The caulking mentioned is fine to seals the gape but you may need somethingto back it other thatn backer rod. in that case you may need a small amount of Rockwool insulation to pack into the void befo ... read more
The first thing to reduce energy is to see where it is being wasted.
An energy audit with blower door test and infared camera is the best place to start.
The list of upgrades range from adding insu ... read more