Stopping Air Infiltration at Cable / Phone Line Entry

This is an entry point for cable TV coax, phone lines and a couple of grounds. They exit the basement of this home through a hole drilled in the foundation.

The air infiltration at this opening is significant. There is effectively a open path to the outside between every cable. If you flex the cables a bit you can see sunlight.

 

I'm struggling with how to stop the airflow. My first thought was expanding foam but that could be a mess and not guarantee that the leaks would be filled.

 

I searched the web but mainly came up with industrial products for outdoor utility boxees.

Any suggestions?

 

Thanks for your help,

 

Johnny

 

Johnny on Energy - Helping you improve your home energy efficiency.

Views: 184

Reply to This

Replies to This Discussion

Gosh, that's a lot of wires.  If there weren't quite so many, I'd suggest making a foam gasket so that each wire passed through its own hole.

 

How about if you attached a zip tie to the bundle of wires on one side of the wall to immobilize them, and then on the opposite side peeled the wires apart one at a time and injected caulk between them, then bundled them back together (squishing the caulk) and zip tied that end?  That would seal all the gaps between wires, leaving you with only the outside of the bundle to seal.  Of course, getting any wires in or out after that would be nearly impossible.

 

Looking forward to hearing other people's suggestions.

With access like that, I'd try pushing into gaps appropriate lengths of wooden dowel of various diameters, to function like shims and fill those gaps.  Clean and reversible.  If it doesn't work, pull them out and try another's suggestion.

RSS

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Dan Antonioli replied to Dan Antonioli's discussion Net Zero Energy Hot Water
"Daniel,  Several years ago I was researching two different systems, one of which I almost…"
1 hour ago
Dan Antonioli replied to Dan Antonioli's discussion Net Zero Energy Hot Water
"Rich, it always depends on site conditions, but generally speaking the 80% figure is a common…"
1 hour ago
Rick Causo posted a video

Swing Green GFX Drain Water Heat Recovery - GreenFoX

PowerHouseTV aired Sept 5 & 6, 2015. Segment 2 of the show highlights Swing Green, Inc. and the 4th generation of Drain Water Heat Recovery system, the Green...
6 hours ago
Matt Thornberry replied to Kim Tanner's discussion Game of Homes
"Thanks Kim! Game of Homes is an exciting new way to earn professional development credits for BPI…"
8 hours ago
Tom White posted a video

Enhabit: the non-profit that helps homes work better

Hear from homeowners Sonia, Amy, Roberta and Ty of Portland, Oregon, and Andy of Beaverton, Oregon, about their experiences with Enhabit. Enhabit is a non-pr...
8 hours ago
Daniel Beauchemin replied to Dan Antonioli's discussion Net Zero Energy Hot Water
"Dan Antonioli, You can use a ThermoDrain, drain water heat recovery to preheat your water and…"
9 hours ago
Steve Leombruno replied to Tim Kendzia's discussion Cooling effect from solar panels
"I have been told t"
9 hours ago
Rich Manning replied to Diane Chojnowski's discussion Poll: Where do you go for information on home performance?
"My favorite is Building Science Corp. Its not only comprehensive, its free!"
9 hours ago

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service