Spray Foam Insulation in San Francisco, CA

Find top-rated spray foam contractors and save up to 27% on energy bills

💰 Estimated Energy Savings in San Francisco

27%
Average Energy Savings
Typical range: 22% - 32%
$1,134
Estimated Annual Savings
Based on $350/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 Hot-Dry.

Verified Contractors in San Francisco

Vortex Insulation

Direct: 5109635713

5
7 Google reviews

Recent Reviews:

Astounding Construction Inc★★★★★a year ago

As a contractor you're always looking for the best supplier of insulation, someone who can provide you with competitive prices, hardwood and quality. Vortex insulation is the best option! Their office manager Mike made everything so easy and the owner Luis and his team installed it all right away and perfect. These guys are the best insulation company in the whole Bay Area!

Lucy Finn★★★★★3 months ago

These guys are the best! Extremely quick service and a true dedication to their customers. I had a complicated request about exposed beams and they worked nights and weekends to make my vision come to life and stick to their original date. Would recommend them 5,000%. Great value, great quality, great service!

Carolina Pantoja★★★★★5 months ago

We hired Vortex for a ceiling and wall insulation. The service provided by Vortex was excellent, fast and their employees were very respectful and professional. Price was very reasonable. We recommend this company for any insulation needs. Overall experience was good. Customer service at all levels was excellent. We give this company 10 plus stars.

The Bay Area Insulation

Direct: 6505803391

5
9 Google reviews

Recent Reviews:

henry c★★★★★5 months ago

Mike came to my house took measure and next day he and his crew started the job; hard workers they did a great job

Eric Iturribarria★★★★★9 months ago

As a general contractor, I would highly recommend The Bay Area Insulation. Miguel and his team are reliable, respectful and work well with my team. I would highly recommend them.

Steve Johnson★★★★★7 months ago

I had an insulation company all lined up to reinstall new insulation in my attic. I even paid them in full, and in advance. Four days before the job, I got a text saying they were going to bail out, and they did. Enter The Bay Area Insulation, and Miguel Vilchez. I contacted Miguel on a Saturday morning around 8:30 am "out of the blue", and explained my situation. He was at my place in Redwood Shores within 90 minutes to talk and do a site inspection. A few hours later, I received a quote, competitive, and immediately gave them the job. Monday morning, the original day of the aborted install, Miguel was picking up the special insulation I wanted, and by 1:30 pm he had a crew onsite and began the project. At 7:00 pm they finished, and the job was even better than I had asked for -- and I'm an anal engineer! The bottom line is that I wholeheartedly recommend Bay Area Insulation and Miguel Vilchez for an insulation project. I even immediately gave his business card to my favorite "big-time" contractor, and said, "You've got to use this guy."

Juniper Insulation

Direct: 4156346245

5
31 Google reviews

Recent Reviews:

Christopher Widener★★★★★7 months ago

Very friendly and courtesy. Response time is amazing! Quality and sincere professionalism.

Rachel Gordon★★★★★a year ago

Great company! Helped us out when my grandpa needed work done on one of our rentals that's far away from us.

Michael K★★★★★4 months ago

Great company

Insulation Solutions

Direct: 8885324726

5
9 Google reviews

Recent Reviews:

Douglas Smuckler★★★★★11 months ago

We engaged Insulation Solutions based on the positive reviews we had seen earlier, and weren't disappointed. Gabriel (General Manager) came to our home and helped us determine the most effective solution for the money which was to install insulation in our ceiling and below our house. The quote we received was quite reasonable and better than others we'd seen. His team came out on the day we planned and completed the installation that same day, including cleaning thoroughly after they were done. Gabriel kept in touch during the installation to make sure everything was on track. The house feels warmer, the heater doesn't run as often as in the past, and our energy bills have declined. Highly recommended.

Ken Pritchard★★★★★3 months ago

Insulation Solutions arrived on time, accompanied by three professional, courteous, and attentive workers who genuinely cared about my satisfaction. They meticulously taped off my garage and left the area in pristine condition, as if they had never been there. The service was exceptional, and the pricing was competitive and fair. I express my sincere gratitude to Gabriel for delivering an outstanding job.

Gordan Stillman★★★★★a week ago

This is my first time needing help installing floors. The last crew I hired wasn't this fast or affordable. And when I called, everybody I came in contact with was nice and patient. I felt like an actual valued customer. If I had to call then again, I wouldn't even hesitate.

All Seasons Insulation

Direct: 9259357965

5
82 Google reviews

Recent Reviews:

misscolleen1★★★★★4 years ago

From start to finish I had an excellent experience with All Seasons Insulation. Mark gave me a reasonable quote and and took the time to talk everything out with me. I had other companies come out for estimates that were thousands of dollars more in unnecessary work for our attic situation. Mark confirmed what we thought we needed done and didn't try to push anything else. I had to reschedule a few times and customer service was understanding and flexible. Install went off without a hitch and we are very happy. Thanks!

Larry & Jennifer Mack★★★★★4 years ago

My husband had contacted several companies to come and give us quotes on what it would cost to put insulation into our attic and in the walls of our house. All Seasons Insulation Co. was one of the companies we had contacted. Mark Gianino came as the estimator for All Seasons. After speaking with him, we were so impressed with Mark’s honest and informative feedback; we could tell he was not trying to have us pay for things we didn’t need. We decided that day that we would have All Seasons do the insulation job, and we booked an appointment with him. Mark called the day before to confirm our appointment, and he had also written his cell phone number on the estimate in case we needed to contact him. The crew promptly arrived and throughout the day, various members explained what they were doing, always with the goal of keeping us safe. They worked both diligently and nonstop. They cleaned up after themselves every step of the way, and were very considerate on our property. I especially appreciated that they did not disturb my plants. We would highly recommend All Seasons Insulation Co. to anyone looking to keep their home cooler in the summer and warmer in the winter. On a scale of 1 to 10, 10 being the highest, I would rate them at least an 11. We were told it would take a day, and it took about 6 hours.

Nick Adamo★★★★★3 years ago

Extremely friendly, I expected to leave a message when I called but a live person picked up. Scheduled estimate same day, Mark was extremely friendly and knowledgeable. Install crew was fantastic! They were very professional, arrived when they said they would, and showed tremendous hospitality. Treated our home like it was their own. Explained the job they’d do and delivered. I am still amazed by how efficiently and quietly they handled the install. From soup to nuts had a great experience with All Seasons and I would recommend them to anyone looking for high quality product and service!

SDI Insulation Inc

Direct: 6506855500

4.8
44 Google reviews

Recent Reviews:

Mark Howser★★★★★2 years ago

I've used SDI Insulation on 3 of my projects throughout the years... they never disappoint! They're always on time, their work is superb and have never failed an inspection for their insulation work. I'm in the custom home building industry and it's hard to find a reliable and professional insulation company in the Bay Area. You get what you pay for and SDI is my go to company for quality insulation work. I definitely recommend these guys!

Kathleen Willis★★★★★9 years ago

Excellent job from start to finish. Our project manager, Dennis, did an excellent job addressing our concerns relative to noise and draft. We followed his advice and are completely satisfied with the results. The installation team consisted of 3 very capable and delightful young men who did a terrific job. The guys worked together very well, and they were polite and professional. The supervisor arrived to put the finishing touches on the job and the fellows cleaned up beautifully. I highly recommend SDI!

Lindsay Graves★★★★★9 years ago

Everyone at SDI - from the project managers, to the job managers, to the workers - was professional, courteous and just lovely to work with. We're so impressed with the efficiency of our heating system after reinsulating our attic and adding insulation to our walls that we wish we'd done this sooner! Highly worthwhile and recommended.

Eco Attic Systems

Direct: 4157202560

4.8
49 Google reviews

Recent Reviews:

Roshan G.★★★★★a year ago

I first met Eduardo, owner of Eco Attic Systems, almost 3 years ago. At that time we had a big mold problem in our house that we had just begun remediating. I had had the attic cleaned out of the dusty fiberglass blown + batt insulation and I was looking for a mold-resistant replacement. Eduardo was very patient and talked me through the different options that he's worked with in the past. In the end I settled on mineral wool insulation. I wanted to get special order formaldehyde free insulation so I ended up ordering what I needed myself. Fast forward a few years. I ended up not being able to install the insulation after I purchased it due to other work we were having done on our house. It had been a few years, so I looked around again to see who seemed to have the most experience with installing mineral wool insulation and again landed on Eduardo and Eco Attic Systems with the most mineral wool pictures on their website and Google/Yelp. I called up Eduardo and was able to set up a installation the following Monday. On the day of installation, Eduardo's guys met me at the storage unit where I was keeping all the insulation and made quick work of loading the bags we needed onto his truck. Before they started bringing the insulation in, they set up dust containment zones and dropcloths in all the working areas to limit the amount of insulation dust that got everywhere. As someone who has installed this mineral wool insulation elsewhere in my house, this was much appreciated as it significantly limited the amount of cleaning I had to do after the fact. I was really impressed by the thoroughness and speed that they were able to set up the containment. They were able to insulate both of my attics (total 1300 sq ft) in just 5-6 hours. This was despite my insulation being 16" wide and not the 24" between trusses in my attic, resulting in a lot more cuts. The result was a very neat installation that went all the way to the edges. Again, as someone who has installed this insulation and has crawled around in my attic to do other work, it was impressive how neat the job was and that they were able to get the insulation to the hard-to-reach corners. I still have no idea how they managed to do that, but professionals have their professional techniques to make it happen. After the installation, Eduardo's guys even followed me back to my storage unit and unloaded the unused insulation back into my unit for me. Overall I had a great experience with Eduardo and Eco Attic Systems. Great service, reasonably priced, and a fantastic result. Highly recommend!

Ted Tran★★★★★a year ago

Eduardo and EcoAttic team did an awesome job cleaning and installing insulation. They also found some issues while cleaning and proactively fixed them. They are extremely hard workers, trustworthy, and I would highly recommend them. Thank you, Eduardo!

Darrell Hogue★★★★★3 years ago

Eco attic systems was great to deal with on this home insulation. They described how the process was going to go step by step and showed me photos before and after the project. Eduardo the contractor was very attentive to details and was on the job site almost the entire time. Totally recommend this company. They are what quality is about.

Armstrong Foam Roofing San Francisco Bay Area

Direct: 8334251234

4.5
31 Google reviews

Recent Reviews:

Steve Wilkalis★★★★★a month ago

I recently had the pleasure of working with Tom and the team at Armstrong Roofing and I can honestly say it was one of the best home improvement experiences I’ve ever had. From the very first phone call, Tom was incredibly professional, responsive, and downright enjoyable to work with. He walked me through every detail, made sure I understood my options, and treated my project like it was his own home. Their pricing was extremely competitive (trust me, I got multiple quotes), and the quality of their workmanship is second to none. The crew showed up on time every day, worked efficiently, cleaned up perfectly, and delivered a stunning roof that completely transformed my house. Dealing with Tom was a breath of fresh air, no games, no surprises, just honest communication and genuine care for his customers. It’s rare these days to find a company that still takes pride in doing things right, but Armstrong Roofing absolutely does. If you’re even thinking about getting a new roof, do yourself a favor and at least call Tom for a quote. You’ll see immediately why everyone raves about this company. I couldn’t recommend them more highly. Five stars all the way!

Lonnie Bosley★★★★★2 weeks ago

I recently had Armstrong Roofing handle a roofing project at my home, and I couldn’t be happier with the entire experience. Eli was the representative who came out for the inspection and estimate, and he immediately stood out with his professionalism and clear communication. He took the time to explain the condition of the roof, walked me through the options, and provided a fair, straightforward quote that made sense. Once we moved forward, the crew arrived on schedule and worked efficiently from start to finish. The workmanship was excellent, everything was done exactly the way Eli explained it would be. The team kept the area clean throughout the project, and the final cleanup was spotless, which I really appreciated. The whole process felt organized, honest, and well managed. Eli checked in during and after the job to make sure everything was completed properly and that I was satisfied. Overall, Armstrong Roofing delivered top quality work, and Eli made the entire experience smooth and stress-free. I’m extremely pleased with the results and would highly recommend them to anyone considering a roofing project.

Chelsea Jacobo★★★★★2 weeks ago

Scott came out to take a look at our roof, and right from the start he impressed us with how prepared, knowledgeable, and down to earth he was. He walked the property with us, pointed out exactly what needed attention, and broke everything down in a way that actually made sense. No pressure, no games, just an honest explanation and a clear plan. Once we decided to move forward, the crew showed up on time and handled everything with real professionalism. The work moved quickly, the pricing matched what was discussed, and the cleanup afterward was excellent. You can tell this team takes pride in what they do. Our home looks great, the roof feels solid again, and we’re honestly relieved we chose Armstrong. Big thanks to Scott for making the whole process smooth from beginning to end. Highly recommend!

Carlos Insulation Inc. | Residential & Commercial Insulation Services

Direct: 9252079469

4.4
5 Google reviews

Recent Reviews:

Qijun Tan★★★★★3 months ago

We had a very good experience with Carlos. He is very reasonable and responsive. His crew is very professional. We had to pause our project with him due to other ongoing projects. Carlos is still willing to continue our project after one year of pause.

Alina Kosinski★★★★★7 months ago

Carlos did a fantastic job replacing the insulation in the attic at our home in SF. He responded almost immediately and was available to complete the job the same week, and he was very fair on pricing. I would recommend his team and would use him again in the future.

Michael Kayton★★★★★5 months ago

Carlos and his team did a great and thorough job insulating an attic with a combination of batt and blown-in fiberglass. The work is super neat with great coverage even though the attic was challenging to work in. They were done in less than a day and treated the house with care. Highly recommend!

USA Spray Me Spray Foam Insulation Contractor & Drywall

Specialist

Direct: 8555665340

4.3
6 Google reviews

Recent Reviews:

Kyle Hoops★★★★★a month ago

USA Spray Me’s concrete polishing service was excellent. Smooth finish, tidy work, and professional conduct throughout.

SBC Construction★★★★★8 months ago

I had the pleasure of working with USA Spray Me on a recent residential project, and I couldn’t be more satisfied with the experience. They handled the entire insulation process for one of my houses, including both spraying and installation. From start to finish, the team was professional, courteous, and highly skilled. The quality of their work is outstanding. They showed great attention to detail, completed everything on schedule, and made sure the job was done right. What really stood out to me was how respectful and friendly the entire crew was throughout the process. Communication was smooth, and they were always willing to answer questions and explain each step along the way. After the job was done, they cleaned everything up thoroughly, leaving the site spotless. It’s clear that they take pride not only in the quality of their work, but also in providing excellent customer service. The workers are truly professionals, and it shows in both their attitude and results. I highly recommend USA Spray Me to anyone in need of insulation services. Great people, excellent workmanship, and a company you can trust. I will definitely be using them again for future projects.

Nina Lang★★★★★3 months ago

USA Spray Me is the best blown-in insulation company I’ve worked with. They helped me add extra insulation to my old house, and the whole process was quick and hassle-free. The team was friendly and explained everything before they started. My home stays warmer now and my energy bills dropped. Highly recommend!

Fast-Growing Spray Foam Pros

🏆Certified Pro

Direct: 3138008199

San Francisco Insulation Co.

Direct: 6282017867

Preeminent Spray Foam Contractor Inc

Specialist

Direct: 3252389058

Frequently Asked Questions — Spray Foam Insulation in San Francisco

Does spray foam insulation work well in hot dry climates like San Francisco?
Yes — spray foam is highly effective in hot dry climates like San Francisco, CA. While moisture control is less of a concern than in humid climates, the air sealing properties are critical for keeping hot desert air out and cooled air in. In extreme heat climates, an unsealed attic can reach 150°F+, dramatically increasing AC load. Spray foam in the attic can reduce attic temperatures by 30–40°F.
What is the best area of my home to insulate in San Francisco?
In hot dry climates like San Francisco, CA, the attic is typically the highest-impact area to spray foam insulate. Desert sun heats roofs to extreme temperatures, and an uninsulated attic transfers that heat directly into your living space. After the attic, crawl spaces and rim joists are the next highest-impact areas. A local contractor can perform an energy audit to identify where your home loses the most 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?
Spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your location. 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 costs $2,000–$6,000. Most 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?
Look for contractors 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 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 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.