Top-Rated Spray Foam Insulation Contractors in Southern California

 
 
 
 
 
 
 
  
 
 
 
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 Capt Eric 
 
2026-03-05
 
 
 Trustindex verifies that the original source of the review is Google. 
5 stars isn’t enough!!! Outstanding! We used another company previously and I have to say, these guys blew the other company out of the water! Punctuality, quality and overall attention to detail, these are your guys! They did the hard work the competition left for me to deal with last time. Cleaning and prepping the surfaces after spraying took us days to do with no clue how to do it! Master Insulation’s crew did all of it with expertise and speed! My walls are ready to be finished now rather than in a few days when I had to figure out how to clean it last time!

I 1000% recommend these guys and for any future projects I don’t even need to look, I have these guys on speed dial!
  
 
  
 
 
 
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 Scott Wolford 
 
2026-01-27
 
 
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Contacted three different companies. David's quote was by far the best quote and he didn't raise the price of itemized items when we fine-tuned the project. Had other quotes where companies would raise prices of items if we wanted to save costs by eliminating certain details in the quote. Our attic is about 450 sq ft and they were able to remove the old insulation, complete clean out, and install new insulation all in one day. I highly recommend them. While their team did an excellent job overall, a couple things to ensure gets done is sealing all gaps (I could see light where holes were left unsealed when they had me inspect before installing new insulation) and ensure they sweep your driveway (I found two rusty nails and a 1" staple).
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 V P 
 
2025-12-08
 
 
 Trustindex verifies that the original source of the review is Google. 
I was very satisfied with the customer service and price of the job. I vetted a few other companies before going with Master Insulation Corp. David was very professional and kept me updated during the process. He even sent me photos and video of the different steps during the process. I opted for mineral wool batt insulation and they had the best price compared to the other companies.
  
 
  
 
 
 
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 Raymond Maramis 
 
2025-09-21
 
 
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I got my old insulation taken out, attic cleaned and install new batt insulation plus radiant barrier. Called 5 different companies and master insulation gave me the best quote and they were willing to do it on a Saturday since I work on the weekdays. Great service, done in one day, clean work and best price. I would let my friends and family know if they ever need insulation services. Thank you guys!
  
 
  
 
 
 
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 Ryan McMahon 
 
2025-09-09
 
 
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I’m glad I found David and his company, he is extremely professional and fairly priced for the amazing service he provides. As an investor he is my first call for any insulation needs that I have on any of my projects. Cannot recommend him and his company enough.
  
 
  
 
 
 
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 Carina Lizarraga 
 
2025-07-01
 
 
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David and his crew are incredible!!!
Professional, timely, and clean. I was kept in the know through out the project. My attic was in horrible condition; the quality of the finish result exceeded my expectations. My mom is happy, I’m happy.
  
 
  
 
 
 
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 Steven Ocheltree 
 
2025-06-24
 
 
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We had an attic that included some of the original insulation from a house that was built in 1973, some blown in insulation done in the early 80's, and some insulation in our room additions from 1995.  It was a mess and not up to the standards that is required on new builds today.
I contacted David after observing the work on his Instagram account.  I was impressed with his work and his attention for details!  I gave him a call and we scheduled a visit so he could view and provide a quote to remove ALL existing insulation, clean/vacuum all remaining dirt and debris, seal all penetrations in the ceiling and attic walls.  Then to install new insulation which included all vertical wall in the attic that were not previously insulated.  We chose R38 insulation and we also had him install a  reflective barrier on the underside of the roof.  We also installed a WMP-50 black radiant barrier in our garage.
His team arrived promptly each morning and were hard at work for two days to get everything done.  David also came by each day to inspect the work and answer any questions I had.
I would HIGHLY recommend Master Insulation if you need any insulation work for your home.
Here are some before, cleaning, and completed pictures.
  
 
  
 
 
 
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 Michael Joy 
 
2025-05-10
 
 
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David and his crew were fantastic, reliable, and did quality work.  They arrived on time.  Cleaned the attic, sealed the attic, and installed new insulation in a little less than a full work day.

Very happy with the outcome and would recommend to anyone.
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Sergio Lopez 
 
2025-05-08
 
 
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Great business, highly recommend
  
 
  
 
 
 
 Posted on Google  
 
  
 
 
 Yonary Z 
 
2025-04-07
 
 
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David is great, have used him multiple times and my home is efficient as can be. Our ac bill is much cheaper than it used to be..

Highly recommend, he is a good person to do business with and I would nit hesitate to recommend him.