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: 173

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

Photos

Loading…
  • Add Photos
  • View All

Latest Activity

Profile IconJeremy Hess and Brian Coverstone joined Home Energy Pros
24 minutes ago
Eric Johnson posted a blog post

Reducing Energy Cost for Kayak

Fishing kayak becomes popular and one of the most attractive outdoor sport nowadays. There are many…See More
4 hours ago
Profile IconCharlie Ouellette, Karin Haerter and Juan joined Home Energy Pros
yesterday
Juan added a discussion to the group Energy Auditing Equipment for Sale, Trade or to Purchase
Thumbnail

Need Energy conservatory Blower door 3 + DG-700

Hello thanks for taking the time to read this post. I am currently looking for a blower door…See More
yesterday
Juan joined allen p tanner's group
Thumbnail

Energy Auditing Equipment for Sale, Trade or to Purchase

Discuss the pros and cons of the equipment you are interested in prior to purchase. Post equipment…See More
yesterday
Caoimhin P Connell replied to Rodney Fox's discussion Radon: Truth vs. Myth
"Good morning, Mr. Cullen – As I mentioned in another post – for the purposes under…"
yesterday
tedkidd replied to Rodney Fox's discussion Radon: Truth vs. Myth
"If putting the house under positive pressure using fresh air helps mitigate not just radon, but…"
yesterday
Rich Manning replied to Rodney Fox's discussion Radon: Truth vs. Myth
"Tell them the truth as you know it, and back it up with the facts!!"
yesterday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service