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: 145

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

Home Energy Pros

Home Energy Pros was founded by the developers of Home Energy Saver Pro (sponsored by the U.S. Department of Energy,) and brought to you in partnership with Home Energy magazine.

Latest Activity

Laura Langham posted an event
Thumbnail

Residential Home Energy Efficiency Workshop - Greensboro, NC at Kathleen Clay Edwards Library – 1420 Price Park Drive, Greensboro, N.C. 27410

March 3, 2015 from 6:30pm to 8pm
Free Home Energy Conservation Workshop: Greensboro – 3/5/15Register for the Greensboro workshop…See More
2 hours ago
EnergyLogic Academy posted an event
Thumbnail

RESNET Rater Training Phase II at Denver, CO

May 11, 2015 to May 14, 2015
Join us in Beautiful Denver, CO!The field portion of HERS Rater Training is 4 days of field…See More
2 hours ago
Jim Gunshinan replied to Jim Gunshinan's discussion When your shower is in your kitchen...
"With more and more builders in crowded, expensive-to-rent-in cities like New York creating…"
2 hours ago
Home Energy Magazine's blog post was featured
2 hours ago
Profile IconBilly Ray Griffin and Lee Blanchard joined Home Energy Pros
3 hours ago
Home Energy Magazine posted a discussion
3 hours ago
Sean Lintow Sr replied to Jim Gunshinan's discussion When your shower is in your kitchen...
"Cool, I can start cooking dinner, hop in and take a shower while making sure that…"
4 hours ago
Jim Gunshinan posted a discussion

When your shower is in your kitchen...

Interesting question by Leanne Maxwell, former colleague at Home Energy:"Aside from all of the…See More
5 hours ago

© 2015   Created by Lawrence Berkeley National Laboratory.

Badges  |  Report an Issue  |  Terms of Service