Adding Insulation to an Existing Home

Unless your home was specially constructed for energy efficiency, you can usually reduce your energy bills by adding more insulation. Many older homes have less insulation than homes built today, but adding insulation to a newer home may also pay for itself within a few years.

To determine whether you should add insulation, you first need to find out how much insulation you already have in your home and where.

A qualified home energy auditor will include an insulation check as a routine part of a whole-house energy assessment. An energy assessment, also known as a home energy audit, will also help identify areas of your home that are in need of air sealing. (Before you insulate, you should make sure that your home is properly air sealed.)

If you don’t want an energy assessment, you need to find out the following:

  • Where your home is, isn’t, and/or should be insulated
  • What type of insulation you have
  • The R-value and the thickness or depth (inches) of the insulation you have

If you live in a newer house, you can probably find out this information from the builder. If you live in an older house, you’ll need to inspect the insulation yourself if you don’t want an energy assessment.