Question On Flashing For A Roof Line

72chevy4x4

I have a question for you roofer pro's. when you have a 1st story roof running up along a two story wall, do you always use step flashing or do you ever use a solid piece of flashing maybe 12" wide x 12" wide bent to a right angle.

sorry if it's a silly question-I'm doing a siding job and there a lot of water damage at the roofline, so I'm cutting out the osb and replacing. Was wondering if the flashing extended more than 4-5" above the shingles if it would have helped. This is an 80's house-no wrap and it was stucco...different flashing probably wouldn't have helped.

neolitic

I have replaced lots of different
schemes of roll/coil flashing
that didn't work, with
step flashing that does work.

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(Sorry....it seems there really are dumb questions)

Bill

Step flashing
4" up and 5" under shingle
slightly up above the tar strip so the shingle can seal to the next one without the flashing interfering
The ONLY way to make a single flashing work is to bend a "Hook" where the flashing lies under the shingle so the water can not get past it. Never tried it, but think it may work. Done it many times for valley flashing

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reveivl

Always use step. What's to stop wind driven rain from getting under a continuous flashing?

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genecarp

Step

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Patrick

In extreme cases we will do ice and water, L bend, and then step flashing.

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Originally Posted by Celtic
Like I said...I'm sure you are very good at what you do ~ whatever that is and where ever it happens.

Wrathchild5150

Step flashing is the best way to do it, hands down. If you're really in a bind you might try running a strip of cement down the solid piece of flashing before laying the shingles into it, but I have my doubts about that method's effectiveness or longevity. If you're at the point of replacing it, why don't you just go ahead and do it the right, time tested and true way, and step it? Happy customers are repeat customers!

genecarp

conditions that extreme, i would be having my metal fabricator making up a nice piece of copper.

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J-Peffer

I lay my step flashing out flush with the bottom of the shingle. Leaves none exposed but keeps the water on top of the shingles.

1 nail in the flashing, and the next piece covers the nail, like a shingle. Shingles are not nailed though the step flashing then.

For new construction roofs, I put I&W 12" up the wall, 12" on the roof line as well.