If you’ve been thinking about upgrading your attic insulation, you’ve probably heard about spray foam.
Spray foam insulation is one of the most effective insulation materials available today, and it’s becoming increasingly popular. But is it the right fit for your attic?
Let’s take a closer look at what spray foam insulation is, its benefits, its drawbacks, and how to decide if it’s right for your home.
What Is Spray Foam Insulation & How Does It Work
Spray foam is an insulation material made from liquid chemicals that expand and harden as it dries. It’s sprayed directly onto the surface you’re insulating and fills every gap and crack as it’s applied, creating a tight seal that protects against heat and air transfer at the same time.
There are two main types of spray foam insulation:
- Open-cell spray foam: Softer, more flexible, and great for soundproofing. Allows some moisture permeability.
- Closed-cell spray foam: Denser, water-resistant, and higher insulating power (R-value). Ideal for attics in humid climates, where moisture is a concern.
Key Benefits of Spray Foam Attic Insulation
Spray foam is a great option for attic insulation. It creates a tight seal against heat, air, and moisture, completely protecting your attic from the elements.
Here are the top benefits of choosing spray foam over other insulation materials.
1. Higher Energy Efficiency
Spray foam insulation has a high R-value compared to other types of attic insulation. That means it resists heat transfer better, keeping heat in during the winter and blocking it out during the summer.
That can lead to:
- Lower energy costs
- Better comfort
- No more hot/cold spots
- Consistent temperature throughout your house
2. Creates an Airtight Seal
Spray foam creates a tight seal that closes air leaks, stopping drafts and keeping heated/air-conditioned air inside where it belongs.
3. Blocks Moisture & Mold
Closed-cell spray foam is water-resistant. It can block out moisture from leaks or humid air, preventing water damage and mold.
4. Keeps Pests Out
Because it seals gaps and cracks, spray foam makes it harder for insects and rodents to get inside your attic. And, pests don’t use it for nesting material.
5. Adds Structural Support
Closed-cell spray foam is dense and rigid, which can add strength to roof decking and other structural components.
Potential Drawbacks to Consider Before Installing Spray Foam
Spray foam has many benefits, but there are also a few considerations to keep in mind.
- Higher Upfront Cost - Spray foam is usually more expensive than other options. However, it can pay for itself through energy savings over time.
- Professional Installation Required - Spray foam is not a DIY project. It can be a safety hazard and even cause damage to your home if it’s not installed correctly.
- Can Be Difficult to Remove - Spray foam is a permanent insulation solution, which is a benefit, but is something to consider before installing. If you change your mind, removing it can be difficult.
Is Spray Foam Right for Your Attic?
If your attic is under-insulated, poorly sealed, or moisture-prone, spray foam could be the best solution for better comfort, lower energy bills, and long-term protection against the elements. But it’s not the right fit for every home.
At Total Home Performance, we tailor our insulation services to your home and needs. Our team will evaluate your attic and recommend a solution that will provide the highest energy bill savings and comfort improvements.
We’ve been insulating homes in Maryland and Delaware for over 16 years and are proud to be a locally owned and operated business.