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Exploring Different Types of Attic Insulation Materials in Canada

Attic Insulation material

Proper insulation is essential for maintaining a comfortable and energy-efficient home, and one area that deserves particular attention is the attic. In Canada’s climate, where winters can be harsh and summers hot, choosing the right type of insulation for your attic is crucial. This article will introduce you to various attic insulation materials available in Canada, highlighting their features, benefits, and considerations. Understanding these options will help you make an informed decision when it comes to insulating your attic.

1. Fiberglass Insulation

Fiberglass insulation is one of the most common and affordable types of insulation used in Canadian attics. It is composed of fine glass fibers and is available in either batts or loose-fill form.

Key features of fiberglass insulation:

  • Excellent thermal performance: Fiberglass has good insulating properties, helping to reduce heat transfer and maintain consistent indoor temperatures.
  • Non-combustible: Fiberglass insulation is non-combustible, which makes it a safer option for attics.
  • Easy installation: Batts can be rolled out or cut to fit between attic joists, while loose-fill fiberglass can be blown into hard-to-reach areas.
  • Moisture resistance: Fiberglass insulation is not prone to absorbing moisture, reducing the risk of mold or mildew growth.
Attic insulation material Fiberglass Insulation


  • Affordable and widely available.
  • Good thermal performance, helping to regulate temperatures.
  • Non-combustible, enhancing fire safety.
  • Easy installation for both batts and loose-fill.
  • Resistant to moisture and mold growth.


  • Can cause skin and respiratory irritation during installation.
  • Prone to compression if not installed properly, reducing effectiveness.
  • Limited air sealing properties, allowing air leakage if not supplemented with additional measures.

2. Cellulose Insulation

Cellulose insulation is an eco-friendly choice made from recycled paper products treated with fire-retardant chemicals.

Key features of Cellulose Insulation:

  • High thermal resistance: Cellulose has excellent insulating properties, providing effective temperature regulation in attics.
  • Great for existing homes: Its loose-fill nature allows cellulose to be blown into cavities and around obstacles, making it suitable for retrofitting.
  • Soundproofing capabilities: Cellulose insulation also helps reduce noise transmission, enhancing the acoustic comfort of your home.
  • Fire resistance: The fire-retardant treatment applied to cellulose insulation enhances its fire resistance.
Attic Insulation material Cellulose Insulation


  • Made from recycled materials, environmentally friendly.
  • Effective thermal performance, reducing heat transfer.
  • Great for retrofitting due to its loose-fill nature.
  • Provides soundproofing benefits.
  • Fire-resistant with the application of fire-retardant chemicals.


  • Can settle over time, reducing its insulating properties.
  • Can absorb moisture if not properly sealed or protected.
  • Requires professional equipment for installation.
  • Potential for dust and fine particles during installation.

3. Spray Foam Insulation

Spray foam insulation is a versatile option that expands upon application, providing an airtight seal. It is typically applied as a liquid and quickly solidifies into a foam.

Key features of Spray Foam Insulation:

  • Superior air sealing: Spray foam insulation fills gaps and cracks, creating an effective barrier against air leakage and preventing heat loss.
  • High R-value: Spray foam has excellent insulation properties, offering a high R-value per inch, which translates to better energy efficiency.
  • Moisture and mold resistance: The closed-cell variant of spray foam insulation is resistant to moisture, helping to prevent mold and mildew growth.
  • Professional installation: Due to its specialized application process, it is recommended to hire professionals for spray foam insulation.
Attic Insulation material Spray Foam Insulation


  • Excellent air sealing properties, reducing drafts and air leakage.
  • High R-value, providing superior thermal insulation.
  • Versatile and can be applied to various types of attics.
  • Can improve structural strength and stability.
  • Moisture-resistant and helps prevent mold and mildew growth.


  • Higher cost compared to other insulation materials.
  • Requires professional installation due to specialized equipment and expertise.
  • Some types of spray foam can off-gas during installation, requiring proper ventilation.
  • Difficult to remove or modify once installed.
  • Not a DIY-friendly option.

4. Mineral Wool Insulation

Mineral wool, also known as rock wool or slag wool, is made from natural minerals such as basalt or slag. It comes in batt or loose-fill form.

Key features of Mineral Wool Insulation:

  • Excellent fire resistance: Mineral wool is non-combustible and can withstand high temperatures, making it a safe option for attic insulation.
  • Sound absorption: Mineral wool has excellent sound-dampening properties, reducing noise transmission between rooms or floors.
  • Moisture resistance: Mineral wool is resistant to moisture and can help regulate humidity levels in the attic.
  • Resistant to pests: The dense and compact nature of mineral wool makes it less appealing to pests, such as rodents or insects.
Attic Insulation material Mineral Wool Insulation


  • Excellent fire resistance, acting as a fire barrier.
  • Great sound absorption, reducing noise transmission.
  • Moisture-resistant and helps regulate humidity levels.
  • Pest-resistant due to its dense structure.
  • Long-lasting and retains its insulating properties over time.


  • Higher cost compared to fiberglass and cellulose.
  • Heavier and denser, requiring proper support during installation.
  • Less readily available compared to other insulation materials.
  • Fibers can cause skin and respiratory irritation during installation.
  • Requires protective gear during handling due to potential irritation.

It’s important to consider these pros and cons alongside your specific needs, budget, and goals when selecting the most suitable attic insulation material for your Canadian home. Consulting with insulation professionals can provide further guidance and ensure the best insulation solution for your specific circumstances.

Attic Insulation Company Toronto

Mas Air Home Comfort has long been the No.1 choice for commercial and residential homes, heating and cooling projects, and home insulation in Greater Toronto and surrounding areas. We are committed to providing our customers with energy-efficient home heating and cooling projects. We aim at providing you and your family with the healthiest, most comfortable, and safest living experience possible all year round. Our HVAC and home insulation specialists offer all types of services, including furnaces, air conditioners, home insulation, water heaters, emergency repairs, and more. With our professionally certified and experienced service staff, we ensure you the best possible service available.

We are committed to providing the highest quality equipment, installation, and construction services at the most competitive prices in the market. Our technicians adhere to strict hygiene requirements, and all equipment and personnel are disinfected, gloved, masked, and fully vaccinated to comply with Covid-19.

Contact us at:

Tel: 1-855-795-1199

Email: [email protected]

Address: 6730 Davand Dr, Unit 8, Mississauga, ON L5T 2K8, Canada


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