Welcome to Foam Fellas, LLC in Portsmouth, NH
Your Trusted Portsmouth Spray Foam Insulation Contractor
If you’re a Portsmouth homeowner, you know the drill: winter winds howl off the Piscataqua River, and your heating bill goes through the roof. Summer’s no picnic either — that sticky humidity from the harbor finds its way inside, no matter how hard your AC works. Here’s the thing: most of that discomfort starts in your attic, your walls, or your crawlspace. We’re Foam Fellas, and we’ve spent years helping folks in Portsmouth fight back with insulation that actually works. Whether you’re in a historic home near Market Square or a newer build out by the Route 1 Bypass, we’ve got you covered.
- Trusted Expert Installers Serving Portsmouth
- Keep Out the Heat in Portsmouth Summers
- Reduce Utility Bills for Portsmouth Homes
- Trusted Expert Installers in Portsmouth
- Block Out the Heat in Portsmouth Summers
- Reduce Utility Bills for Portsmouth Homes
Quality Work You Can Trust in Portsmouth
Foam Fellas works closely with every client in Portsmouth to make sure expectations are met and every insulation project gets done right. Honestly, we’ve seen it all: drafty Victorian porches near Strawbery Banke, leaky basements under condos on State Street, and attics in the Pannaway Manor neighborhood that feel like freezers in February. We don’t just slap in some fiberglass and call it a day. No — we take time to walk your property, listen to what bugs you about your comfort, and recommend the right solution. That’s why Portsmouth residents keep coming back to us. And yeah, we’re based in Eliot, ME — but we cross the Memorial Bridge every day to serve this community. It’s personal for us. This is our backyard.
Lower Your Portsmouth Energy Bills
Spray foam insulation helps seal air leaks and improve efficiency, reducing heating and cooling costs for Portsmouth homeowners. That’s especially true here, where the weather swings from humid summers to bone-chilling winters. We’ve seen plenty of historic homes near Market Square that feel like they’re leaking money through every crack. Our spray foam seals those gaps tight.
Limited-Time Price Match in Portsmouth, NH
We match written quotes from qualified competitors within our service area. Contact Foam Fellas for a free estimate in Portsmouth. Yes — that includes those big-box insulation companies charging an arm and a leg. We’ll beat their price or match it. Simple as that.
Common Problems Portsmouth Homeowners & Businesses Face
Many property owners in Portsmouth struggle with insulation problems that lead to higher energy bills and uncomfortable indoor temperatures. It’s a common headache around here. You’ve got older colonials on Dearborn Street with drafty attics, and newer builds near Pease International Tradeport that just didn’t get enough spray foam. The truth is, Portsmouth’s climate is tough — heavy snow, nor’easters, and that damp Atlantic air. Without solid insulation, your HVAC system works overtime. We’ve helped folks in the Little Harbour neighborhood cut their heating costs by hundreds each winter.
If your home or building feels too hot in the summer or too cold in the winter, poor insulation is often the cause. That’s especially true in Portsmouth, where the old brick buildings on Congress Street can feel like iceboxes in January.
Common insulation issues we see in Portsmouth include:
• Drafty rooms and uneven indoor temperatures — especially in houses near South Mill Pond
• High heating and cooling costs that spike every January and July
• Moisture problems and condensation in walls or attics — common in Portsmouth’s older homes with no vapor barrier
• Poor sound insulation between rooms (ever hear your neighbor’s TV through the wall on State Street?)
• Outdated insulation materials that no longer perform effectively — that pink fiberglass from the 80s isn’t cutting it
• Ice dams during harsh New England winters — we’ve fixed plenty of those on roofs near Prescott Park
Services in Portsmouth, NH
Our Portsmouth Insulation Services
Foam Fellas offers professional insulation services designed to improve energy efficiency, protect structures, and enhance indoor comfort — all tailored to Portsmouth’s unique housing stock. Whether you’re in a Victorian on Middle Street or a cape in the outskirts near the Portsmouth Country Club, we’ve got the right solution. Our team knows the local building codes like the back of our hand. And we use materials that handle the humidity from the Piscataqua River without a problem.

Open Cell Spray Foam
Open cell spray foam insulation is a flexible, expanding foam that fills cracks, gaps, and cavities to create a continuous air barrier.

Closed Cell Spray Foam
Closed cell spray foam insulation is a dense, rigid insulation that provides superior thermal performance and structural strength.

Fiberglass Insulation
Fiberglass insulation remains one of the most widely used insulation materials for homes and buildings.

Mineral Wool
Mineral wool insulation is known for its durability, fire resistance, and excellent soundproofing qualities.

Fire-Proof Painting
Fire-proof painting adds an additional layer of protection to structures by slowing the spread of flames and heat.
Cut Energy Costs by Up to 40% in Portsmouth
Portsmouth homeowners notice immediate savings on heating and cooling after installing high-performance spray foam insulation. Just ask anyone near the North Mill Pond who switched — their January bills dropped fast.
Recover Your Investment Faster in Portsmouth, NH
Lower monthly utility bills help most Portsmouth homeowners recover the installation cost in just a few years. That's money that stays in your pocket, not the power company's.
Long-Lasting Comfort for Your Portsmouth Home
Spray foam insulation maintains its performance for decades, keeping your Portsmouth home comfortable year-round — through snowstorms and heat waves alike. It's a set-it-and-forget-it upgrade that actually works.
A Portsmouth Insulation Upgrade That Pays for Itself
Better energy efficiency, stronger air sealing, and long-term savings make spray foam insulation a smart investment for Portsmouth homeowners. Honestly, it’s one of the best things you can do for your home — especially if you’re tired of cranking the thermostat every time the wind picks up off the Atlantic. We’ve seen it make a real difference in houses all over Portsmouth, from the South End to the West End. Give us a call and let’s talk about your place.
Who We Are in Portsmouth, NH
About Foam Fellas in Portsmouth
Foam Fellas was built on a simple idea: provide dependable insulation solutions that help homeowners and businesses in Portsmouth improve energy efficiency, comfort, and building performance.
Our team understands how important proper insulation is in Portsmouth, especially when you’re driving down Islington Street and watching the fog roll in off the Piscataqua River. Long winters, biting cold, and rising energy costs make effective insulation one of the smartest investments a property owner can make.
We take pride in delivering honest recommendations and professional installation for every project here in Portsmouth. Whether it’s spray foam insulation for a new build near the South End, upgrading insulation in a historic home off Middle Street, or adding fire-resistant coatings to protect a commercial structure on Market Square, our focus is always on quality workmanship and long-term results.
- That’s why every project we complete in Portsmouth is designed to deliver real, measurable benefits for our customers.
What Sets Us Apart in Portsmouth
Why Portsmouth Property Owners Choose Foam Fellas
Choosing the right insulation contractor in Portsmouth is important for both performance and long-term energy savings. Foam Fellas focuses on delivering dependable workmanship, proven insulation solutions, and honest service for every project.
Local Knowledge of Portsmouth & New England Climate
We understand how harsh winters, humidity, and those wild seasonal temperature swings affect homes across Portsmouth — from the neighborhood near Peirce Island to the homes along Woodbury Avenue.
Professional Installation in Portsmouth, NH
Proper insulation installation is critical in Portsmouth, especially for older homes in the Historic District that can be drafty year-round. Our team ensures every project is installed correctly for maximum performance.
Energy Efficiency Focus for Portsmouth Homes
Our insulation systems help reduce heating and cooling costs for Portsmouth homeowners, making those chilly February mornings a bit more bearable.
Long-Lasting Materials for Portsmouth Properties
We use high-quality insulation products designed to perform reliably for many years, even in Portsmouth's coastal climate.
Residential & Commercial Experience in Portsmouth
From homes near Prescott Park to commercial buildings on Congress Street, we provide insulation solutions tailored to each Portsmouth property.
Testimonials from Portsmouth Homeowners
What Portsmouth Homeowners Are Saying About Foam Fellas
“Foam Fellas did an outstanding job insulating our attic in the outskirts of Portsmouth. The team was professional, efficient, and explained everything clearly. Our home feels warmer and our heating bills have already started to drop.”
“We hired Foam Fellas for closed cell spray foam in our basement in Portsmouth and couldn’t be happier. The crew arrived on time, worked cleanly, and delivered exactly what they promised — no mess, no fuss.”
“After Foam Fellas installed insulation in our Portsmouth home off Middle Road, the difference was immediate. No more drafts near the windows, and the temperature stays consistent throughout the house — even during those wild winter nor’easters.”
Spray Polyurethane Foam in Portsmouth, NH
Improves Efficiency, Building Strength and Creates a Protective Vapor Barrier.
- Spray foam insulates structures and acts as a sealant by providing an effective barrier against unwanted air and water leaks. It will bring you unmatched value reinforcing the structure, strength and durability of your home. In Portsmouth, where old brick buildings meet newer coastal construction, that vapor barrier is a lifesaver — especially when spring rains hit the Seacoast.
State of the Art Equipment Used in Portsmouth
We offer closed spray foam insulation. Powered by Graco E-30 Reactor, our state of the art equipment will provide you with efficient, quality and reliable insulation service you expect. Whether you're in a historic home on State Street or a newer build out near Pease International Tradeport, we've got the right setup for Portsmouth's unique architecture.
Portsmouth Projects
See Our Portsmouth Work in Action
Our gallery highlights real installations across Portsmouth — from spray foam applications in downtown condos to finished insulation systems in homes near Prescott Park that improve energy efficiency and comfort. We take pride in showing our work.
Service Area Around Portsmouth
Service Areas We Proudly Serve Near Portsmouth, NH
Foam Fellas provides professional spray foam insulation services across Maine, New Hampshire, and Massachusetts, with a strong focus on the Seacoast region. Based in Eliot, ME, we proudly serve homeowners and businesses in Portsmouth, NH — including Islington Creek, the South End, Atlantic Heights, and neighborhoods near Little Harbour School. We’ve also insulated homes along the Piscataqua River and in the historic downtown district.
If you’re located in Portsmouth or any nearby community like Greenland, Rye, or Newington, Foam Fellas is ready to help improve your home or building with professional insulation solutions designed for New England’s climate. Contact us today to schedule your free estimate in Portsmouth. We’ll drive right over from Eliot — it’s a quick trip across the bridge.
Get Started in Portsmouth, NH
Get a Free Insulation Estimate in Portsmouth
Improve your home’s comfort and energy efficiency with professional insulation from Foam Fellas. Whether you’re battling drafts near Market Square or trying to keep your third-floor condo cool in July, we’ve got the right solution for Portsmouth.