You can insulate switches and outlets primarily by adding special foam gaskets or inserts behind the cover plates to block air leaks and drafts, as demonstrated in the provided video reference.
Insulating electrical switches and outlets is a simple yet effective way to prevent air from leaking through the small gaps around these fixtures in exterior walls. These seemingly small gaps can contribute significantly to energy loss and drafts, making your home less comfortable and increasing heating and cooling costs.
Why Insulate Switches and Outlets?
Even though switches and outlets are sealed within the wall, there are often small gaps between the electrical box and the drywall, as well as air paths through the box itself and around the wiring. The cover plate alone doesn't provide an airtight seal. Insulating these areas helps to:
- Reduce Drafts: Stop cold air in the winter and warm, humid air in the summer from entering your home through these openings.
- Improve Energy Efficiency: By preventing conditioned air from escaping and outside air from entering, you reduce the workload on your heating and cooling systems.
- Increase Comfort: Eliminate uncomfortable drafts, making rooms feel warmer in the winter and cooler in the summer.
The Simple Method Using Foam Inserts
The method shown in the video is one of the easiest ways to insulate outlets and switches. It involves using pre-cut foam gaskets designed specifically for this purpose.
Here's how it generally works, based on the video:
- Obtain Foam Gaskets: Purchase foam insulation inserts that match the shape of your switch or outlet covers. These are readily available at hardware stores.
- Remove the Cover Plate: Carefully unscrew and remove the existing plastic cover plate from the switch or outlet. Always ensure the power to the circuit is turned off at the breaker before doing this.
- Place the Foam: Take the appropriate foam gasket and place it onto the back of the outlet or switch cover plate. The video specifically shows placing the foam into the back of the outlet cover.
- Reattach the Cover: Carefully align the cover plate (with the foam gasket now sandwiched behind it) over the switch or outlet box and screw it back into place. Tighten screws just enough to hold the plate securely without cracking it.
As highlighted in the video clip, after placing the foam in the back of the cover and putting it back onto the outlet, you get "no more drafts".
This method creates a seal between the cover plate and the wall surface, blocking many of the air leaks.
Other Insulation Methods
While foam gaskets are the quickest and simplest solution, especially for existing homes, other methods can be used during construction or major renovations:
- Air Sealing the Electrical Box: Before drywall is installed, use caulk or spray foam designed for electrical applications to seal the gaps between the electrical box and the framing.
- Box Inserts: Some specialized electrical boxes are designed to be more airtight, or you can install airtight inserts inside standard boxes before wiring.
For most homeowners looking to improve existing insulation, the foam gasket method is the recommended first step due to its ease and low cost.
Remember to always prioritize safety when working with electrical components. Turn off the power at the circuit breaker before removing any switch or outlet cover plates.
