Spray Foam Insulation in Dundalk, MD

Find top-rated spray foam contractors and save up to 33% on energy bills

Compare 2 verified spray foam insulation contractors serving Dundalk, Maryland, backed by 24 customer reviews averaging 4.5★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Dundalk contractors handle both open-cell and closed-cell spray foam. Homeowners here typically cut energy bills by around 33% — get free quotes and read verified reviews below.

💰 Estimated Energy Savings in Dundalk

33%
Average Energy Savings
Typical range: 28% - 38%
$1,426
Estimated Annual Savings
Based on $360/month average energy cost
5 years
Average Payback Period
Return on investment timeline

Note: Actual savings vary based on home size, current insulation, energy rates, and climate conditions. These estimates are based on Department of Energy data for Mixed-Humid.

Verified Contractors in Dundalk

5
4 Google reviews

Recent Reviews:

Gina Welzel★★★★★6 years ago

Good people, and hard workers. Friendly staff.

Larkin Birmingham★★★★★3 years ago

They are good comany work for in to let them do yiu jobs in insulation

Jeff L★★★★★a year ago

4
20 Google reviews

Recent Reviews:

Kimberly and Matt (K&M)★★★★★6 months ago

Excellent commercial building insulation and air barrier services. The project estimating and management teams are very responsive and knowledgeable.

Sparky Smitty★★★★★a week ago

Summit Insulation's Spray Foam Insulation I'm the original owner of my Ryland home Crofton, which was built during fall of 1992 and completed January 1993. I was the first home owner on Patrice Circle in my Crofton Woods neighborhood. I have the McHenry model, with a Victorian style facade. Grey Aluminum siding, with navy blue shutters and door, and white trim. Over the years, the traffic and noise volume has only increased on Rt 3/301. Although up to code insulation wise when built, and with replacement windows and new exterior doors already installed, I still could not escape the growing traffic and neighborhood noise. My MHIC Geremias Gomez had jokingly said to me - "Welcome to the mobile home park". I burst out laughing and replied, you're absolutely right! I then began the search to find an insulation contractor who would spray in expanding foam insulation to fill the space between the exterior siding and the interior sheet rock walls. Baltimore based Summit is the only remaining company that provides this type of insulation service. So I contacted them, and Tom Ragsdale came out, gave me the estimate and I quickly signed the contract. The work was performed yesterday, and all day event from 7:30 am to 5:30 pm. Chris and his all Latino team of seven men were wonderful to work with. Very respectful of me and the interior of my house. The exterior of my house, grey aluminum siding, now looks cleaner and brighter than it did before they began their spray foam insulation process. I can already tell the difference in noise reduction, and it's been less than 24 hours since they finished their job! Finally I'm very grateful for the caring manner with which my Latino crew treated me. They knew I had my right hip replacement surgery less than 30 days ago. They were so careful to make sure I didn't accidentally stumble and fall, extending me an arm to grab if needed. In short, they treated me as they would want their Abuela to be treated. Muchas gracias mi Amigos! Melanie Smith

Neonetics Neon★★★★★8 years ago

Just had my entire house insulated. It's a 25 year old house, but we would get drafts, and our electric bills were sky high. Had an OUTSTANDING experience with everyone from Joe the estimator, to Chris the crew supervisor, as well as Dan the owner. Everyone was courteous, professional, and extremely hard working. My house was a 2 day job, and it rained on the first day, but apparently that doesn't stop these guys at all! The entire 4 man crew kept working through the rain, and came back the next day to complete the job in it's entirety. I was able to see and hear the insulation being pumped into my walls, and it's still only the first day since the completion, but the sound difference is immediate. I already live in a quiet neighborhood, but now you can hear a pin drop. I didn't even know that sound reduction was a benefit, but if that's what you're looking for, this stuff really works! Time will tell if my heating and air conditioning bills improve, but I can say that I already feel cozier as the weather is finally turning cold. I highly recommend Summit insulation, and taking the time to compose this review is proof enough, as I rarely write reviews at all :)

Frequently Asked Questions — Spray Foam Insulation in Dundalk

These are the questions Dundalk homeowners ask most about spray foam cost, R-value, and open- vs. closed-cell foam — with context for local pricing and roughly 33% typical energy savings. Compare the 2 verified Dundalk contractors above for exact quotes.

Is spray foam insulation a good investment in Dundalk?
For homes in mixed-humid climates like Dundalk, MD, spray foam is typically an excellent investment. The combination of hot summers, cold winters, and significant humidity means your home faces insulation challenges year-round. Spray foam addresses all three — providing thermal insulation in both seasons while controlling moisture infiltration. Most homeowners in MD see payback periods of 4–7 years. As with any tight building envelope, ensure your home has adequate mechanical ventilation to manage interior moisture.
How does humidity affect spray foam insulation performance in Dundalk?
In mixed-humid climates like Dundalk, MD, moisture management is as important as thermal performance. Closed-cell spray foam acts as a Class II vapor retarder, preventing moisture from infiltrating walls and attics where it causes mold and structural damage. This dual function — insulation plus moisture control — is why spray foam outperforms traditional insulation options in MD's climate. However, because the building envelope becomes tightly sealed, proper mechanical ventilation is strongly recommended to allow interior moisture from daily activities to escape without losing conditioned air.
Is spray foam insulation worth the cost?
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost in Dundalk, MD?
In Dundalk, MD and the surrounding area, spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your home's specifics. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic in Dundalk costs $2,000–$6,000. Most Dundalk homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor in Dundalk, MD?
When searching for a spray foam contractor in Dundalk, MD, look for ones who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified Dundalk contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors in Dundalk for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.