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TRUSTED BY SYLMAR, CA HOMEOWNERS
4.8
Average homeowner rating68
Verified insulation services reviews
Verified Reviews for Insulation Service pros in Sylmar, CA
*The Angi rating for Insulation Service companies in Sylmar, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
*The HomeAdvisor rating for Insulation Service companies in Sylmar, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
Last update on December 12, 2025
Find Insulation pros in Sylmar

Everguard Home Insulation Inc.
Everguard Home Insulation Inc.
Everguard Insulation has been a family business since 1959. Today, over 65 years and three generations later, we're proud of our contribution to the community, economy and environment. We help people save money on their utility bills while also enjoying a more comfortable home in both summer and winter. We also take pride in helping the environment and doing our part towards energy conservation and making the planet a greener place for generations to come. Additional phone numbers 818.348.1460 & 310.274.5644 - Additional DBA - Home Insulation Products. Award winning.
"We were very with the entire process! They took time to cover everything and the first and second team of workers were polite and careful in the work they performed. Aldi the clean up afterwards was excellent as well. We were super happy and would highly recommend them to anyone thinking of replacing there insulation!!"
Leo C on May 2025
Everguard Insulation has been a family business since 1959. Today, over 65 years and three generations later, we're proud of our contribution to the community, economy and environment. We help people save money on their utility bills while also enjoying a more comfortable home in both summer and winter. We also take pride in helping the environment and doing our part towards energy conservation and making the planet a greener place for generations to come. Additional phone numbers 818.348.1460 & 310.274.5644 - Additional DBA - Home Insulation Products. Award winning.
"We were very with the entire process! They took time to cover everything and the first and second team of workers were polite and careful in the work they performed. Aldi the clean up afterwards was excellent as well. We were super happy and would highly recommend them to anyone thinking of replacing there insulation!!"
Leo C on May 2025

Marathon Insulation
Marathon Insulation
Hi my name is Jonathan owner of Marathon Insulation. I started working for a reputable company 13 years ago, just this year I decided to start my own business. I have all the knowledge and hands on experience to answer any of your insulation questions.
"Great very pleased"
Betsy W on December 2023
Hi my name is Jonathan owner of Marathon Insulation. I started working for a reputable company 13 years ago, just this year I decided to start my own business. I have all the knowledge and hands on experience to answer any of your insulation questions.
"Great very pleased"
Betsy W on December 2023

AP Remodeling Inc
AP Remodeling Inc
LA's High-End Remodeling & Design-Build Firm Best of Houzz Service 2017-2022 Over 260 5-stars rated combined AP Remodeling Inc. team has a combined experience of 20 years in development, new construction, and remodeling services for the greater area of Los Angeles County. Our service-oriented team makes the difference you can easily witness and appreciate. This new methodology earned us our client's respect and business. Most of our work is repeat and referrals as our clients rave about our abilities, professionalism, promptness, and pricing. With 20 years of combined experience in our field, we completed hundreds of projects in every trade related to home development and improvement. We are fully licensed, insured, and bonded to perform construction work in the state of California License #1049032. We invest in educating our team to adhere to the Los Angeles Building and Safety rules and regulations while implementing the newest technologies for smart homes, and green-conscious homes. We urge you to ask for a referral as we feel that will be the best way for you to get to know us. Contact us today for a free consultation and free estimate. 818-748-8709
"Our consultant Daniel and the rest of the crew were in the simplest terms professional, easy to work with, and fairly priced for The excellent work accomplished. Ultimately what more can you ask for when you're dealing with such daunting task as remodeling your kitchen which is what we did or any house projects for that matter. So many things go wrong and so many personalities can be rubbed the wrong way, but I'm happy to say everything went smooth and we were very happy with the final product. I have already recommended AP remodeling to family members and strangers alike. If you're looking for a company that is straight up honest with communication and pricing and expected results, then look no further."
Henry A on November 2024
LA's High-End Remodeling & Design-Build Firm Best of Houzz Service 2017-2022 Over 260 5-stars rated combined AP Remodeling Inc. team has a combined experience of 20 years in development, new construction, and remodeling services for the greater area of Los Angeles County. Our service-oriented team makes the difference you can easily witness and appreciate. This new methodology earned us our client's respect and business. Most of our work is repeat and referrals as our clients rave about our abilities, professionalism, promptness, and pricing. With 20 years of combined experience in our field, we completed hundreds of projects in every trade related to home development and improvement. We are fully licensed, insured, and bonded to perform construction work in the state of California License #1049032. We invest in educating our team to adhere to the Los Angeles Building and Safety rules and regulations while implementing the newest technologies for smart homes, and green-conscious homes. We urge you to ask for a referral as we feel that will be the best way for you to get to know us. Contact us today for a free consultation and free estimate. 818-748-8709
"Our consultant Daniel and the rest of the crew were in the simplest terms professional, easy to work with, and fairly priced for The excellent work accomplished. Ultimately what more can you ask for when you're dealing with such daunting task as remodeling your kitchen which is what we did or any house projects for that matter. So many things go wrong and so many personalities can be rubbed the wrong way, but I'm happy to say everything went smooth and we were very happy with the final product. I have already recommended AP remodeling to family members and strangers alike. If you're looking for a company that is straight up honest with communication and pricing and expected results, then look no further."
Henry A on November 2024
B & J Plastering
B & J Plastering
Additional service areas - portions of South LA,All Los Angeles. Award winning.
"Perfect. Brad did the work with skill and efficiency. Great job."
Paul & Lisa R on May 2018
Additional service areas - portions of South LA,All Los Angeles. Award winning.
"Perfect. Brad did the work with skill and efficiency. Great job."
Paul & Lisa R on May 2018

Trig Builders Inc.
Trig Builders Inc.
We at Trig Builders offer all inclusive remodeling and construction services for residential and commercial customers. With over a decade of vast project experience all over Los Angeles and Ventura county, we can help you with your remodeling and build your next dream home! We are general contractors, but we also provide the following services: roofing, room additions, kitchen remodeling, bathroom remodeling, windows and doors and so much more.
"Buyer beware!!! I have never had such a nightmare with this company. Save your money and your sanity. They installed a patio cover for me. It leaked immediately. This was two years ago. For the past two years, they have been out at least 7 or 8 times claiming to "fix" the leaks. The leaks were not normal patio leaks by the way. The leaking has cause 3 of the 4 lights installed in the patio to fail. Every time they come, it's never fixed. The leaks keep getting worse. They never follow up with me, I always have to call them. They do not manage their sub contractors at all. This latest round started just before Christmas 2021, it's now been three months, four visits later. They took flashing off, said they were going to let it dry out and put it back. I didn't hear from them for two weeks, I noticed rain on the weather , I called Trig who had to send them back out to put the flashing back on. They sent some guy to do some more drastic sealing or something on my roof, they claimed it was done.....see attached photos of how they left my roof claiming it was done. Also, never followed back up with me on a light they need to replace which is still burned out and filled with water from rains. Save yourself the headache please!!! This still isn't resolved. I have filed a BBB compliant to try and help me resolve."
PERI G on March 2022
We at Trig Builders offer all inclusive remodeling and construction services for residential and commercial customers. With over a decade of vast project experience all over Los Angeles and Ventura county, we can help you with your remodeling and build your next dream home! We are general contractors, but we also provide the following services: roofing, room additions, kitchen remodeling, bathroom remodeling, windows and doors and so much more.
"Buyer beware!!! I have never had such a nightmare with this company. Save your money and your sanity. They installed a patio cover for me. It leaked immediately. This was two years ago. For the past two years, they have been out at least 7 or 8 times claiming to "fix" the leaks. The leaks were not normal patio leaks by the way. The leaking has cause 3 of the 4 lights installed in the patio to fail. Every time they come, it's never fixed. The leaks keep getting worse. They never follow up with me, I always have to call them. They do not manage their sub contractors at all. This latest round started just before Christmas 2021, it's now been three months, four visits later. They took flashing off, said they were going to let it dry out and put it back. I didn't hear from them for two weeks, I noticed rain on the weather , I called Trig who had to send them back out to put the flashing back on. They sent some guy to do some more drastic sealing or something on my roof, they claimed it was done.....see attached photos of how they left my roof claiming it was done. Also, never followed back up with me on a light they need to replace which is still burned out and filled with water from rains. Save yourself the headache please!!! This still isn't resolved. I have filed a BBB compliant to try and help me resolve."
PERI G on March 2022

Ivy Builders
Ivy Builders
What sets Ivy Builders apart is quality and personal care. We want to make sure that your project is done exactly the way you want it to - we treat every project, from small jobs to huge remodels, with the utmost care and detail orientation.
"We used Ivy Builders to remodel a 30 year-old bathroom in our 60 year-old house. Nathan and crew were outstanding. The job was on schedule and on budget. Every hiccup, bump and oversight were handled without drama. Nathan knows his business and as he told me one day, "You just plan for there to be problems and you handle it, happens on every project." We could not be happier with the job, would highly recommend!"
Jillian P on May 2024
What sets Ivy Builders apart is quality and personal care. We want to make sure that your project is done exactly the way you want it to - we treat every project, from small jobs to huge remodels, with the utmost care and detail orientation.
"We used Ivy Builders to remodel a 30 year-old bathroom in our 60 year-old house. Nathan and crew were outstanding. The job was on schedule and on budget. Every hiccup, bump and oversight were handled without drama. Nathan knows his business and as he told me one day, "You just plan for there to be problems and you handle it, happens on every project." We could not be happier with the job, would highly recommend!"
Jillian P on May 2024
"Professional Builders & Remodeling is a great company! I hired them for the first time but certainly not the last. I went with them on my kitchen remodel and they did a perfect job! They were always on time, professional, honest, and they made the whole remodeling process easy and simple. The kitchen turned out great, it's very beautiful and I love it!"
Jack M on July 2023
License - #B-800769.
"Professional Builders & Remodeling is a great company! I hired them for the first time but certainly not the last. I went with them on my kitchen remodel and they did a perfect job! They were always on time, professional, honest, and they made the whole remodeling process easy and simple. The kitchen turned out great, it's very beautiful and I love it!"
Jack M on July 2023

Golden Line Construction Inc
Golden Line Construction Inc
Golden Line Construction offers a fully inclusive client-focused construction management experience. We specialize in a Lexury custom home building and Home design, New construction, Room additions, Full home remodeling, kitchen & Bathroom remodel & Architectural design. We serve our customers in Calabasas, Thousand Oaks, Woodland Hills, Encino, Sherman Oaks, Studio City, Bel Air, Brentwood, Santa Monica, Venice, Playa Del Rey, Mar Vista, Culver City, Century City, Beverly Hills, Cheviot Hills and all surrounding areas
"I had never used my old basement and I decided to start use it but It needed remodeling. My neighbor recommended me Golden Line construction and after I saw their work on his house I hired them. They arrived on scheduled time and all employees were friendly, professional and helpful. There were some issues but working crew resolved everything easily. My basement looks amazing, better than I expected. Highly recommended contractor!"
James C on November 2019
Golden Line Construction offers a fully inclusive client-focused construction management experience. We specialize in a Lexury custom home building and Home design, New construction, Room additions, Full home remodeling, kitchen & Bathroom remodel & Architectural design. We serve our customers in Calabasas, Thousand Oaks, Woodland Hills, Encino, Sherman Oaks, Studio City, Bel Air, Brentwood, Santa Monica, Venice, Playa Del Rey, Mar Vista, Culver City, Century City, Beverly Hills, Cheviot Hills and all surrounding areas
"I had never used my old basement and I decided to start use it but It needed remodeling. My neighbor recommended me Golden Line construction and after I saw their work on his house I hired them. They arrived on scheduled time and all employees were friendly, professional and helpful. There were some issues but working crew resolved everything easily. My basement looks amazing, better than I expected. Highly recommended contractor!"
James C on November 2019

SES Builders inc
SES Builders inc
SES Builders Inc. is a General Contractor with over 10 years of extensive experience in New Construction, Room Additions, Custom Home, Roofing, Renovations, Kitchen / Bathroom Remodels, Garage Conversions (ADU), Outdoor Kitchen & entertainment areas, Interior & Exterior Paint, Pools, Landscape / Hardscape, help with Architectural plans / designs, Open floor plan renovations & more! Our team is highly trained, licensed with the California State License board, Insured & bonded to bring our clients peace of mind and complete satisfaction. Personalized client support, Professionalism, and Quality Workmanship are just some of the many qualities our team brings to our client's! Call now to schedule your FREE consultation, one of our friendly representatives will be more than happy to assist you!
"SES is the best company you can think of when it comes to remodeling your house. I finished my project 6 months ago and the communication was great. Maiia from the office kept on following up with every question we had. We had the SES app that we communicated easier and saw pictures of our project throughout the process. We live half of the year in Russia and due to COVID we couldn't come back so it took a while until we were able to see how it came out. Job was done properly, they cleaned the house when they finished and it was a pleasure to do business with them."
Beverly S on October 2020
SES Builders Inc. is a General Contractor with over 10 years of extensive experience in New Construction, Room Additions, Custom Home, Roofing, Renovations, Kitchen / Bathroom Remodels, Garage Conversions (ADU), Outdoor Kitchen & entertainment areas, Interior & Exterior Paint, Pools, Landscape / Hardscape, help with Architectural plans / designs, Open floor plan renovations & more! Our team is highly trained, licensed with the California State License board, Insured & bonded to bring our clients peace of mind and complete satisfaction. Personalized client support, Professionalism, and Quality Workmanship are just some of the many qualities our team brings to our client's! Call now to schedule your FREE consultation, one of our friendly representatives will be more than happy to assist you!
"SES is the best company you can think of when it comes to remodeling your house. I finished my project 6 months ago and the communication was great. Maiia from the office kept on following up with every question we had. We had the SES app that we communicated easier and saw pictures of our project throughout the process. We live half of the year in Russia and due to COVID we couldn't come back so it took a while until we were able to see how it came out. Job was done properly, they cleaned the house when they finished and it was a pleasure to do business with them."
Beverly S on October 2020

4 Seasons Remodeling & Design Inc.
4 Seasons Remodeling & Design Inc.
General contractor and design specialized in interior and exterior work
"We worked with 4 Season Remodeling & Design for our hardscape remodel, and they did an amazing job! The crew was friendly, efficient, and clearly knew what they were doing. Our patio and walkway came out better than we imagined — clean lines, great design, and quality materials. They also kept us updated every step of the way, which made the whole experience stress-free. Definitely a company we’ll call again for future projects."
Shanna V on November 2025
General contractor and design specialized in interior and exterior work
"We worked with 4 Season Remodeling & Design for our hardscape remodel, and they did an amazing job! The crew was friendly, efficient, and clearly knew what they were doing. Our patio and walkway came out better than we imagined — clean lines, great design, and quality materials. They also kept us updated every step of the way, which made the whole experience stress-free. Definitely a company we’ll call again for future projects."
Shanna V on November 2025
FAQs for insulation service projects in Sylmar, CA
When choosing a professional insulation installer, consider asking these questions to determine the best fit.
Will you address air leaks in my house?
Can you provide an R-value (heat resistance) fact sheet?
What kind of insulation will work best for my home?
How do you handle signs of a water leak?
Are you licensed and insured?
Can you provide customer references?
The best type of insulation for your home depends on what you need, so the answer will depend on your specific situation. If you’re building a house, structural panels are easy to install during the building process in addition to being the most energy efficient type. If you live in a warm climate, reflective insulation may benefit you more as it costs less than other insulation types. And for standard attics, loose-fill, spray foam, or blown-in insulation work well.
If you plan to heat or cool your garage, you’ll need to insulate the garage ceiling. Insulating your garage ceiling will make your garage much more energy efficient and save on heating and cooling costs. Not only does insulation make your garage more energy efficient, it helps reduce noise and can extend the life of your garage roof. You can use fiberglass, cellulose, mineral wool, or spray foam insulation for this project.
In some cases, you may not have enough insulation to properly regulate your home’s temperature. Watch for a few signs your home needs more insulation, such as:
High heating and cooling bills
Uncomfortable room temperatures
Ice dams on the edge of your roof
Roof leaks
Cold floors and walls
Freezing pipes
Temperature fluctuations
Visibly low insulation
Noise problems
Pest problems
On average, insulating an attic costs about $2,500, ranging from $1,500 to $3,500, depending on the insulation type, amount, and your attic’s accessibility. Additional cost factors include sealing air leaks, removal or replacement of insulation, and inspections. Types of insulation include:
Blown-in: $1–$4 per square foot
Spray foam: $2–$5 per square foot
Batt: $2–$4 per square foot
Structural insulated panels: $4–$7 per square foot
Loose-fill: $2–$5 per square foot
Reflective: $0.50–$1.50 per square foot
The Sylmar, CA homeowners’ guide to insulation services
From average costs to expert advice, get all the answers you need to get your job done.

The cost to insulate a basement varies based on materials, size, and other factors, as well as how much of the work you wish to perform yourself.

Insulating your attic can massively improve your home’s efficiency and reduce electric bills. Use this guide to find out what attic insulation will cost you.
•Discover roof insulation costs, including average prices, key cost factors, and expert tips to help you budget and save on your next project.

Insulation does more than keep your house warm in the winter and cool in the summer. Consider these factors when deciding to insulate your interior walls.

Learning how to install insulation requires technique, patience, and safety training. Read our guide to see if it’s a DIY project you should take on yourself.

If you are planning to add insulation to your home, you’re likely wondering: what R-value do I need? Our guide explains what you need to know to insulate your home properly.
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