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Old 07-17-2007, 09:42 PM   #1
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roof to wall flashing.


How do I flash the roof 2 wall transition. I'm rebuilding my portico. The way it was originally built, the first rafter was nailed on the shingles.
Is there a product that makes the roof 2 wall easy or do I need to bend a piece of aluminum and make it work somehow?

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Old 07-17-2007, 10:20 PM   #2
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roof to wall flashing.


You can use the rubber flashing as a shield, but use Step flashing over the top to shed the water down and away. The only thing about the rubber flashing, is that you will have to remove some of the wooden siding to install.

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Old 07-18-2007, 07:03 AM   #3
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roof to wall flashing.


Quote:
Originally Posted by gregzoll View Post
You can use the rubber flashing as a shield, but use Step flashing over the top to shed the water down and away. The only thing about the rubber flashing, is that you will have to remove some of the wooden siding to install.
I'm residing at the same time so all the siding is coming off.

I was going to put ice and water shield over the entire roof and run a few inches up onto the wall and then weave step flashing in with the roof shingles. Where I'm having trouble understanding is the first piece of step flashing. How do I keep the roof from draining behind the siding?

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Old 07-18-2007, 08:05 AM   #4
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roof to wall flashing.


The Rubber flashing will shield it, along with the step. When you do the whole setup, it will go from bottom to top, with the next layer being over the edge of the next.
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Old 07-18-2007, 08:12 AM   #5
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roof to wall flashing.


Quote:
Originally Posted by Clutchcargo View Post
I'm residing at the same time so all the siding is coming off.

I was going to put ice and water shield over the entire roof and run a few inches up onto the wall and then weave step flashing in with the roof shingles. Where I'm having trouble understanding is the first piece of step flashing. How do I keep the roof from draining behind the siding?

TIA
These 2 links may help you:

http://www.housingzone.com/topics/pb.../pb03ga007.asp

(In this video link, it is not required that you dress like the guy in the video wearing the jean cut offs and the bandana ): http://www.hgtvpro.com/hpro/pac_ctnt...&videoid=63326
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Old 07-18-2007, 09:24 AM   #6
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roof to wall flashing.


Ok, the kickout flashing makes sense. Is that a product that's available or is that something that is made on the site from step flashing?
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Old 07-18-2007, 01:35 PM   #7
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roof to wall flashing.


Kick-out is made on site. If you do not have a Brake for sheetmetal, you will have to improvise.
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Old 07-18-2007, 04:14 PM   #8
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roof to wall flashing.


It also can be made from a standard baby tin step flashing.

Take your tin snips and cut on a 45 * angle and bend the bottom portion upwards, so the sheet metal on the top portion overlaps the sheet metal on the bottom portion. Ice and Water shield behind the step flashings is also a good idea, especially since you will have the siding removed.

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Old 07-21-2007, 11:01 PM   #9
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roof to wall flashing.


Can you make a kickout flashing using galvanized L flashing? I wasn't sure if it would rust since it was cut.
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Old 07-21-2007, 11:18 PM   #10
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roof to wall flashing.


You can use Aluminum or Copper, then you do not have to worry about rusting.
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Old 07-22-2007, 03:07 PM   #11
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roof to wall flashing.


If you use a copper step flashing in direct contact with aluminum step flashings, then the aluminum one will disintegrate from a "Galvanic" reaction.

Make sure you use compatible metals in direct contact with each other.

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Old 07-22-2007, 04:36 PM   #12
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roof to wall flashing.


All I have access to is really thin aluminum step flashing. Can I cut a piece of galvanized metal for the kickout? I mean people use galvanized all the time and have to trim it to size.
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Old 07-22-2007, 05:40 PM   #13
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roof to wall flashing.


Galvanized sheet metal is closer to aluminum on the "Galvanic Chart" than aluminum and copper are.

It is still two dis-similar metals and not hight recommended, but they will not have as an intense of a reaction as the copper has to the weaker aluminum metal.

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Old 07-22-2007, 07:53 PM   #14
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roof to wall flashing.


I sounds like you need to use aluminum nails as well; is that correct?
Are there any pictures online on how to bend a kickout into shape?
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Old 07-22-2007, 10:26 PM   #15
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roof to wall flashing.


I cut the 45 degree cut and placed a 2X4 block at the cut. I then just bent the metal around the 2X4 (not all the way). It worked for me.

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