Spray Foam Insulation in Baltimore, MD

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

Compare 9 verified spray foam insulation contractors serving Baltimore, Maryland, backed by 454 customer reviews averaging 4.3★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Baltimore 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 Baltimore

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 Baltimore

5
7 Google reviews

Recent Reviews:

Brad Helm Jr★★★★★5 years ago

Foam Insealators/Devere Insulation has been amazing. They kept us in the loop the entire way. Their employees were punctual, clean, polite and worked very fast. When they were done, they cleaned up every little speck of dust they made and left the job spotless. I would absolutely recommend them. Not to mention less than 2 hours after they left the second story of my house was noticeably cooler.

Merrick DesignBuild★★★★★a year ago

We have worked with Foam InSEALators as our primary insulator for over a decade. Their rep Carl is knowledge, friendly and always will to take the time to work with our clients to find the right solution for their home. They are easy to schedule and always deliver as expected.

Patricia Goins★★★★★6 months ago

Incredible service from start to finish! Professional, punctual, and the quality of the foam insulation exceeded all expectations. House feels like new—energy efficient and super quiet. Highly recommend this team! GREAT TEAM MAKES THE DREAM WORK!!!!!!

Recent Reviews:

Pavlov Escobar★★★★★8 months ago

I needed to replace the roof on my detached garage and Baltimore Roofing Contractors was the the only company that came out and had cost effective options. Technician explained the differences between their good, better, and best range of underlayments/shingles allowing me to select what best suited my garage and budget. The crew was careful on site and did a great job with cleanup. I would highly recommend. What a great company! Detail oriented, friendly, punctual, and properly priced

Leonard Karen★★★★★9 months ago

Baltimore Roofing Contractors was an absolute pleasure to work with, very kind and professional. Our house looks amazing especially the roof and the back porch. Very professional. Super knowledgeable. Prices for any budget.

Olivia Ahearn★★★★★9 months ago

They always do a clean and outstanding job, their prices are very reasonable, and they always do what they say they will do and even go above and beyond that. Great work - plan to use them again

5
13 Google reviews

Recent Reviews:

John Smoth★★★★★6 months ago

Great workers

James Wright★★★★★6 months ago

Very professional

Timothy Evans★★★★★5 months ago

4.9
319 Google reviews

Recent Reviews:

Zerihun Diriba★★★★★a week ago

Koala did a very good job with my attic insulation. They arrived on time and explained what they were doing. I was also impressed by the quality of their work. Their price was very reasonable. Overall, they were very professional. I highly recommend Koala.

Andy Shilling★★★★★a week ago

Jasper was very informative and explained insulation and the process very well. He was honest with what he thought would be best and didn’t try to oversell. The work was completed as promised. It was a great experience and I would use koala again.

Sharice Cook★★★★★a week ago

This experience with Koala Insulation was great from start to finish! From scheduling the appt to the initial consultation. Jasper was sent out to discuss the attic remediation I was in need of. I was quoted an insane amount from a pest control company and was looking for a realistic and affordable option. Jasper was nothing short of amazing! Explaining the process and helped me get the best solutions for the best cost. The energy assessment that’s part of the job and provides rebates was so helpful. The install lived up to the same great experience. The installers were professional, knowledgeable, and let me know what they were doing. They cleaned up very well after the work was complete. I wish I got their names so I could call them out personally. Great work fellas! I never thought insulation could be such a great experience but then I met the great people at Koala. Highly recommend!

4.1
82 Google reviews

Recent Reviews:

Allison Fosbenner★★★★★4 months ago

I highly recommend DeVere Insulation!! We were connected with them through our Greenworks Energy Audit, and they came out to insulate both of our attics. We live in an older home, and the attics hadn’t been touched in years- this was definitely not an easy job, especially in the record-breaking heat of the summer. Jesus and his team were absolutely AMAZING. They were hardworking, respectful of our home, and incredibly meticulous. They found and addressed several issues we weren’t aware of, going above and beyond what we expected. We will be having them back soon to encapsulate our crawl space! We highly recommend them for your insulation needs!

Frank Hart★★★★★2 years ago

DeVere was recommended but I attempted to deal with two other companies for my attic/roof spray foam repair job. I was crazy to even think of dealing with others. One spray foam company wanted a dozen pictures and other details and then estimated the spray foam job over the phone at double what DeVere did for a full in person estimate. That other company never returned my messages after giving me the I don’t want that job price estimate. One other company took so long to give me an estimate that DeVere had already done the estimate and job before they could get out to provide an estimate. DeVere’s whole team is very professional, good timely estimate, quality spray foam job, great prep and clean up. I couldn’t ask for a better experience. I can now install my fiberglass insulation and drywall in my garage after my roof repairs. Thank you so much team DeVere

Gen Li★★★★★a year ago

I want to say how awesome DeVere's service was. I was scheduled quickly, and the foam was applied methodically and correctly in layers. Not only that, but I paid to entirely fill my stud and rafter bays, and it's required because of the way foam is applied to have a small air gap that isn't filled, since you can't make foam totally flat. DeVere went above and beyond, actually slightly over filling certain areas so that NO area was below what I had paid for. They taped off beautifully and cleaned up wonderfully. I would give them 6 stars if I could. Here is a photo of just one small area, showing how they cut off the excess, but they also did an entire large room.

3.5
13 Google reviews

Recent Reviews:

Shaela Jones★★★★★a year ago

These guys did an excellent job insulating the attic space of a townhouse we were remodeling. We had a wide range of ceiling depths, and Gerald helped us figure out the best combination of batt and foam insulation to meet code without overspending. They also did the cleanest work of any sub on our whole remodel, and the inspector even commented what a good job they did with the foam installation.

Ethan Lang★★★★★7 months ago

Gerald and the crew were absolutely wonderful to work with, gave me a fair and honest opinion and estimate. They got to me quickly and completed the work quickly and painlessly with no mess or issues and the end result looks great and hopefully saves on energy cost.

Joyce Park★★★★★3 years ago

I highly recommend Pyramid Insulation for your insulation needs around Baltimore! Our house is a 1950s Cape Cod that is a little more difficult to insulate than your typical house. But it was clear that the team has had a lot of experience doing this kind of work. Their quote was cheaper than another company I consulted, had a more thorough plan, and was able to squeeze us into our schedule due to our baby’s due date coming up! It was supposed to be a one day job, but they were going to require an extra day of work to complete it thoroughly. I’m so glad they were able to finish the job the next day, because today the outside temperature went down to the 40s and our house is still 70 degrees without the heat on yet! It made a total difference!

3.5
11 Google reviews

Recent Reviews:

Ralph Smith★★★★★8 years ago

My company does additions and renovations in Montgomery and Prince Georges County. Cameron has insulated three projects over the last year. Their work is thorough, neat and complete. The installation crews are pleasant and efficient; they clean up after themselves. Additionally, their sales and support staff is responsive and very easy to deal with. Their prices are fair. I have worked with several other insulation companies over the years and I consider Cameron to be among the best. I would recommend them to any firm or homeowner looking for a quality job at a fair price.

Victor Moya★★★★★2 years ago

good company

Carolina Restrepo Mesa★★★★★12 months ago

Direct: (321) 204-1153

3
2 Google reviews

Recent Reviews:

Thomas Aloisi★★★★★5 years ago

Its adorable!

Survey Says5 years ago

Not sure this is a real business or just someone trying to scam people.

Direct: (203) 806-7766

Frequently Asked Questions — Spray Foam Insulation in Baltimore

These are the questions Baltimore 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 9 verified Baltimore contractors above for exact quotes.

Is spray foam insulation a good investment in Baltimore?
For homes in mixed-humid climates like Baltimore, 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 Baltimore?
In mixed-humid climates like Baltimore, 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 Baltimore, MD?
In Baltimore, 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 Baltimore costs $2,000–$6,000. Most Baltimore 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 Baltimore, MD?
When searching for a spray foam contractor in Baltimore, 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 Baltimore 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 Baltimore 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.