Choosing the right insulation for your home is a critical decision that affects your comfort, energy bills, and the long-term efficiency of your living space.
The right insulation ensures that your home stays warm in the winter, cool in the summer, and free from excessive energy waste. But with so many insulation types available, how do you decide which one is best for your needs?
Among the most commonly used insulation types are blown-in insulation and spray foam insulation. Both have their advantages and applications, but not all insulation methods offer the same level of performance, efficiency, or longevity.
Understanding Blown-In Insulation
Blown-in insulation consists of small, loose-fill particles that are blown into spaces using specialized equipment.
It is commonly used for attics, walls, and other areas where traditional batt insulation would be difficult to install. The most common materials for blown-in insulation include cellulose, fibreglass, and mineral wool.
Types Of Blown-In Insulation
- Cellulose Blown-In Insulation
- Made from recycled paper products, treated with fire retardants.
- Offers decent insulation performance but is prone to settling over time.
- Can absorb moisture, leading to mould growth and reduced effectiveness.
- Fibreglass Blown-In Insulation
- Composed of tiny glass fibres and is naturally resistant to moisture.
- Less expensive but has a slightly lower R-value compared to cellulose.
- Lightweight and easy to install but less effective at sealing air leaks.
- Mineral Wool Blown-In Insulation
- Created from volcanic rock or industrial byproducts.
- Offers high fire resistance and good soundproofing qualities.
- More expensive than cellulose or fibreglass and less commonly used.
Advantages Of Blown-In Insulation
- Lower Initial Cost: One of the most affordable insulation methods.
- Fast Installation: Can be quickly applied using a blower machine.
- Fills Small Spaces: Works well in irregular or hard-to-reach areas.
Limitations Of Blown-In Insulation
- Settling Over Time: Can lose insulation effectiveness as it compacts.
- Moisture Retention: Particularly in cellulose, increasing mould risk.
- Lower R-Value: Less effective per inch compared to spray foam insulation.
- Requires a Vapour Barrier: To minimize moisture issues and prevent degradation.
Exploring Spray Foam Insulation
Spray foam insulation is an advanced solution that expands upon application, creating a dense and continuous insulation layer.
Unlike blown-in insulation, which can shift and settle, spray foam adheres to surfaces, creating an airtight seal that prevents air leakage and enhances overall home efficiency.
Types Of Spray Foam Insulation
- Open-Cell Spray Foam
- Lighter and softer, with a sponge-like texture.
- Provides excellent soundproofing and air sealing.
- Lower R-value compared to closed-cell foam but still effective.
- Closed-Cell Spray Foam
- Denser and more rigid, with a higher R-value per inch.
- Provides additional structural strength to walls and roofs.
- More resistant to temperature fluctuations and long-term durability.
Advantages Of Spray Foam Insulation
- Superior Energy Efficiency: Reduces energy costs significantly.
- High R-Value: Offers the best thermal insulation available.
- Eliminates Air Leaks: Forms a continuous barrier, unlike blown-in insulation.
- Does Not Settle Over Time: Provides long-lasting performance.
- Adds Structural Integrity: Closed-cell spray foam reinforces walls and roofs.
Limitations Of Spray Foam Insulation
- Higher Initial Cost: More expensive than blown-in insulation.
- Requires Professional Installation: Needs specialized equipment and expertise.
Comparing Performance: Blown-In Vs. Spray Foam Insulation
1. Thermal Performance (R-Value)
The R-value measures the insulation’s resistance to heat flow—the higher the R-value, the better the insulation.
- Blown-in insulation typically has an R-value of 2.2 – 3.8 per inch.
- Spray foam insulation (closed-cell) boasts an impressive 6.5 – 7 per inch.
Winner: Spray foam insulation offers superior thermal performance.
2. Air Sealing Capability
- Blown-in insulation does not seal air leaks, leading to heat loss.
- Spray foam insulation creates an airtight seal, improving efficiency.
Winner: Spray foam insulation, by a large margin.
3. Durability And Longevity
- Blown-in insulation degrades and compresses over time, reducing effectiveness.
- Spray foam insulation maintains its form and insulation properties for decades.
Winner: Spray foam insulation lasts longer with no loss in performance.
4. Installation And Coverage
- Blown-in insulation is quicker and easier to install but leaves small gaps.
- Spray foam insulation requires a professional installer but provides full coverage.
Winner: Spray foam insulation for a more precise and complete application.
Cost Considerations: Short-Term Vs. Long-Term Savings
- Blown-in insulation has a lower upfront cost but requires maintenance or topping up.
- Spray foam insulation costs more initially but saves significantly on energy bills.
- Homeowners who choose spray foam insulation often recover their costs within a few years due to lower heating and cooling expenses.
Verdict: Why Spray Foam Insulation Is The Better Choice
✔ More effective insulation (higher R-value)
✔ Stops air leaks, improving energy efficiency
✔ Does not degrade or settle over time
✔ Reduces energy costs long-term
About Us
Classic Spray Foam is Edmonton’s trusted insulation expert, specializing in high-performance spray foam insulation for custom homes.
Contact us today to upgrade your insulation and enhance your home’s efficiency. Visit Classic Spray Foam for more information.