Make sure they are firmly connected.
Gap between light switch and wall.
Look for some oversized cover plates.
Twist the white wire from the light fixture to the white wire coming from the wall using a clockwise motion.
This can happen when you remove wall paneling tile wainscot or batten.
If the gap between the electrical box and the drywall is less than 1 4 in fill it with acrylic latex caulk.
Plastic shims are a fast easy solution for backsplash electrical outlets in which the wall box is recessed below tiling quartz granite paneling etc.
In situations where drywall workmanship is sloppier creating a large gap between the electrical box and the drywall or in cases where removal of an old cover plate leaves an old paint line then use of the preferred or even the oversized cover plates work well.
Twist your wire cap on to secure the two wires.
Deep plates feature a deeper edge bevel to reach back farther around your electrical box s edges.
When you add a switch or outlet cover there s a gap between the cover the wall.
Twist the ground wire coming from your light fixture to the ground wire coming from the wall using a clockwise motion.
If you have a switch or receptacle that sits below the surface of the wall just twist apart or fold up and stack these caterpillar spacers to get fine adjustment of your devices light switches receptacles dimmers or any other electrical control.
I think they invented them just for situations like this.
Typically the standard size is used for new construction where construction tolerances are tighter.
Your area looka a bit rough so the contact paper might have a tough time laying flat.
The minimally expanding foam won t drip down your walls.