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Old 06-18-2008, 03:27 PM   #1
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sealing a masonry hole for a wire


Hi All.

I basically have a large antenna for my house and when we moved in the wire only went to one side of the house (bedroom TV). I wanted to split this and have it go to the living room TV as well. So, I split the signal with a standard splitter and drilled a hole into the masonry in the basement and got the cable wire through. The problem is that the hole is a bit wider than the wire and I could see critters and of course cold air coming in in the winter time.

I'm not a 'cable guy', but what is the right caulking to apply on the outside, and also, should I use the expanding foam to spray inside where the cable runs through the drilled hole? I don't expect to move this ever, so I don't mind if it's mumified. But I do want to keep my basement/home free of cold and critters.

Thanks!

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Old 06-18-2008, 03:51 PM   #2
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sealing a masonry hole for a wire


As long as this hole is not below grade, a good quality latex or silicone exterior painters caulk will do the job. Something that is paintable and remains flexible would be a good idea.

Squirting foam inside the annulus of the hole wouldn't hurt either. Just remember that the foam will expand like crazy as it dries.

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Old 06-18-2008, 09:18 PM   #3
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sealing a masonry hole for a wire


Silicone colored the same as the morter would be the best way to go. They actually make a pass through tube for walls where Coax goes throug, so that you do not have to seal the opening.
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