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Old 10-25-2010, 10:15 AM   #1
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flashing against a wall

Hi all,

I just bought an old greek revival fixer-upper, and one of my first projects it to fix a roof leak. The spot is where a wall (horizontal wood siding) and a porch roof (asphalt shingles) meet. The previous owner just slapped a piece of flashing right on top of everything, which of course doesn't work at all.

Can anyone suggest a thread, tutorial, or book that will show me the best way?


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Old 10-25-2010, 02:57 PM   #2
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flashing against a wall

the short answer is:

You need to fabricate and install a flashing detail that is either under - or- into the wall surface & in shingle fashion onto the roof surface.

If the siding is vinyl or aluminum you can remove the bottom few courses and get under the siding... If it is Brick or masonry, you will need to grind a reglet joint.

If the wall is rising wall, like the side of a dormer, you will need to install step flashings. If it is a horizontal run, you should install a counter flashing.

I didn't have much time to find a detailed drawing or sketch but >>>


Towards the bottom of the page should give you a good idea.

Hope this helps!


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