• 15121 Marlboro Pike, Upper Marlboro, MD 20772
    260 East Boulevard North Hagerstown, MD 21740
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Cavity Wall Insulation

Most newer homes in the Washington, DC area (and across the United States) have cavity walls—and insulating them is important. Cavity walls are two walls/materials separated by a hollow space (cavity). The materials are often masonry such as brick or concrete block.

Contact Accurate Insulation for a quote on your project, or keep reading to learn more!

Insulation for Cavity Walls

Insulation can be installed to help reduce heat loss through a cavity wall by filling the empty space with material that helps stop heat transfer. Cavity walls (in homes and commercial buildings) are often insulated when they are first built—but retrofit installation projects can be completed as well. Cavity wall insulation is usually blown into the cavity from the outside of the house.

Your home may need cavity wall insulation if:

  • Its external walls are unfilled cavity walls
  • The cavity is at least 50 millimeters wide
  • It is more than a couple decade old (homes built in the 1970s or earlier are more likely to not be insulated enough)

Keep in mind that it’s always a good idea to ask a professional. Someone on our team can assess your home’s walls and determine the right solution. Different materials can be used to insulate cavity and external walls, but in Maryland, spray foam insulation and fiberglass insulation are most often used.

Cavity Wall Insulation Contractors Serving MD & DC

Interior and exterior wall insulation can help you maximize your home’s energy efficiency and save the most money. As one of the biggest sources of energy loss in homes, walls should always be properly insulated.

Contact Accurate Insulation to learn more about our wall insulation services or to get a free estimate for your project!

Products We Install

Our insulation team adds energy efficiency, comfort & value to homes & buildings.

Spray Foam

Accurate Insulation is proud to be a leading installer of spray foam insulation.


Environmentally friendly and effective, cellulose works well in homes and buildings.

Radiant Barrier

We can help keep your home cooler and more comfortable with an attic radiant barrier.

Garage Doors

When you turn to Accurate Insulation for garage doors, you work with a great team.


No matter your gutter needs, the Accurate Insulation team has you covered.


Accurate Insulation is proud to be a leading supplier of quality window blinds.

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