removing siding and installing flashing, water came in. Did I do something wrong, did I use the wrong flashing (I have been told that the old flashing wasn't 'L' shaped, but can't tell from the old stuff). What do I do now. We have unexpected company coming and will need the basement space, plus I will have to remove moldy dry wall too, so need to fix this correctly.

q how do i fix water getting into my walkout basement from my patio

What I found after removing 4'x8' panel siding.

q how do i fix water getting into my walkout basement from my patio

another before pic

q how do i fix water getting into my walkout basement from my patio

water after storm

q how do i fix water getting into my walkout basement from my patio

my repair with 4" L type flashing and flashing adhesive/caulk

q how do i fix water getting into my walkout basement from my patio

another after pic

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