<human>:  How do you properly insulate a wall?
<bot>: The first step to properly insulate a wall is to determine the type of insulation you will use. Depending on the type of insulation, you can then choose the most suitable method for installing it. Generally, you will either install the insulation between the studs, adding additional studs if necessary, or add it to the outside of the wall. Additionally, you will need to fill any gaps and seal and airtight seal with caulk to prevent air and moisture from passing through the walls.