Mastering Attic Insulation: A Comprehensive Guide for Homeowners

When insulating your home, it can be easy to overlook the areas you don’t see. Despite this, it’s more important than ever to insulate your attic. A properly insulated attic offers several benefits, including better energy efficiency, lower heating and cooling costs, and improved overall comfort. If you’re ready to optimize your home’s energy efficiency, look no further than this guide.

What is Attic Insulation?

Attic insulation is a material that reduces heat transfer between your attic and the living spaces below. It creates a barrier that helps you maintain a comfortable temperature throughout your home by preventing warm air from escaping in the winter and keeping it out during the summer. Insulating your attic improves your home’s insulation and lowers energy bills.

You can insulate your attic using various materials, including fiberglass, spray foam, cellulose, and batt insulation. These materials improve energy efficiency and prevent mold growth, pest infestations, and moisture buildup.

What Benefits Does Attic Insulation Offer Homeowners?

Attic insulation comes with a plethora of benefits for homeowners. Check out some of the reasons you should prioritize insulating your attic. 

  • Energy Efficiency

Did you know that insulating your attic is one of the best ways to reduce your energy costs? It prevents heat from escaping by decreasing the amount of work for your heating and cooling systems. This is a quick way to slash your energy bills!

  • Home Comfort

As you probably already know, insulation improves home comfort. However, attic insulation takes things to the next level. It keeps the warm air in during the winter and out when summer rolls around. 


  • Higher Property Value

When you invest in attic insulation, you invest in your home. Buyers will appreciate saving money on their future energy bills and feeling comfortable. It’s a surefire way to make your property more attractive when it’s time to sell.

  • Prevents Moisture and Mold

If your attic isn’t adequately insulated, moisture can become a breeding ground for mold growth. In turn, this can lead to structural damage. The proper insulation will prevent these problems by regulating temperature and airflow. 

  • Reduces Noise

Another thing that most people don’t know is that attic insulation reduces transmission. How does it work? It blocks outside sounds and minimizes internal noise from upstairs areas.

What Types of Attic Insulation Are There?

Several types of attic insulation are available. Which one is right for you? The answer to that question depends on your specific needs. Let’s learn more about each one.

  • Fibreglass Insulation

Known as one of the most common types of insulation, fiberglass is affordable, highly effective, and easy to install. Fibreglass batt insulation is ideal for attics and walls because of its thermal resistance.

  • Spray Foam Insulation

Spray foam insulation is unique and valuable for several reasons. Expanding upon the application fills cracks and gaps, creating an airtight seal. Since attics are often small, hard-to-reach areas, this insulation is excellent for air sealing and keeping moisture out.


  • Cellulose Insulation

If you’re looking for a sustainable way to insulate your attic, cellulose insulation is the way to go. Made from recycled paper products, it’s blown into the attic and provides excellent thermal resistance. 

How is Attic Insulation Installed?

Attic insulation requires careful planning and proper preparation for maximum effectiveness. Here’s a step-by-step walkthrough of the process.

  • Assess the Current Insulation

Before installing new insulation, the existing attic insulation is evaluated. If it’s damaged or no longer doing its job, it will be removed to make room for new insulation.

  • Choose the Right Material

Depending on your budget, home requirements, and climate, the right insulation material won’t be the same as someone else’s. Spray foam, fiberglass, and cellulose insulation are the most popular options. 

  • Seal Gaps and Cracks

Before installing a new installation, gaps and cracks in the attic should all be sealed off. This prevents air from leaking, which improves the performance of the insulation. 

  • Install Insulation

The insulation is usually laid evenly across the attic floor, covering all areas. In the case of spray foam, it’s applied in layers to seal off the attic completely.

  • Add a Vapour barrier (If Needed)

If you live in an area with high humidity, consider adding a vapor barrier to prevent moisture from building up in your attic. Too much moisture will damage your insulation. 

  • Professional Installation

While you can install your insulation, your best bet is to contact a professional insulation contractor. This will ensure the job is done right and helps prevent mistakes that could stop your home from fully benefitting from its new insulation. 

How Do You Maintain Attic Insulation?

Once you insulate your attic, you must maintain your insulation to ensure it continues to perform. Here are some best ways to keep your attic in top shape.

  • Check for Damage

Regularly check your insulation for signs of damage, such as compression or moisture. These issues can stop your insulation from performing to its full potential. 

  • Look For Air Leaks

If air leaks into your attic, it can compromise the effectiveness of your insulation. You can do this by checking your attic for drafts and properly sealing your vents.

  • Ensure Proper Ventilation

Having the proper ventilation for your attic will prevent moisture build-up. Keeping your insulation dry is key to helping it remain functional. 

Update Your Attic Insulation Today!

Understanding how attic insulation works is essential in making your home more energy-efficient and comfortable. Choosing the right materials, ensuring proper insulation, and maintaining your insulation over time will allow you to reap the benefits of lower energy bills, improved comfort, and home value. 

Ready to improve your attic insulation? Great Canadian Insulation is here to help. Contact us today to schedule a consultation with one of our professional contractors.

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When and How to Safely Remove Attic Insulation