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Old 12-25-2011, 01:11 PM   #1
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Exterior light and outlet installation


Hi there,

I've put this post to the "Electrical" session and got some polar opposite answers. Electricians say that everything is installed right and I shouldn't be concerned, other guys share my worries and say that it has to be fixed. So I would like to hear an opinion of someone who does siding installations.

"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 12-25-2011, 01:28 PM   #2
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Exterior light and outlet installation


There has to be at least 3/8 gap all around the siding block for the siding to be able to expand and contract. If not it will buckle up, that's why the nailing slots have oval shaped holes. The top one from the picture looks a little big. There always moisture getting in behind siding just from condinsation. It just slides down the Tyvek and out the bottom.
Look at the bottom of the laps on the siding, there's going to be tiny holes there to let water out.

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Old 12-25-2011, 02:12 PM   #3
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Exterior light and outlet installation


Just foam and caulk it, or plaster it.

The longer you leave that exposed, the more likely water is going to get into it.

Electricians don't do siding. It's not their job. That said, just fill it in with foam, cut it blend, caulk it, and paint it, and you're fine.
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Old 12-25-2011, 03:31 PM   #4
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Exterior light and outlet installation


Very very bad idea to try and use any form of foam, it's going to do nothing but make a big mess and stick out like a sore thumb. And the caulking would do one of three things, form a dam for water to build up, crack when the siding moves, and if the siding can not move it buckels.
All siding blocks are done the way yours is.
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Old 12-25-2011, 08:03 PM   #5
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Exterior light and outlet installation


Quote:
Originally Posted by joecaption View Post
Very very bad idea to try and use any form of foam, it's going to do nothing but make a big mess and stick out like a sore thumb. And the caulking would do one of three things, form a dam for water to build up, crack when the siding moves, and if the siding can not move it buckels.
All siding blocks are done the way yours is.
That's why when you place the foam in, you cut it to make it smooth with the surface. The caulked seals in the foam pours, you can then paint over the caulking/foam. FOam will also keep the water out as well as the caulking, or he could just use plaster and smooth it in.

No mess at all if you know what you're doing.
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Old 12-25-2011, 08:59 PM   #6
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Exterior light and outlet installation


Barmaley, take a walk down the street and look at some of the houses in your neighborhood, you'll see all of them are done the same exact way and no foam, caulking, or plaster of all things on any of them.
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Old 12-25-2011, 09:17 PM   #7
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Exterior light and outlet installation


http://www.certainteed.com/learning-...iding/?qid=217
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Old 12-25-2011, 09:28 PM   #8
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Exterior light and outlet installation


http://www.hammerzone.com/archives/e...outlet_box.htm

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