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Old 12-17-2011, 01:06 PM   #1
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Exterior light and outlet installation


Hi there,
The way my builder has installed an exterior light and outlet seems to me wrong because it allows water to penetrate beneath the siding. I would appreciate if someone look over the attached pictures and confirm or deny my concerns. The advice how to correct the problem if it does exist would be great as well.
Thanks.
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Exterior light and outlet installation-ext_light1.jpg   Exterior light and outlet installation-ext_outlet.jpg  

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Old 12-17-2011, 01:32 PM   #2
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Exterior light and outlet installation


I wouldn't be that concerned but if it bothers you just put silicone where ever there's a crack

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Old 12-17-2011, 02:12 PM   #3
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Exterior light and outlet installation


Thanks. I thought about caulking but the gaps are too wide ~1/2" for it.
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Old 12-17-2011, 02:26 PM   #4
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Exterior light and outlet installation


Use foam insulation, wipe it smooth with a putty knife, paint it to the color of your home. Good to go.

Or you can use an exterior plaster or porcelain.

The installation is correct, it's just how your siding is, and the design/shape of the light. DOing the above will work.

Just make sure your exterior electrical recepticle (plug in) is GFCI per NEC 210.8
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Old 12-17-2011, 03:26 PM   #5
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Exterior light and outlet installation


I have no experience in this area, but if it were my house I'd be concerned too. Logically, it seems like water will certainly run down the siding above the fixture, hit the block, and be channeled right down inside the siding to either side. I can't believe this is how it's supposed to work, but if so and the builder won't fix I would definitely foam+caulk it as the others have described.

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Old 12-17-2011, 03:40 PM   #6
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Exterior light and outlet installation


Thank you all! I'll try to foam it.
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Old 12-17-2011, 06:59 PM   #7
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Exterior light and outlet installation


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Thank you all! I'll try to foam it.
THEN put caulk over the foam.

I have not seen any of the expanding foams that are weather rated.
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Old 12-17-2011, 07:15 PM   #8
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Exterior light and outlet installation


Quote:
Originally Posted by gatorheel View Post
I can't believe this is how it's supposed to work,
That IS how it is supposed to work.

That is a typical siding block. The perimeter of that block is the SAME thing as every window, door or other opening's j-channel.

You need not be concerned about this at all.
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Old 12-18-2011, 09:35 AM   #9
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Originally Posted by Speedy Petey View Post
That IS how it is supposed to work.

That is a typical siding block. The perimeter of that block is the SAME thing as every window, door or other opening's j-channel.

You need not be concerned about this at all.
Could you please explain how such way of installation can prevent water from coming behind the siding? There are 1/2" gaps between siding and siding block and no any J-channels.
Thanks.
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Old 12-18-2011, 09:52 AM   #10
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Exterior light and outlet installation


The J channel is built into that box. There is a flange that extends out past the siding cuts. It is shown covered by the black tar paper in the one shot.
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Old 12-18-2011, 10:05 AM   #11
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The J channel is built into that box. There is a flange that extends out past the siding cuts. It is shown covered by the black tar paper in the one shot.
Thanks. So you agree with Speedy Petey that everything is fine and I shouldn't worry about this, right?
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Old 12-18-2011, 10:41 PM   #12
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Exterior light and outlet installation


Yup, what Jim said. The flanges underneath are at least as wide as the outer flanges. Some water can probably get behind there, but this is why there is tar paper or tyvek back there.
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Old 12-19-2011, 04:54 AM   #13
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Exterior light and outlet installation


I would goober it up with duct seal,then silicone.Paint to match.
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Old 12-19-2011, 07:51 AM   #14
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THEN put caulk over the foam.

I have not seen any of the expanding foams that are weather rated.
If you decide to fill the gap, the suggestion above should work fine. When I replaced my patio doors with French doors, there were gaps of 1/2" or so in some places between the trim and stucco wall. I filled the gap with foam, covered it with a layer of paintable caulk and then painted to match the wall color. This has worked fine for at least five years now.

David
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Old 12-19-2011, 08:48 PM   #15
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Exterior light and outlet installation


Thank you all guys!

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