Seal your electrical outlets to improve your home comfort

Seal your electrical outlets to improve your home comfort

In every house I visit to do an energy audit, the electrical outlets have been a major source of air infiltration. Sealing these holes up in your thermal envelope will reduce your energy usage and make your home more comfortable. 

electrical outlets

Yes, I realize these are small areas with small gaps. However, there is very little if any insulation behind the box in the wall. There is almost never any air sealing around the box. 

electrical outlets

The easiest first step is to add child protection covers to the outlets. This stops some of the air moving through the outlet.

electrical outlets

The next step is to add insulation strips behind the outlet cover. While they are thin and offer very little R-Value – they are better than nothing.

electrical outlets

The final step, seal the box tight to the drywall. 

electrical outlets

All of these steps should be done in order to maximize the effectiveness of the solution. Sealing and insulating all the outlets in both interior and exterior walls is a critical first step in making your home more energy-efficient.

3 Comments Add yours

  1. Kay Smith says:

    Is this done on all your new homes? If I would ask Deborah, she would just say “ask Charles”. So that’s what I’m doing. Thanks and Merry Christmas to you and yours. Sent from my iPad


    Liked by 1 person

  2. The walls of our new homes are air tight so the electrical outlets do not leak. If you are able to address air tightness on the whole house this solution is not as important.


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