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New Construction Insulation vs. Retrofit Insulation

You may have heard the terms “new construction insulation” and “retrofit insulation,” especially if you’re building a new home, remodeling or looking for ways to make your home more energy-efficient. An insulation company like ThermaSeal / Lakeside Insulation will be able to set you straight on the difference between new construction insulation and retrofit insulation.

Insulation retrofitting is different than insulating a home that is being built. A new home uses new construction insulation, which can be any material—fiberglass, cellulose, foam or radiant barrier. Insulation retrofitting is insulating an existing home, or re-insulating. Retrofit insulation is also sometimes referred to as remodeling insulation.

Re-insulation is sometimes necessary if your home wasn’t built with enough insulation (this is the case for many older homes) or if the new construction insulation wasn’t installed correctly.

Do You Need to Re-Insulate?

How do you know if you need to re-insulate? Other than an insufficient amount of insulation or incorrect insulation installation, which can be difficult for homeowners to actually determine on their own, there are several signs that indicate you may need more insulation:

  • Your energy bills have been significantly higher than normal
  • It’s drafty and uncomfortable in your home
  • Temperatures from room to room aren’t even
  • The AC is running more than normal in the summer
  • In the winter, snow is melting off your roof too quickly and/or ice dams are forming (which means you may not have enough attic insulation)

These aren’t all the signs, of course, but they are ones that are pretty easy for homeowners to detect on their own. However, talking to a professional insulation company is always the best course of action.

New Construction & Retrofit Insulation

Whether you’re insulating a new home or re-insulating to increase your home’s energy efficiency and overall comfort, there are lot of different insulation materials and considerations.

You can insulate your home with:

The type(s) of insulation you install will depend on different factors, including:

  • Where you need to insulate in your home
  • Where you live
  • How old your home is
  • The type of HVAC equipment you have
  • And more

A professional insulation company will be able to tell you what type of insulation you need (and how much you need).

Insulation Installation in Chicago

If you live in the Chicago area and need an insulation company, ThermaSeal / Lakeside Insulation can help. Contact us to learn more or if you’re ready to insulate your home.

Products We Install

Our team installs both batt and blown-in fiberglass insulation.


Help prevent mold and excessive moisture infiltration in homes you build with our waterproofing services.


At Thermaseal / Lakeside Insulation, we understand the role a floor plays within a building system by controlling sound and fire.

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