If you’re looking to lower your energy bills and keep your home comfortable year-round, spray foam insulation might be the upgrade you need. In Raleigh’s changing climate—hot, humid summers and cold winters—having the right insulation makes a huge difference.
In this guide, we’ll break down how spray foam insulation works, why it’s one of the most energy-efficient choices, and what to know before getting started.
Why Spray Foam Insulation Boosts Energy Efficiency
Spray foam insulation does more than just keep your home warm in winter and cool in summer. It seals up small gaps, cracks, and leaks that let air sneak in or out of your home.
Here’s what makes it so effective:
- Blocks Air Leaks: Spray foam expands to fill tiny spaces, stopping unwanted airflow.
- Better Temperature Control: Your HVAC system doesn’t have to work as hard, which means lower energy use.
- Strong Moisture Barrier: Keeps out moisture that can lead to mold and rot.
- Long Lifespan: Once installed, spray foam lasts for decades without losing its performance.
Types of Spray Foam: What’s the Difference?
There are two main types of spray foam used in homes: open-cell and closed-cell. Each one has its own strengths depending on where it’s installed.
Open-Cell Foam
- Lighter and softer
- Great for interior walls and attic insulation
- Absorbs sound well
- Lower cost than closed-cell
- R-value around 3.5 per inch
Closed-Cell Foam
- Dense and rigid
- Stronger moisture barrier
- Works well in basements, crawlspaces, and roofs
- Higher insulation power (R-value of 6.5 per inch)
- More expensive but more durable
Quick Comparison: Open-Cell vs. Closed-Cell
| Feature | Open-Cell Foam | Closed-Cell Foam |
|---|---|---|
| R-Value per inch | About 3.5 | About 6.5 |
| Moisture Barrier | Low | High |
| Soundproofing | Very Good | Moderate |
| Cost | Lower | Higher |
| Best Use | Attics, interior walls | Basements, roofs, exteriors |
How Spray Foam Helps You Save Energy
By sealing your home tightly, spray foam insulation helps keep outdoor air from sneaking in and indoor air from escaping. That means:
- Your air conditioner and heater won’t have to run as often
- You’ll see lower heating and cooling bills
- Your home stays more comfortable year-round
Bonus Tip:
The U.S. Department of Energy reports that sealing and insulating your home can cut energy costs by up to 15% on average.
What to Know Before Installing Spray Foam Insulation
Not every home is the same, and not every insulation job is straightforward. Here are some important things to think about before starting an insulation project.
1. Raleigh’s Climate
Spray foam insulation services in Raleigh are great homes because it handles both hot summers and cold winters well. It also helps reduce humidity, which is common in this region.
2. Ventilation Matters
Because spray foam creates an air-tight seal, you’ll want to make sure your home has enough ventilation. This keeps indoor air fresh and safe.
3. Energy Rebates and Local Programs
There might be energy rebates available for Raleigh homeowners who upgrade their insulation. Always check with local utility providers or energy-efficiency programs.
4. Building Code Requirements
Some areas have specific rules about how insulation should be installed, including fire protection or thickness levels. Be sure to ask your contractor about this.
5. New Build vs. Retrofit
Installing spray foam in a brand-new home is easier, but it can also be added during renovations or upgrades. Just keep in mind that some prep work might be needed.
How Spray Foam Compares to Other Insulation Materials
| Material | R-Value per Inch | Air Seal | Moisture Resistance | Lifespan |
|---|---|---|---|---|
| Spray Foam (Closed) | 6.5 | Yes | High | 20+ years |
| Spray Foam (Open) | 3.5 | Yes | Low | 20+ years |
| Fiberglass | 2.2–2.7 | No | Low | 10–25 years |
| Cellulose | 3.2–3.8 | No | Low | 20–30 years |
Real Market Insight: Why Homeowners Are Making the Switch
More homeowners in Raleigh are switching to spray foam insulation because:
- Utility costs are rising
- Homes are being built tighter and more energy-efficient
- People want better control over their indoor comfort and humidity
According to ENERGY STAR, the average U.S. household spends over $2,000/year on energy bills. Good insulation can cut those costs significantly.
Common Questions from Homeowners
It’s normal to have a few questions before making the leap into spray foam insulation. Here are a few we hear a lot:
Q1: Is spray foam safe for my family?
Yes, once cured, it’s safe. It’s important to stay out of the home during installation and let it fully cure—usually 24 hours.
Q2: Will this reduce outside noise?
Yes! Open-cell spray foam is especially good at blocking sound from neighbors or busy roads.
Q3: Can I install spray foam myself?
This is a job best left to the pros. The materials are tricky to handle, and the application process needs to be done correctly.
Q4: How long will it last?
Spray foam typically lasts 20 years or more without needing replacement.
Q5: Will this help my home in both summer and winter?
Definitely. It keeps warm air in during the winter and cool air in during the summer.
Final Thoughts: Is Spray Foam Right for Your Home?
If you want a home that’s more comfortable, quieter, and more energy-efficient, spray foam insulation is a smart investment. It’s especially useful in places like Raleigh, where the weather can be unpredictable and humidity can be high.
It’s not just about comfort either—spray foam helps you save money, reduce your energy use, and extend the life of your HVAC system.
Need Help with Insulation? Talk to a Local Expert
For homeowners who want reliable results and guidance, working with an experienced contractor can make all the difference. Raleigh Excel Spray Foam Insulation is a trusted local provider that understands Raleigh’s climate and insulation needs.
Contact Information
Company: Raleigh Excel Spray Foam Insulation
Phone: (919) 301-9435
Email: [email protected]
Website: Learn more about their services