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: 188

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

Chris Heenan replied to Dale Hoffmeyer's discussion Friends and Family Referral Marketing
"I wish this forum had thumbs up buttons."
10 hours ago
Russ Eisenberg replied to Dale Hoffmeyer's discussion Friends and Family Referral Marketing
"I like a 2 prong approach.  Refer someone and the referrer gets $X and the referral gets $x…"
10 hours ago
Brian Toll replied to Dale Hoffmeyer's discussion Friends and Family Referral Marketing
"We get a handful of audit referrals each month by offering a $25 bounty to our customers through…"
11 hours ago
Tom White's video was featured

Hayward Healthy Home Principles and Products

Bill Hayward discusses the principles that were used to build the first Hayward Healthy Home and how the products were evaluated for toxicity before they wer...
11 hours ago
jackie harsha is now a member of Home Energy Pros
11 hours ago
Diane Chojnowski replied to Jan Green's discussion Retrofitting a 1979 Home to NAHB Silver or Gold - Pending Cert
"Jan, please post your slide deck or presentation here. We'd love to see it!"
11 hours ago
Jan Green posted a discussion

Retrofitting a 1979 Home to NAHB Silver or Gold - Pending Cert

I'm excited to be the lone speaker for the last in a series of lectures for the Scottsdale Green…See More
Sunday
Crosbey Archery liked Crosbey Archery's blog post How to improve the air quality in your home ?
Saturday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service