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Crawl Space Insulation

Insulation Contractor · Oakland, CA

Residential
Active

About

Crawl Space Insulation takes on insulation work around Oakland and handles attic upgrades, crawl space sealing, blow-in jobs, spray foam installs, whole house fans, air sealing, and energy audits. The team includes technicians such as Marvin, Ernest, Sebastian, Harold, Dillon, Conner, Nathan, Jorge, and Raymond who meet homeowners, walk through the spaces, and carry out the work. Reviews note the crew often arrives as a family-run group that checks conditions in attics, walls, and crawl spaces before starting.

Customers describe jobs that fix uneven temperatures, remove old or damaged insulation after storms or rodent issues, seal gaps around ducts and rim joists, and add fresh material to garages and attics. Ernest, Marvin, and Conner showed up early, explained each step, protected floors with plastic, and finished with a full cleanup so nothing looked disturbed. Harold and Sebastian handled duct repairs, rodent entry points, and moisture concerns while Marvin gave clear quotes that came in under other bids. Several homeowners saw their AC run less and rooms stay more even after the new insulation went in.

The crew responds quickly to calls, shows up on schedule or calls ahead if delayed, and keeps pricing straightforward with no pressure during estimates. They work in attics and crawl spaces during regular daytime hours, cover surfaces, and stay until the scope is complete. Homeowners mention fair costs that matched expectations, detailed inspections with photos, and extra fixes like weak spots or loose ceiling lights done without added hassle. Service covers the local area with crews that communicate plainly about airflow, ventilation, and energy improvements.

Google shows 4.8 from 87 reviews that praise clean sites, knowledgeable crews, and noticeable comfort gains in hot weather. Reviewers keep coming back to on-time arrivals, careful handling of property, and honest explanations from Marvin, Ernest, Sebastian, and Harold. DIRT Score 4.5 from reviews on Finds.

DIRT Score Breakdown

Google

87 reviewsView on Google →

4.8

DIRT Score = confidence-weighted rating across verified review platforms. How is this calculated? →

What Customers Say

“Great service from this insulation contractor. Ernest, Marvin, and Conner were very professional, skilled, and easy to work with. They explained every step of the insulation process clearly and answered all of our questions. The crew arrived early in the morning and worked efficiently through the day. From start to finish, it was a great experience. They were very careful while accessing the roof area to complete the blow-in insulation work, and they put everything back neatly. You can’t even tell anything was moved. When the job was finished, they cleaned up so well it looked like they had never been there. The new insulation has made a big difference in our home. The indoor temperature feels much more comfortable and is easier to manage during the Dallas heat, and the house feels more energy efficient overall. We did have to wait a while for our appointment, but the quality of the insulation work made it well worth it.”

P Graham

“We had new attic insulation installed along with a quiet cool whole house fan system, and the entire project went very smoothly. The old fan was removed, the new unit was put in properly, and the ceiling area that needed patching was finished neatly. The insulation work was completed quickly and efficiently, and the crew showed good knowledge of attic airflow, ventilation, and energy saving improvements. Everything was handled with care, and the work helped make the house feel more comfortable for the Dallas heat. The workers were on time, polite, and easy to talk to throughout the job. They protected our property with plastic coverings, kept the work area organized, and did a thorough cleanup when everything was finished. Dillon kept us informed from start to finish and made the whole process easy to understand. He explained the estimate, financing options, and each step of the insulation and fan installation clearly, which gave us a lot of confidence in the service. We are very happy with the results and would highly recommend this insulation contractor to anyone needing attic insulation, whole house fan installation, or other home energy efficiency upgrades.”

Hector4 V

“after retiring from a long career in residential construction, i started renovating my older home and found that the attic insulation needed a major upgrade. i also realized the wall insulation was below standard, so i reached out to an insulation contractor for an estimate. marvin was very knowledgeable, explained clearly what needed to be done, and provided a fair quote that came in lower than another option i had been considering. the whole process felt honest, professional, and easy to understand. on the scheduled day, a supervisor arrived before the crew, took before photos, and explained that he would return after the insulation work was completed. when the installers showed up, it was clear they knew their trade well. sebastian and his crew worked carefully, took pride in the job, and made the whole experience pleasant. they cleaned up thoroughly when finished, and the supervisor came back to confirm everything was done right and that i was happy with the results. with the improvement in attic and wall insulation, the house feels better protected from the texas heat, and i would gladly recommend this insulation company.”

E Mcintyre

“Prompt, professional, high-quality work, and friendly service. That describes my experience with this insulation contractor and the crew. The pricing was fair and right in line with what I expected, maybe even a little better. My insulation project had a lot of moving parts, including ventilation concerns and some mold trouble that needed to be addressed before the insulation work could move forward. Ernest went out of his way to offer helpful advice and, when needed, brought in the right expert to inspect the problem areas and recommend the best solution. They helped me understand what needed to be done to improve airflow, air sealing, and overall energy efficiency before installing the insulation. Throughout the whole process, the team stayed knowledgeable, responsive, and easy to work with, and the pricing remained competitive. Harold was also great to work with and very personable. My only small suggestion is to make sure promised job photos are sent over after the work is completed. Overall, it was a very good experience and I appreciated the professionalism, guidance, and solid insulation service.”

Mason Morse

“One of the most honest and reliable insulation contractors I have worked with. After my family moved into a new home in Dallas, several people who checked the attic kept telling us the same thing: signs of rodents and very little insulation. It was clear the attic needed serious attention. With the Texas heat, we quickly noticed how inefficient the house was, and on hot days the AC had a hard time keeping the home comfortable. I knew the attic insulation, air sealing, and cleanup needed to be handled before the problem got worse. I first got an estimate from another insulation company for insulation removal, attic sanitizing, rodent proofing, sealing entry points, new blown-in insulation, and a whole house fan. The price was far higher than expected, so I had to delay the project for a while. Later, I found this company and decided to call for another attic insulation quote. They offered the same type of services, and the process was much easier from the start. Sebastian came out within a few days to inspect the attic and confirmed exactly what was going on. He explained everything clearly, including the condition of the old insulation, the areas that needed sealing, and how much n”

Destiny Barry

“We had a very positive experience with the initial home energy audit focused on insulation and air sealing. Since our house is older, we wanted help with the crawlspace, attic insulation, attic finishing, and overall drafty areas that were affecting comfort and efficiency. Harold was thorough, professional, friendly, and patient while answering all of our questions. The inspection was detailed and helpful, and the whole evaluation process gave us confidence in the insulation contractor’s knowledge and recommendations. Even before receiving the full report, we were very pleased with the service and would highly recommend them for attic insulation, crawlspace sealing, and improving energy efficiency in a Dallas home.”

Lucas Patel

“I found out the older home i am renovating in Dallas had little to no insulation, so i reached out for help with the upgrade. I spoke with ernest, and the insulation contractor was able to come out quickly, look over the attic and wall areas, provide a clear estimate, and get the insulation job scheduled without delay. It is a family-run team, and marvin was on site making sure the work was done with real attention to detail and solid workmanship. He carefully checked the hole plugs, went over the skim coat twice, and made sure there was no leftover spackle, so the surfaces were ready to prime and paint as soon as they dried. They also explained the insulation process in simple terms, kept the work area clean, and made the whole project smooth from start to finish. I really appreciate the fast turnaround, professional service, and the care they put into every part of the insulation work, especially with how important it is in Dallas to help the home stay more comfortable during the hot weather.”

Alexis Walters

“The customer service was great, and the crew was very friendly and easy to work with. After looking more closely at the insulation project, it seems the main issue may have been that only the upstairs was insulated, so the full energy-saving and sound control benefits were likely limited. Even so, the team explained the process well and was professional throughout the job. It also seems possible that adding attic or roof insulation along with the upstairs work would have made a bigger difference in indoor comfort and overall efficiency, especially during the hot summer months in TX. Overall, the experience with the insulation contractor and staff was positive, and the service was handled in a courteous and professional way.”

Derrick Brewer

“Crawl Space Insulation did an excellent job on my attic and crawl space. Harold and the crew were professional, careful, and easy to work with from start to finish. The inspection was detailed and clear, and they provided photos so I could see exactly what needed attention with the insulation, air ducts, and rodent entry points. They found damaged duct areas where conditioned air was escaping into the crawl space instead of cooling and heating the living areas properly. They fixed the issue, improved the insulation performance, sealed up problem spots, and helped make both spaces cleaner and better protected from rodents and moisture. They also cleaned and treated the wood framing and left everything neat when the work was done. I really appreciated how thorough and particular they were with every part of the job. The attic now feels much more efficient, and the crawl space looks well sealed and professionally handled. The work was clean, the communication was good, and the overall service was well worth the price.”

Candace7 M

“They arrived just a little late but called ahead to keep me updated. The insulation crew still made it out and completed the job as promised, which I really appreciated. They were careful, skilled, polite, and professional from start to finish. They covered the hardwood floors with plastic and took extra care to keep the house clean with no mess left behind. They invited me to look over the work and made sure everything matched the scope we discussed. While blowing insulation into the attic, they also found a weak spot and fixed that area with an added insulation solution at no extra hassle. That extra attention really showed their experience and commitment to doing the job right. I especially appreciated not having to go into the attic myself after the blown-in insulation was installed so the R-value would stay consistent. I highly recommend them for attic insulation and related insulation work.”

Walter Andersen

“From the moment I reached out to Crawl Space Insulation for a quote, the whole experience was fast, simple, and stress-free. Marvin, who helped me with the estimate, was extremely helpful. The installers did a wonderful job—although I didn't talk to them much, when I did, they were professional and friendly. The process went smoothly from start to finish, and I’m really happy I made the call. The price for the insulation work was budget-friendly, and I can already feel my home staying much cooler, which is important with our hot Texas weather. I highly recommend getting your insulation done with this company if you want to make your home more comfortable. After the crew finished the second part of my project, I was even more impressed. Ernest and the team worked efficiently and left everything clean. The quality of the insulation install has really made a difference in my home. My only regret is not reaching out to them sooner. If you need insulation work, you’ll be glad you chose these folks!”

L Compton

“my garage didn't have any insulation when it was built, and the attic in my house only had the bare minimum. when i reached out for a quote, there was no pressure or sales pitch—just clear info about the different r-values for both the garage and the rest of my house. i appreciated being able to make the choice myself. any questions i had were answered professionally, and dillon recognized that i already understood a lot about insulation, so he didn't try to over-explain things. on installation day, the crew worked quietly in the attic, and i barely noticed they were there, which was great since i had meetings most of the day. they stayed as long as needed to finish the job, which was expected because there was quite a bit to do. after they finished, everything was left super clean. since getting the insulation done, i've already noticed a big improvement—the garage feels much cooler, and the temperature inside the house is more steady. my data logger shows that the temperature doesn’t swing as much, so my ac isn’t running as often, which is great here in texas. the only thing i had to follow up on was getting the final invoice and the photos of the work. after i sent a quick remin”

doris krause

“I recently had open cell spray foam insulation installed in my attic by this contractor. From start to finish, the whole process went very smoothly. Sebastian and the crew paid close attention to detail, making sure not to cover up any important outlets or windows, and were very thorough with the insulation work itself. The spray foam was applied evenly, and I can already tell the difference in keeping my home cooler, which is so important with the hot Texas weather. The team was professional and efficient. While I did notice some debris and leftover materials at first, I believe this happened because they focused on doing an outstanding job with the insulation itself, which I really appreciate. The quality of the work exceeded my expectations, and I have heard many other positive reviews about this company as well. I would definitely recommend them to anyone looking for insulation services to help keep their house comfortable in the Texas heat.”

Mindy Hester

“I had a great experience with an insulation contractor who worked on my home. They arrived a bit late, but once they got there, they quickly got to work in the attic. The team was friendly and knowledgeable, ensuring that everything was handled with care. They took precautions around the fire pipes and made sure the insulation was blown in properly. I appreciate their dedication to the job, and the crew was very professional throughout the process. I feel much more comfortable in my home now that the insulation work is completed. I would definitely recommend this service to others looking for quality insulation work in Dallas.”

Maximus Reid

“I recently had an energy assessment done at my home in Dallas, and it was suggested that I add insulation to the rim joists in the basement, the attic, and the kneewalls in our guest room to help keep the house cooler during those hot Texas summers. I contacted a few local insulation contractors and decided to go with one that seemed knowledgeable and passionate. Nathan, who I spoke with on the phone, answered all my questions and explained the process in detail. When his team, led by Sebastian, arrived for the initial assessment, I felt confident that they knew what they were doing. The installation took two days. The crew worked efficiently and kept me updated on their progress. After they finished, I walked around to check the work. I was pleased with how neatly the insulation was installed in the attic and basement. The team made sure to seal up the windows and other areas to improve our home's energy efficiency, and they cleaned up after themselves so there was very little dust left behind. One thing I appreciated was how careful they were with our belongings, especially in the garage where they blew insulation into the ceiling. Everything was covered and protected so there wa”

Wesley Avila

“Crawl Space Insulation removed all the damaged insulation from my attic after a storm. The crew was fast, professional, and really knew what they were doing. Sebastian and his team showed up ready to work, even with rough weather still happening in Dallas. They replaced the attic insulation quickly, and everything was cleaned up perfectly before they left. My home is much cooler now, and the new insulation is thick and evenly installed—much better than before. I definitely recommend their services if you need insulation work done. You can trust that the job will be handled well.”

Donovan9 E

“Earlier this year, I had my home in Dallas tested and insulated by a professional insulation contractor. The crew, including Ernest and Jorge, was very friendly and kept everything clean throughout the process. I immediately noticed a big improvement—the temperature inside my house is now much easier to control. Before, my upstairs bedrooms would always get too hot during the Texas summer, but after the new insulation was installed, they stay much more comfortable. I no longer worry about any rooms getting too warm or too cold. I highly recommend this insulation contractor to anyone in Dallas looking to make their home more energy efficient and comfortable.”

Lauren Keller

“I want to give the highest recommendation possible for this insulation contractor. I work in home remodeling and repair, and one of my clients was having issues with dust and breathing problems in her home. After checking things out, we found that there were several gaps in the ceiling left from a previous remodel. Her house had a lot of recessed lights, which allowed dirt and fiberglass dust from the attic to enter the living space. When I reached out to this insulation team, I was planning to have the old insulation vacuumed out and replaced. To my surprise, Sebastian and Dillon explained that they offered complete, turn-key insulation services and would handle everything to make sure we were totally satisfied. I have high standards, especially for my best customers, and they really delivered. They arrived with top-quality insulation vacuums and spent two days carefully removing every bit of old fiberglass and dust from the attic. After that, they installed flame-resistant covers on all the recessed lights and sealed them up to prevent dust from coming through. On the third day, they blew in 12 inches of new loose-fill insulation throughout the attic. Sebastian and Dillon are ext”

luna pennington

“I have been very impressed with the insulation contractor team I worked with in Dallas. From the start, Raymond gave a detailed and low-pressure assessment of my home. The price for adding new insulation in my garage ceiling and attic, as well as sealing my heating vents, was very reasonable. Marvin and Sebastian were both courteous and professional while working in my house over two days. After just one day, I could already tell that my AC was running less, even on a hot day, and the temperature in different parts of my home became much more even. I would highly recommend this team and would use their services again in the future.”

Lucy M

“Crawl Space Insulation gave us a great experience with our attic insulation project in Dallas. We needed our attic cleaned, sealed, and new insulation installed, and the crew handled everything smoothly. They made sure to carefully separate the work area from the rest of the house, keeping everything tidy. The team, led by Sebastian, did a very thorough job vacuuming out all the old insulation, sealing up gaps and cracks, and putting in fresh new insulation—all in just one day. They also took care of sealing up openings in our garage and exterior walls to help keep pests out. When a ceiling light came loose during the process, their handyman came by the next day and fixed it quickly at no extra charge. We are very happy with the results and would definitely recommend them for any insulation work.”

krista alvarez
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