Smart moves for a warmer home
Seal those air leaks
Before adding insulation, seal all air leaks. You can do this step yourself or have an insulation contractor do it.
There are a number of materials for sealing air leaks. The material of choice depends on the leak’s location and size.
Caulk is best for sealing leaks of less than a half inch. It can be used to seal outlets, light fixtures, baseboards and wall openings for plumbing.
Spray foam can help seal larger gaps, such as gaps between baseboards and floors, but shouldn’t be used near heat sources because it is flammable.
Foam gaskets can be used behind outlet covers and switchplates.
Rope caulk is best for sealing doors and windows. It’s sometimes used along with regular caulk.
Weatherstripping also helps seal windows, doors and attic access doors/panels.
Sheet metal plus high-temperature caulk is used to seal flues, vents and chimneys.
Mastic seals gaps in the ducts that carry air throughout your home.