Basement walls are prone to cracks and degraded (or nonexistent) insulation, leading to a myriad of symptoms you can feel throughout your home. Choosing the right insulation for your basement boosts your home’s comfort and air quality while reducing your energy bills.
At Vermont Foam Insulation, we specialize in upgrading homes across the state and even into New Hampshire with insulation removal and high-performance spray foam and cellulose insulation.
When it comes to basement walls, spray foam insulation stands out as the best choice for long-term performance, moisture control, and indoor air quality.
Why Basement Insulation Matters
Basement walls sit directly underneath the conditioned spaces of your home. Whether your basement is finished or unfinished, this area plays a major role in your home’s energy efficiency and comfort. Without proper insulation, basements often experience:
- Uncontrolled heat loss
- Cold floors above the basement
- Damp or musty smells
- Pest infestations
- Mold growth and poor indoor air quality
- High energy bills in winter and summer
Because basements in New England are partially or fully below grade, they’re prone to ground moisture intrusion. Concrete and block walls can absorb and transfer moisture, even without visible leaks. That’s why a high-performance, encapsulated insulation solution—one that seals and insulates—is essential.
The Best Insulation for Basement Walls: Spray Foam
Spray foam insulation is, in our experience, the most effective option for insulating basement walls. Here’s why:
1. Air Sealing + Moisture Control in One Step
Unlike fiberglass batts or rigid foam boards, spray foam acts as both an insulator and an air barrier. It tightly seals gaps and cracks, reducing the risk of mold and mildew by minimizing the movement of warm, moist air that can condense on cool basement walls.
2. Improved Indoor Air Quality
Basements are often a major source of allergens, musty odors, and air leaks that travel upward into your living spaces. Spray foam helps prevent outdoor air, dust, and moisture from entering through foundation walls, which contributes to healthier air throughout your home.
3. Thermal Performance That Lasts
Closed-cell spray foam provides a high R-value per inch and doesn’t sag, settle, or lose its effectiveness over time. It’s perfect for Vermont’s harsh winters and humid summers, creating a stable insulation envelop that keeps your basement—and your entire home—more comfortable.
4. Adds Structural Strength
Closed-cell spray foam adds rigidity to walls, helping reinforce the foundation over time. That’s a bonus you won’t get with fiberglass or cellulose in basements.
Maximize Comfort and Savings with Basement Insulation Upgrades
Upgrading your basement insulation doesn’t just impact the basement—it improves the comfort of every room above it. Homeowners often notice warmer floors, fewer drafts, and lower energy bills right away. And with rebates and incentives available through Efficiency Vermont, there’s never been a better time to insulate.
Year-Round Installation, Even in Winter
Vermont winters are no joke, but we install insulation year-round. Our spray foam systems cure quickly and are designed to perform in cold temperatures. Whether it’s January or July, we can insulate your basement walls and improve your home’s energy performance immediately.
Start with a Free Site Evaluation
The best way to know what your basement needs? Start with a free site evaluation from the experts at Vermont Foam Insulation. We’ll assess your home’s insulation levels, identify areas of air leakage, and build a custom plan to improve comfort, reduce energy costs, and qualify for the latest rebates.
