Spray Foam Insulation in Saint John, NB
Bay of Fundy Protection for Your Saint John Home
Saint John's historic Uptown, east side neighborhoods, and west side communities face the full force of Bay of Fundy weather. Our spray foam insulation is built for port city conditions.
Flexible Financing Available
Learn more about our financing options →
25,000+ Homes Insulated
Satisfaction Guaranteed
Red Seal CertifiedWhy Does Saint John Need Spray Foam Insulation?
Spray foam insulation seals air leaks and provides the highest R-value per inch, reducing heating costs by 30 to 50% in cold Canadian climates.
Saint John's position on the Bay of Fundy brings unique climate challenges including extreme tidal weather patterns, salt air exposure, and rapid temperature changes. The city's significant inventory of heritage and industrial-era housing requires insulation that performs in harsh, moisture-laden conditions. Spray foam excels in these demanding environments.
Saint John's Insulation Challenges
Bay of Fundy tidal weather creates rapid temperature and humidity changes that stress building materials
Uptown Saint John's historic row houses have virtually no insulation in shared party walls
Salt air from the Bay of Fundy accelerates corrosion of building components and fasteners
Industrial port location means many neighbourhoods have older housing stock from the early 1900s
How Spray Foam Helps
Spray foam adapts to the irregular cavities found in Saint John's century-old row houses
Closed-cell foam resists Bay of Fundy salt air degradation better than any other insulation
Seamless air barrier stops Fundy wind-driven cold infiltration through walls and rim joists
Insulation upgrades reduce NB Power costs and help Saint John homeowners access rebate programs
Winter Temperature
-9°C to -18°C
Climate Zone
Zone 6
Recommended R-Value
R-60 attic, R-24 walls
What Type of Spray Foam is Right for Your Saint John Home?
Open-cell foam (R-3.7/inch) is ideal for interior walls and soundproofing, while closed-cell foam (R-6.5/inch) provides a moisture barrier for basements and exteriors.
Saint John's Zone 6 climate and bay of fundy tidal moisture and fog create extreme humidity conditions that penetrate building envelopes conditions inform our recommendation for the right spray foam type.
Open-Cell Spray Foam
R-3.7 per inch
- Excellent soundproofing properties for interior walls
- More flexible—ideal for areas with movement or settling
- Allows moisture to pass through (breathable)
- Cost-effective for large interior applications
- Perfect for interior walls, attics (with vapor retarder), and floors
Best for Saint John: Interior partition walls, soundproofing between rooms, and attic applications where a separate vapor barrier is installed.
Closed-Cell Spray Foam
R-6.5+ per inch
- Highest R-value per inch of any insulation material — ideal cold climate insulation
- Acts as its own vapor and moisture barrier
- Adds structural rigidity to walls and rooflines
- Resists water, mold, and moisture infiltration
- Ideal for exterior walls, basements, crawl spaces, and rim joists
Best for Saint John: Exterior walls, basements, and any area where moisture is a concern. Provides the R-value needed for your climate zone.
Why Choose Greenfoot for Spray Foam in Saint John?
Greenfoot has insulated thousands of homes across 5 provinces — certified spray foam technicians, manufacturer-backed warranties, and deep experience with local climate conditions.
Spray Foam Specialists in Saint John
Our Saint John technicians specialize in residential and commercial spray foam applications. We've insulated 25,000+ homes across New Brunswick, understanding the unique thermal demands of NB's climate.
Certified Installation Experts
Factory-certified for open-cell and closed-cell spray foam systems. Our manufacturer certifications ensure your insulation performs optimally and meets New Brunswick's building code requirements.
Complete Home Coverage in Saint John
Whether you need attic insulation, wall cavities, or basement rim joists sealed, we design custom home comfort solutions for Saint John homes. Our thermal assessments ensure proper R-value for maximum energy efficiency and energy cost reduction.
NB Rebate & Insulation Financing Options
We help Saint John homeowners access federal and New Brunswick provincial rebates for eco-friendly insulation upgrades. Flexible insulation financing options available—conditions apply.
What Should You Expect During a Spray Foam Estimate & Installation?
Most spray foam insulation projects take 1 to 2 days, starting with a free home assessment and ending with a thermal imaging verification.
STEP 01
Free Insulation Assessment
Our certified Home Comfort Advisor visits your property to conduct a comprehensive free insulation assessment and spray foam evaluation at no cost:
- •Measure all areas requiring spray foam application
- •Assess your home's current insulation performance
- •Identify air leakage points and evaluate thermal bridging issues
- •Determine the precise amount of spray foam insulation needed for maximum energy efficiency
- •Provide a detailed written quote with specs and pricing
COST: Free, no obligation
Timeline: 3-5 Business days
STEP 02
Efficient Project Coordination
Following your spray foam insulation assessment, our team coordinates your installation timeline:
- •Scheduling based on your home's specific insulation needs
- •Clear communication about project duration
- •Weather considerations for optimal spray foam application
- •Any special preparation requirements explained in detail
Timeline: Scheduled within 1-2 weeks
STEP 03
Expert Insulation Application
Our experienced Greenfoot spray foam installation team arrives with professional-grade equipment:
- •Surface preparation and protective masking
- •Precise spray foam application by certified technicians
- •Complete air sealing and thermal barrier creation
- •Quality control testing throughout the process
- •Highest safety standards maintained during installation
Single area: 4-8 hours
Multiple areas: 1-2 days
STEP 04
Project Completion Confirmation
Once your spray foam insulation installation is complete, our technician contacts you directly:
- •Confirm project completion and review work performed
- •Provide post-installation safety guidelines
- •Ensure all areas have been properly insulated and sealed
- •Important timing information for safe re-entry to your newly insulated home
Timeline: Same day notification
STEP 05
Essential Safety & Preparation Guidelines
For optimal indoor air quality and your safety, please follow these requirements:
- •Be present upon our team's arrival for a pre-installation walkthrough
- •Ensure a minimum of 4 feet clearance from all exterior walls
- •Remove any objects leaning against or placed along exterior walls
- •Stay away from your home for a full 24 hours following spray foam application
- •You can safely return the following morning between 8:00 AM and 10:00 AM
What Do Saint John Homeowners Ask About Spray Foam Insulation?
Expert answers to the most common spray foam questions — covering costs, R-values, health safety, and rebate eligibility.
What R-value does my Saint John home need for spray foam insulation?
Is open-cell or closed-cell spray foam better for Saint John's climate?
How much can I save on NB Power bills with spray foam insulation in Saint John?
How does spray foam prevent mold and moisture damage in Saint John?
How long should I stay out of my Saint John home after spray foam installation?
What rebates are available for spray foam insulation in Saint John, New Brunswick?
WHAT ARE PEOPLE SAYING ABOUT GREENFOOT?
Our 5-star reviews speak for themselves!
"FIXED A LONG STANDING ISSUE I HAD FROM POOR INSTALLATION BY ANOTHER COMPANY!"
The two technicians Tanner and Halim were excellent, did a great job, very tidy, and identified 2 problems with my heat pump head, and fixed a long standing issue I had from poor installation by another company! Thank you very much, looking forward to using Greenfoot again.
Frederick TOFFLEMIRE - 5 Star Review
"I ONLY WISH THEY INSTALLED OUR HEAT PUMP ORIGINALLY"
Great company to deal with. We hired them to move an existing heat pump after the original installer refused to help us. The estimator and the installer were both very polite, careful and thorough. I only wish they installed our heat pump originally. I would hire them again without hesitation.
Ellen DOWNEY - 5 Star Review
"WHEN THEY LEFT THE HOUSE THERE WAS NO MESS TO CLEAN UP!"
The young chaps, Marlon Marcuflo and Sylvia Richard, were wonderful to deal with. They were extremely polite, very tidy and efficient in their work, were right on schedule and did an excellent job. When they left the house there was no mess to clean up. I would recommend Greenfoot Energy Solutions to anyone thinking of upgrading their home.
Alice GRACIE - 5 Star Review
"THEIR ENTIRE TEAM IS EXTREMELY EXPERIENCED, KNOWLEDGEABLE, AND CONSIDERATE"
We hired Greenfoot to install 2 heat pumps. From the beginning to end - initial home visit to the final installation touches - they were wonderful to work with. Their entire team is extremely experienced, knowledgeable, and considerate; and were very accommodating.
Michael BOYD - 5 Star Review
"OUR OLD HOUSE FEELS LIKE A BRAND NEW CONSTRUCTION"
The Greenfoot Team did amazing work in our home. Our old house (built in 1959) feels like a brand new construction thanks to the ductless heat pumps, spray foam insulation and HVAC installed by the friendliest staff! Everyone we spoke to from Greenfoot was helpful and just seemed genuinely happy in their job.
Happy Homeowner - 5 Star Review
"FIXED A LONG STANDING ISSUE I HAD FROM POOR INSTALLATION BY ANOTHER COMPANY!"
The two technicians Tanner and Halim were excellent, did a great job, very tidy, and identified 2 problems with my heat pump head, and fixed a long standing issue I had from poor installation by another company! Thank you very much, looking forward to using Greenfoot again.
Frederick TOFFLEMIRE - 5 Star Review
"I ONLY WISH THEY INSTALLED OUR HEAT PUMP ORIGINALLY"
Great company to deal with. We hired them to move an existing heat pump after the original installer refused to help us. The estimator and the installer were both very polite, careful and thorough. I only wish they installed our heat pump originally. I would hire them again without hesitation.
Ellen DOWNEY - 5 Star Review
"WHEN THEY LEFT THE HOUSE THERE WAS NO MESS TO CLEAN UP!"
The young chaps, Marlon Marcuflo and Sylvia Richard, were wonderful to deal with. They were extremely polite, very tidy and efficient in their work, were right on schedule and did an excellent job. When they left the house there was no mess to clean up. I would recommend Greenfoot Energy Solutions to anyone thinking of upgrading their home.
Alice GRACIE - 5 Star Review
"THEIR ENTIRE TEAM IS EXTREMELY EXPERIENCED, KNOWLEDGEABLE, AND CONSIDERATE"
We hired Greenfoot to install 2 heat pumps. From the beginning to end - initial home visit to the final installation touches - they were wonderful to work with. Their entire team is extremely experienced, knowledgeable, and considerate; and were very accommodating.
Michael BOYD - 5 Star Review
"OUR OLD HOUSE FEELS LIKE A BRAND NEW CONSTRUCTION"
The Greenfoot Team did amazing work in our home. Our old house (built in 1959) feels like a brand new construction thanks to the ductless heat pumps, spray foam insulation and HVAC installed by the friendliest staff! Everyone we spoke to from Greenfoot was helpful and just seemed genuinely happy in their job.
Happy Homeowner - 5 Star Review
What Other Services Are Available in Saint John?
Explore our full range of energy efficiency solutions for Saint John homeowners
Ready to Improve Your Saint John Home's Insulation?
Join thousands of satisfied homeowners across New Brunswick. Schedule your free spray foam insulation assessment in Saint John today.
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Which Spray Foam Is Right for Your Saint John Home?
There are two types of spray foam insulation — and the right choice depends on where it's being installed and the specific moisture challenges in Saint John. Here's what our local installers recommend.
Closed-Cell Spray Foam
Saint John's freeze-thaw cycles, coastal humidity, and Atlantic winters make closed-cell foam the preferred choice for most exterior applications. It acts as a combined insulator and vapour barrier — critical in Maritime climates where moisture in wall cavities leads to mould and rot.
- ✓ R-6 to R-6.5 per inch — highest R-value available
- ✓ Acts as a built-in vapour barrier — no separate poly required
- ✓ Adds structural rigidity to wall assemblies and rim joists
- ✓ Impervious to water — won't sag, settle, or absorb moisture over time
Open-Cell Spray Foam
Open-cell foam works well for interior walls, interior attic slopes, and any area in your Saint John home where air sealing matters more than vapour control. It's also the better choice for soundproofing between rooms.
- ✓ R-3.5 to R-4 per inch — excellent air sealing at lower cost
- ✓ Superior soundproofing between rooms and floors
- ✓ More affordable per board foot — suited for large interior areas
- ⚠ Not suitable for below-grade or exterior applications in Saint John
Not sure which type your Saint John home needs?
Our free home assessment determines the right foam type, thickness, and application areas — and we'll identify any provincial insulation rebates of up to $5,500 you qualify for. See available rebates →