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Your attic is one of the most important places to add insulation to keep your energy costs down. How much attic insulation is enough? Learn more about adding insulation to your attic and find out how much is the right amount for your home and your climate.

Check your current amount of attic insulation

Your first step should be to check how much insulation you have. The easiest way to find out if you need more insulation is to see if you can spot your floor joists. If the insulation is at or below your floor joists, you can add more.

By adding attic insulation to your home, you can improve your cooling and heating efficiency.


Of course, this is a general rule of thumb. Before adding insulation, it’s important to consider your climate. The ideal R-value, or the heat flow resistance, of your insulation varies depending on average temperatures in your area.

You should also check your current insulation for any signs of water damage or other concerns. Don’t cover up a maintenance issue with new insulation before you have it inspected and repaired. Have a professional inspect any unusual issue in your attic before adding insulation.

Add insulation to meet the recommended levels

A good rule of thumb is about 10 to 14 inches, or R-38, in your attic. Measure your current insulation and add additional layers until you reach this mark. If you already have this much insulation, additional layers won’t significantly affect your home’s energy efficiency.

When adding insulation, check to see if your attic has rafter vents. You may need to add vents or extend vents to ensure your new layer of insulation doesn’t block your attic ventilation system. Attic vents are affordable and easy to install.

If your home already has the full amount of insulation and you’re still looking for ways to lower your utility bills, work with our team at Heblon Heating & Air Conditioning to find more ways to save money.

How to choose the right type of insulation

There are a number of types of insulation available. While it can be daunting to find the best option, you don’t have to worry about perfectly matching your current insulation.

The most common insulation material is fiberglass. Mix and match loose-fill fiberglass and fiberglass batts in your attic. Be sure to choose unfaced batts if you’re adding an additional layer of insulation.

Faced fiberglass batts have a layer of paper or foil backing. This backing acts as a moisture barrier. Your attic should have a moisture barrier at the bottom of your insulation, but not in between layers of insulation.

Learn more ways to improve your home energy-efficiency

Installing insulation in your attic is just the first step. While you should see savings on your monthly heating and air conditioning bills, there are other ways you can reduce your bills and save money.
Attic insulation is one of the easiest ways to improve your home’s energy-efficiency.

Contact us at Heblon Heating & Air Conditioning to learn about other tips and tricks for reducing your energy bills. We provide HVAC tune-ups that can reduce the costs of your AC and furnace.