Buying Guide: Attic Insulation

Insulation is a key factor when trying to get the most out of your energy dollars. By properly insulating and air sealing your home, you can save up to 20% on heating and cooling costs (or up to 10% on total annual energy usage)*. As you begin to review attic insulation solutions, there are a variety of factors to consider:

image of Attic Insulation being installed
  • Where will the insulation be installed?
  • How accessible is the insulation area?
  • What is the level and effectiveness of the existing insulation?
  • How will the insulation be installed?
  • How much insulation is required?
  • What type of insulation will be installed?
  • How to find and seal any air penetrations?

For a free, no obligation in-home estimate, call our Energy & Comfort Consultants at 1-888-BGE-HOME (888-243-4663) or submit the form for more information.

Photo: ©Knauf Insulation

Efficiency & Comfort: Attic Insulation

Attic Insulation can create a more energy efficient and comfortable living environment by making your home warmer in the winter and cooler in the summer. And, since the average home uses approximately 46% of consumed energy on heating and cooling the home, inadequate insulation and air leakage can have a significant impact an energy bill.

  • Maintains Efficiency: Blown-in fiberglass insulation never settles or deteriorates, maintaining the R-Value rating.
  • Prevents Air Infiltration: Attic insulation, combined with air sealing, will stop air leaks and maintain a more comfortable temperature inside.
  • Enhanced Thermal Performance: Blown-in insulation can be installed at any thickness or weight per square foot to achieve a desired R-Value.
  • Less Indoor Noise: Insulation absorbs and reduces noise transmission from the outside, making a quieter home.
  • Effective Coverage: Blown-in insulation can be applied in hard to access areas and on top of existing insulation, without sacrificing effectiveness.

Insulation is rated using a thermal resistance measurement known as an R-Value rating, which is a measurement of the resistance to heat flow. When insulating, the higher the R-Value, the greater the insulation efficiency. According to ENERGY STAR, the recommended level for most attics in Maryland is to insulate to at least R-38 and up to R-60, an insulation depth between 12 and 22 inches (depending on insulation type).

Material Quality: Attic Insulation

Attic insulation can create a more comfortable living environment by helping to maintain a more consistent temperature throughout your home. However, the insulating material is an important consideration. BGE HOME provides blown-in fiberglass insulation for maximum efficiency, safety and longevity.

  • Maintains R-Value rating; never compacts or deteriorates
  • Non-combustible, non-corrosive, non-rotting
  • Resistant to mold, mildew and microbial growth
  • Reduces noise transmission
  • Prevents air infiltration

Environmentally Responsible Insulation


Our fiberglass insulation is certified for indoor air quality standards as a low emitting product by the GREENGUARD Environmental Institute, achieving approval by both the GREENGUARD Certification Program and the more stringent GREENGUARD For Children and Schools. Plus, our insulation is manufactured with up to 40% post consumer recycled glass and sand, is formaldehyde free and is naturally non-combustible, so no additional fire retardant chemical treatments are required.

All GREENGUARD Certified Products have been tested for their chemical emissions performance. For more information, visit

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