13 Major Benefits of Installing Spray Foam Insulation

October 3rd, 2024

Spray foam insulation has become a top choice for homeowners and contractors due to its superior performance in energy efficiency, moisture resistance, and more. When compared to traditional insulation types, spray foam stands out in almost every category.

Let's dive into the 13 major benefits of installing spray foam insulation.

1. High R-Value Per Inch

Spray foam insulation, particularly closed-cell spray foam, offers one of the highest R-values per inch in the market—ranging from R-6 to R-7. This means better thermal resistance with less material, allowing for more energy efficiency with less space taken up by insulation.

  • Why it matters: Higher R-value means your home stays warmer in winter and cooler in summer without the need for thick layers of insulation.

2. Space-Efficient

Because of its high R-value, spray foam is incredibly space-efficient. You don’t need to fill walls with thick layers of insulation to achieve optimal thermal resistance. This is particularly useful for homes with limited wall space, like older or historic buildings.

  • Why it matters: Maximizing interior space without sacrificing insulation performance can make your home feel larger and more open.

3. Cost Savings Over Time

Installing spray foam insulation can lead to significant cost savings in the long run. It reduces the load on your HVAC system by preventing air leaks and maintaining a more consistent indoor temperature, which results in lower energy bills.

  • Why it matters: Over time, these savings can help offset the initial investment in spray foam installation and reduce wear and tear on HVAC systems.

4. Creates an Air Barrier

One of the standout features of spray foam insulation is its ability to form an airtight barrier. This helps eliminate air leakage, a common issue in homes with older insulation materials like fiberglass or cellulose.

  • Why it matters: An air barrier prevents drafts, making your home more comfortable and reducing energy loss.

5. Acts as a Vapor Barrier

In addition to being an air barrier, closed-cell spray foam also acts as a vapor barrier, which helps prevent condensation from forming inside walls. This is particularly important in areas with fluctuating temperatures and high humidity.

  • Why it matters: Reducing condensation protects your home from moisture-related issues like mold, mildew, and rot.

6. Moisture and Waterproof Protection

Closed-cell spray foam is not just resistant to moisture; it’s waterproof. Its closed-cell structure prevents water from seeping through, making it ideal for areas prone to flooding or high humidity.

  • Why it matters: In the event of a flood, spray foam insulation will retain its properties and continue to insulate your home effectively, protecting against mold and water damage.

7. Mold and Mildew Protection

Because of its water resistance and ability to prevent air and moisture infiltration, spray foam reduces the risk of mold and mildew growth. This is critical for maintaining a healthy indoor environment.

  • Why it matters: Mold and mildew not only damage your home but can also pose significant health risks. Spray foam helps minimize these risks.

8. Adds Structural Strength

Closed-cell spray foam insulation hardens into a rigid layer, which adds structural strength to walls, ceilings, and roofs. This makes your home more resistant to strong winds, shifting, and other external forces.

  • Why it matters: In areas prone to storms or high winds, this added structural support can make a big difference in the longevity of your home.

9. Provides Soundproofing

While it's known primarily for its insulation properties, spray foam also offers soundproofing benefits. Its dense structure absorbs sound waves, reducing noise pollution from both inside and outside the home.

  • Why it matters: Whether you live in a noisy area or simply want to reduce sound transfer between rooms, spray foam can make your home quieter and more peaceful.

10. Long-Term Durability

Unlike traditional insulation materials that may sag or degrade over time, spray foam maintains its performance for decades. Once applied, it doesn’t settle or compress, ensuring long-term durability.

  • Why it matters: You'll enjoy the same energy-saving benefits years after installation without needing frequent replacements or repairs.

11. Pest Deterrent

Unlike other types of insulation, spray foam doesn’t provide a welcoming environment for pests like mice or insects. Its hard surface makes it difficult for animals to burrow through or nest inside walls.

  • Why it matters: You’ll have fewer issues with rodents or bugs getting into your home through the insulation.

12. Improves Indoor Air Quality

Because spray foam seals your home from outside air, it helps control the indoor air quality by reducing pollutants, allergens, and moisture. This is especially important for individuals with asthma, allergies, or respiratory issues.

  • Why it matters: Better air quality contributes to a healthier living environment for you and your family.

13. Quick Installation Process

One of the perks of spray foam insulation is the quick installation process. A professional team can often complete the insulation process in a single day, depending on the size of the project.

  • Why it matters: One of the perks of spray foam insulation is the quick installation process. A professional team can often complete the insulation process in a single day, depending on the size of the project.

Bonus: Eco-Friendly and Eligible for Rebates

Spray foam insulation can also be considered eco-friendly due to its energy-saving properties. By reducing your energy consumption, you’re lowering your home’s carbon footprint. Additionally, Enbridge and the Government of Canada offer rebates for installing energy-efficient solutions like spray foam insulation.

  • Why it matters: Not only are you saving money, but you’re also doing your part to help the environment.


Spray foam insulation offers numerous benefits that go far beyond traditional options. From cost savings and moisture protection to pest deterrence and soundproofing, it’s a versatile solution that enhances your home’s comfort and energy efficiency.

At Big Blue Insulation, we specialize in closed-cell spray foam installation, ensuring your home gets the best protection and performance possible. Contact us today to learn more about how spray foam can benefit your home and help you take advantage of available rebates.