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Old 09-03-2009, 04:03 PM   #1
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Sealing exterior porch light


Hi,

I just installed an exterior porch light. The base of the new light doesn't quite cover the original opening fully, so the junction box is slightly exposed. I'd like to seal this obviously to prevent cold, water, bugs etc from getting in. What would be the best/safest approach here? Thanks

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Old 09-03-2009, 04:14 PM   #2
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Sealing exterior porch light


I presume that the sides of the junction box is what you're seeing, right? If you can see into the box then there's a larger problem for sure.

The big question...What sort of siding or masonry do you have on the outside of the house? A picture would sure help illustrate the problem.

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Old 09-03-2009, 04:33 PM   #3
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Thanks thekctermite. This should help illuminate...

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Old 09-03-2009, 05:08 PM   #4
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Sealing exterior porch light


Brown latex caulk, properly/cleanly applied, will do the job.

Any color will seal it but the brown will look better.
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Old 09-03-2009, 05:35 PM   #5
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You can also use caulk that actually looks like mortar, to match the mortar around the brick. I recently bought some at Home Depot...Quickrete makes it...It is an interior/exterior product that stays fairly flexible. They sell it near the concrete patch, crack sealer and concrete trowels and such. Lots easier than actual mortar!

http://www.quikrete.com/ProductLines/MortarRepair.asp
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Old 09-03-2009, 07:09 PM   #6
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Thanks for the help! Just what I needed to know.
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Old 09-03-2009, 07:13 PM   #7
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Sealing exterior porch light


Don't plug up the little hole in the bottom of the fixture. It is a weep hole in case water or moisture does get in.
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Old 09-04-2009, 08:37 AM   #8
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Sealing exterior porch light


I'll be sticking to the lower left/right. Now I just have to see whether Home depot in Canada sells that Quikrete stuff. There's no sign of it on their .ca website. Brown latex caulk otherwise. Thanks again.

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