Unless your home was specially constructed for energy efficiency you can probably reduce your energy bills by adding more insulation.
Adding insulation to walls in existing homes.
Fiberglass is a great way to insulate an existing wall.
Blow either loose fill cellulose or spray foam into walls from the outside with.
With a small hole and a pump you can insulate your existing walls with minimum fuss.
Many older homes have less insulation than homes built today but even adding insulation to a newer home can pay for itself within a few years.
Adding extra insulation to the exterior walls of an older home when renovating or remodeling is a great way of improving a home s walls thermal performance and reducing energy use while reducing heating bills carbon footprint and improving a building s comfort level.
In some cases the cost of adding insulation may exceed the cost of energy needed to heat or cool it.
You can also add insulation to existing walls without removing drywall by cutting holes in the exterior siding.
While fiberglass often comes in batts it does come in loose fill form as well making it easy to install without tearing open any walls.
Retrofit wall insulation is a debatable subject because there is no single right answer for all homes and homeowners.
So if your house was built before insulating walls became standard you can potentially save a great deal of energy by insulating.
Unfortunately however builders didn t insulate the walls of most homes built before the 1980s.
How to insulate house walls from the outside.