The Complete Guide to Choosing the Right Attic Insulation Material

Proper attic insulation is crucial for maintaining energy efficiency. It will reduce heating and cooling costs significantly, maintaining comfortable indoor temperatures. However, selecting the right attic insulation materials is crucial for maximum benefits. In this blog post, we will help you understand the best insulation materials for the attic. Explore more below.

Popular Types of Attic Insulation Materials for Homes

There are four popular attic insulation types for homes. Check them out below:

1. Fiberglass Batt Insulation

This is the most common insulation material for homes. Fiberglass is eco-friendly as it is created from sand and then transformed into glass, making it a renewable energy source. It is fire-resistant and rarely shrinks or collapses. It is ideally used in walls and is a great option for homeowners looking for reliable attic insulation installation.

2. Blown-In Fiberglass Insulation

Blown-in fiberglass insulation is one of the best insulating materials for the attic. It is an ideal choice for new home construction. It also uses fiberglass but doesn’t need as much manual labour. It uses a blowing machine to be blown in. If you are looking for energy-efficient attic insulation material, it is a better choice.

3. Blown-In Cellulose Insulation

This attic insulation material is also blown in with a blowing machine but the material here is different. It is made of cellulose, all recycled material including wood, cardboard, and newspapers. The product is treated against fire and psts.

4. Spray Foam Insulation

Spray foam insulation is a popular choice, especially for flat and cathedral ceilings. Known for its high R-value, it delivers excellent thermal performance, making it ideal for hard-to-insulate areas like roof and ceiling cavities. While it comes with a higher upfront cost compared to other options, the energy savings over time can make it a smart long-term investment.

Fiberglass vs Spray Foam Insulation

Choosing between fiberglass and spray foam insulation requires consideration of some important factors such as budget, insulation properties, and air sealing requirements.

Fiberglass Insulation

• One of the most cost-effective attic insulation materials.

• Easy to install.

• Has good thermal insulation but can allow some air movement.

• Can absorb moisture which poses the risk of mold growth and inefficient.

  
  

Spray Foam Insulation

• Expands to fill gaps, ensuring an airtight seal.

• Higher R-value ensures better insulation per inch (RSI) as compared to fiberglass.

• Moisture-resistant properties reduce the risk of mold and mildew.

• Comparatively expensive than fiberglass but helps save money in the long run.

  
  

Blown-In vs Batt Insulation

Blown-In Insulation

• Installed using a blowing machine to evenly distribute loose-fill material.

• Offers better coverage by reducing gaps and air leaks.

• Best insulation material for the attics with obstructions or irregular shapes.

Batt Insulation

• Ideal for attics with standard joist spacing and fewer obstructions.

• Proper installation is essential to leave no gaps.

• Less effective in preventing air leakage compared to blown-in insulation options.

Making the Right Choice

Selecting the best attic insulation material depends on different factors such as climate, home architecture, and budget. We suggest consulting a professional contractor to make the best choice.

John McLellan Contracting Inc. is a trusted full service general contractor in Durham Region, including Oshawa, Whitby, Ajax, Pickering, and Uxbridge, offering the best attic insulation materials to meet clients’ unique needs. We will help you find the best insulation material for your attic. Get in touch with us today at 905-767-1240 to book a consultation.