Spray Foam:
Insulation That Seals the Deal
Spray foam insulation seals every crack —locking in comfort, blocking out drafts, and delivering serious energy savings.
The Benefits of Spray Foam—Beyond Just Insulation
The benefits of using spray foam insulation.
Superior R-Value
Spray foam delivers one of the highest R-values per inch, giving you serious insulating power in tight spaces.
Built-In Air Sealing
Unlike other insulation types, spray foam seals cracks and gaps as it expands—locking out drafts, dust, and even pests.
Moisture Barrier
Closed-cell spray foam acts as a moisture barrier, helping to prevent mold and rot in basements, crawlspaces, and damp areas.
Energy Efficiency Hero
Because it insulates and air seals, spray foam reduces heating and cooling costs more effectively than traditional options.
Long Lifespan
Spray foam doesn’t settle, sag, or degrade over time—meaning your insulation investment keeps working for decades.
Strengthens Your Structure
Closed-cell spray foam adds rigidity to walls and roofs, which can boost your home’s structural integrity in the long haul.
Pest Deterrent
Spray foam fills every nook and cranny, leaving no cozy gaps for rodents or insects to move in—making it a powerful line of defense against unwanted houseguests.
When to Choose Spray Foam Insulation?
Here are common scenarios when spray foam is the right insulation choice for you.
You’re Dealing with Drafts or Air Leaks
If your home feels breezy in winter or your A/C can’t keep up in summer, spray foam is your fix. It seals as it insulates—no more guessing where the air is leaking out (or in).
You’ve Got a Crawlspace or Basement That Smells Musty
Spray foam doesn’t just insulate—it creates a moisture barrier. That makes it ideal for areas prone to dampness, mold, or condensation issues. Bonus: it keeps critters from sneaking in, too.
You’re Renovating and Want Long-Term Energy Savings
Whether you’re redoing walls or finishing a garage, spray foam gives you higher R-value and airtight performance in one step. That means lower energy bills for decades—with no sagging, settling, or touch-ups.
You Want to Boost Comfort and Structure
Closed-cell spray foam adds stiffness to your walls and roof sheathing. If you want insulation that pulls double-duty—keeping temps stable and reinforcing your home—this is it.
You’re Tight on Space but Need High Performance
When wall or roof cavity space is limited—like in older homes or cathedral ceilings—spray foam gives you max R-value per inch. It’s the go-to when you need serious insulation without sacrificing square footage.
The Nealon Difference
Where Historic Charm Meets Modern Efficiency – Without Compromise
Older Home Specialists
As EPA Lead-Safe certified contractors, we understand the unique challenges of insulating historic New England homes.
Proven Energy Savings
Our customers typically see a 30% reduction in energy costs after our professional insulation services. Your investment often pays for itself through years of lower utility bills.
Professional Energy Assessment Process
Every project begins with a thorough energy assessment to identify your home's specific needs.
Frequently Asked Questions?
Is spray foam insulation safe?
Yes, spray foam insulation is safe after it cures, typically within 24 hours. During installation, it releases chemicals that may irritate eyes, lungs, or skin. Proper ventilation and professional application ensure safety. Once cured, it is inert and poses minimal health risks.
How long does spray foam insulation last?
Spray foam insulation can last up to 80 years with proper installation and maintenance. Closed-cell foam lasts longer than open-cell due to its dense, water-resistant structure. Lifespan varies based on climate, moisture levels, and installation quality.
Where is spray foam insulation best used?
Spray foam insulation is best used in attics, walls, basements, and crawl spaces. It seals gaps, stops air leaks, and boosts energy efficiency. Spray foam performs especially well in hard-to-reach areas where other insulation types may fall short.
Does spray foam help with soundproofing?
Yes, spray foam insulation helps with soundproofing by reducing airborne noise. Open-cell foam is more effective than closed-cell because its spongy texture absorbs sound waves. While not a complete solution, it noticeably reduces noise between rooms and floors.
Can spray foam insulation get wet?
Closed-cell spray foam insulation can get wet and still perform, as it resists water. Open-cell foam absorbs moisture and may degrade with prolonged exposure. Proper installation and moisture control help prevent mold and maintain effectiveness.
Is spray foam better than fiberglass or cellulose?
Spray foam insulation is better than fiberglass or cellulose for energy efficiency and air sealing. It expands to fill gaps, offers higher R-values, and resists moisture. While more expensive, it provides superior performance, especially in closed-cell form. Fiberglass and cellulose are more affordable but less effective at sealing.
Can spray foam be installed over old insulation?
Yes, spray foam can be installed over old insulation if the existing material is dry, stable, and mold-free. For best performance, removing old insulation is recommended to improve adhesion, coverage, and energy efficiency.
Does spray foam insulation smell?
Yes, spray foam insulation can smell during installation due to chemical off-gassing. The odor usually fades within 24 to 72 hours after curing. Proper ventilation helps minimize exposure and clears the smell faster.
Reviews from our customers over 48 years
Great experience! Very friendly and professional. They were on time, stuck to their quote and work timeline and have done a great job with two projects for me. I would definitely recommend.
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