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Attic insulation installers in Sylmar

Avatar for Marathon Insulation

Marathon Insulation

5.00(
15
)
•Approved Pro

Marathon Insulation

5.00(
15
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
306 local quotes requested

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.

"Jonathan and his team did an incredible job with my new (to me) home in Pasadena. Vacuumed out all the old insulation and rodent droppings, fully blew in cellulose and insulated the entire attic space (floor joists, knee walls, ceilings, etc). It's an old Craftsman home and a bunch of those spaces didn't have access, but Jonathan and his team cut discrete holes / access hatches and explained everything beforehand. Incredibly pleasant and as a small business owner myself I have nothing but respect for the ownership he shows for his work."

David G on September 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.

"Jonathan and his team did an incredible job with my new (to me) home in Pasadena. Vacuumed out all the old insulation and rodent droppings, fully blew in cellulose and insulated the entire attic space (floor joists, knee walls, ceilings, etc). It's an old Craftsman home and a bunch of those spaces didn't have access, but Jonathan and his team cut discrete holes / access hatches and explained everything beforehand. Incredibly pleasant and as a small business owner myself I have nothing but respect for the ownership he shows for his work."

David G on September 2023

Avatar for Byron's Flooring

Byron's Flooring

4460 Overland Ave
4.58(
71
)
•Approved Pro

Byron's Flooring

4460 Overland Ave
4.58(
71
)
•Approved Pro
Customers say: Quality work
842 local quotes requested
17 years of experience

Byron's Flooring Offers: new installations of prefinished and unfinished wood floors. Repairs. Solid hardwood flooring. Engineered wood flooring. Stairs. Complete sand down and refinishing of solid hardwood floors and engineered wood floors. Epoxy concrete Flooring, Vinyl flooring. Laminate flooring. Cork Resilient flooring. Linoleum flooring. VCT flooring. Carpet tile flooring. Garage concrete epoxy flooring. Base molding installation & Crown molding installation. Now offering at no cost, Dust Less Service. My primary business phone number is (310) 740-0403 email address byrongm7@gmail.com

"This guy I the best. Worth every penny. My floors had holes and were shaking. My mom is in a wheel chair so this is not acceptable. Not only did he reinforce and level the floor he also recommended the right type of flooring. He truly went above and beyond. I would give him 10 stars it I could. ✨️"

Amos J on April 2023

Byron's Flooring Offers: new installations of prefinished and unfinished wood floors. Repairs. Solid hardwood flooring. Engineered wood flooring. Stairs. Complete sand down and refinishing of solid hardwood floors and engineered wood floors. Epoxy concrete Flooring, Vinyl flooring. Laminate flooring. Cork Resilient flooring. Linoleum flooring. VCT flooring. Carpet tile flooring. Garage concrete epoxy flooring. Base molding installation & Crown molding installation. Now offering at no cost, Dust Less Service. My primary business phone number is (310) 740-0403 email address byrongm7@gmail.com

"This guy I the best. Worth every penny. My floors had holes and were shaking. My mom is in a wheel chair so this is not acceptable. Not only did he reinforce and level the floor he also recommended the right type of flooring. He truly went above and beyond. I would give him 10 stars it I could. ✨️"

Amos J on April 2023

Avatar for Royal Oak Flooring, Inc

Royal Oak Flooring, Inc

19503 Ventura Blvd
4.71(
184
)
•Approved Pro

Royal Oak Flooring, Inc

19503 Ventura Blvd
4.71(
184
)
•Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
542 local quotes requested

Specializing in Traditional and Modern Hardwood Floor, Luxury Vinyl Plank, and Engineered Flooring Installation, Sanding and Refinishing. Family Owned and Operated, Royal Oak Flooring, Inc has achieved a level of excellence unmatched in the flooring industry. CSLB Licensed and Bonded #1043907

"Laurie and David are gems. They and their team make sure that you feel appreciated as a customer and their quality of work cannot be beat. I would absolutely recommend them and use them again."

Ashley K on May 2022

Specializing in Traditional and Modern Hardwood Floor, Luxury Vinyl Plank, and Engineered Flooring Installation, Sanding and Refinishing. Family Owned and Operated, Royal Oak Flooring, Inc has achieved a level of excellence unmatched in the flooring industry. CSLB Licensed and Bonded #1043907

"Laurie and David are gems. They and their team make sure that you feel appreciated as a customer and their quality of work cannot be beat. I would absolutely recommend them and use them again."

Ashley K on May 2022

Avatar for Everguard Home Insulation Inc.

Everguard Home Insulation Inc.

23450 Collins Street
4.84(
186
)
•Approved Pro

Everguard Home Insulation Inc.

23450 Collins Street
4.84(
186
)
•Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
398 local quotes requested

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

Avatar for Valley Carpet One

Valley Carpet One

5836 Sepulveda Blvd
4.85(
137
)
•Approved Pro

Valley Carpet One

5836 Sepulveda Blvd
4.85(
137
)
•Approved Pro
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
321 local quotes requested

We are here to help you with your flooring projects. Our showroom has been recently been remodeled to create an even better shopping experience for you. As always, thank you for your patronage during our 50+ years of serving the flooring needs of customers like yourself in the San Fernando Valley & beyond, and we hope we can continue to be of service to you. Family-owned & Locally-operated since 1973. First "Carpet One" store in the San Fernando Valley, and a member since 1990. Licensed and bonded. CSLB #432146.

"They were super helpful from start to finish. Karen in sales helped me find the perfect shade. The install team was quick and professional. Did a beautiful job!"

Laura M on June 2025

We are here to help you with your flooring projects. Our showroom has been recently been remodeled to create an even better shopping experience for you. As always, thank you for your patronage during our 50+ years of serving the flooring needs of customers like yourself in the San Fernando Valley & beyond, and we hope we can continue to be of service to you. Family-owned & Locally-operated since 1973. First "Carpet One" store in the San Fernando Valley, and a member since 1990. Licensed and bonded. CSLB #432146.

"They were super helpful from start to finish. Karen in sales helped me find the perfect shade. The install team was quick and professional. Did a beautiful job!"

Laura M on June 2025

Avatar for Always Improve Flooring

Always Improve Flooring

14639 Calvert St
4.98(
46
)
•Approved Pro

Always Improve Flooring

14639 Calvert St
4.98(
46
)
•Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
400 local quotes requested

Flooring business since 2002. Licensed,bonded and insured. Installation, sales, refinishing, repairs, stairs, stain, buffing, leveling, tile floors, shower, backsplashes. And much more. Professional and responsible crews.

"I am writing this review out of sheer gratitude and happiness! Juan and his crew truly went above and beyond on the existing highly glossy, aged yellow floors. They managed to convert them into a modern, extra matte , almost blonde finish without sanding, merely removing the polished surface and buffing out scratches and marks, creating a flawless, stunning finish! I’m struggling to find words to express my joy and a fraction of the cost of all other quotes AND the next day before Labor Day, so much more, important to finish with job complete in a few hours!!!! Please 🙏🏻"

leila a on September 2025

Flooring business since 2002. Licensed,bonded and insured. Installation, sales, refinishing, repairs, stairs, stain, buffing, leveling, tile floors, shower, backsplashes. And much more. Professional and responsible crews.

"I am writing this review out of sheer gratitude and happiness! Juan and his crew truly went above and beyond on the existing highly glossy, aged yellow floors. They managed to convert them into a modern, extra matte , almost blonde finish without sanding, merely removing the polished surface and buffing out scratches and marks, creating a flawless, stunning finish! I’m struggling to find words to express my joy and a fraction of the cost of all other quotes AND the next day before Labor Day, so much more, important to finish with job complete in a few hours!!!! Please 🙏🏻"

leila a on September 2025

Avatar for Insulation Labs

Insulation Labs

7023 Valjean Ave
4.94(
118
)
•Approved Pro

Insulation Labs

7023 Valjean Ave
4.94(
118
)
•Approved Pro
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
491 local quotes requested

Attic & Crawlspace & Solar Energy Specialists. The Insulation Labs team has unmatched customer service and attic/solar experience. Pooling years of knowledge and expertise together in order to provide you with the best service possible. Our team is friendly and helpful, explaining any jargon to you in a concise and understandable manner. It is important to work with a team that has a good reputation in your local community; Insulation Labs is known for its affordability, professionalism, and world-class customer service in the greater Los Angeles area. We have earned a reputation as one of the top attic cleaning and insulation replacement services in greater Los Angeles, continually furthering our stellar reputation and customer satisfaction. We provide our customers with home solutions that are tailored to them, allowing them to improve their attics, crawl spaces, and their home's energy efficiency in no time!

"The guys were really neat. They set up a tunnel from the attic to the back door. There really wasn't much to clean up after. They vacuumed out the old insullation and laid in new. It's hard to say if they did a good job in the attic, because I don’t know what its supposed to look like. They were in the attic almost about 7 hours. The only issue was that they said the senior discount on their Angie's list page must be old so they didn't honor it."

Pamela D on November 2024

Attic & Crawlspace & Solar Energy Specialists. The Insulation Labs team has unmatched customer service and attic/solar experience. Pooling years of knowledge and expertise together in order to provide you with the best service possible. Our team is friendly and helpful, explaining any jargon to you in a concise and understandable manner. It is important to work with a team that has a good reputation in your local community; Insulation Labs is known for its affordability, professionalism, and world-class customer service in the greater Los Angeles area. We have earned a reputation as one of the top attic cleaning and insulation replacement services in greater Los Angeles, continually furthering our stellar reputation and customer satisfaction. We provide our customers with home solutions that are tailored to them, allowing them to improve their attics, crawl spaces, and their home's energy efficiency in no time!

"The guys were really neat. They set up a tunnel from the attic to the back door. There really wasn't much to clean up after. They vacuumed out the old insullation and laid in new. It's hard to say if they did a good job in the attic, because I don’t know what its supposed to look like. They were in the attic almost about 7 hours. The only issue was that they said the senior discount on their Angie's list page must be old so they didn't honor it."

Pamela D on November 2024

Avatar for Arthur's Remodeling

Arthur's Remodeling

Based In
4.80(
10
)
•Approved Pro

Arthur's Remodeling

Based In
4.80(
10
)
•Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
1989 local quotes requested

Arthur's Flooring is a complete Flooring Store that is family owned and operated. We are a fully licensed and insured Contractor that specialize in Wood floors, Vinyl floors and Laminate floors. We are experts in tile installation of Ceramic Tile, Porcelain Tile, Glass Tile, Marble Tile, Granite Tile and other Natural Stone Tile. Bathroom remodeling experts that know how to make your dreams come true. Give us a call today for a free estimate.

Arthur's Flooring is a complete Flooring Store that is family owned and operated. We are a fully licensed and insured Contractor that specialize in Wood floors, Vinyl floors and Laminate floors. We are experts in tile installation of Ceramic Tile, Porcelain Tile, Glass Tile, Marble Tile, Granite Tile and other Natural Stone Tile. Bathroom remodeling experts that know how to make your dreams come true. Give us a call today for a free estimate.

Avatar for Dynamic Hardwood Flooring

Dynamic Hardwood Flooring

243 E 78th St
4.50(
8
)
•Approved Pro

Dynamic Hardwood Flooring

243 E 78th St
4.50(
8
)
•Approved Pro
Customers say: Terrific value
1132 local quotes requested
22 years of experience

We have been working in Hardwood Flooring for 15+ years. We keep up to date with new trends in Hardwood Flooring, Technics, and Tools. We have been serving the Los Angeles county for years.

"Victor, the owner of Dynamic Hardwood Flooring was very professional and knowledgeable. I appreciate the reasonable pricing, his guidance with choosing material, and his personal involvement with the installation. He began the project right away with the removal of our old, carpet and completed the job in less than a week. Our large 2 story home was beautifully finished with wood floors throughout - and super clean at completion of the job. I thank Victor for his excellent workmanship and courtesy. Yes, I, +100% recommend Dynamic Hardwood Flooring. Patricia Wiemann"

Trish W on March 2025

We have been working in Hardwood Flooring for 15+ years. We keep up to date with new trends in Hardwood Flooring, Technics, and Tools. We have been serving the Los Angeles county for years.

"Victor, the owner of Dynamic Hardwood Flooring was very professional and knowledgeable. I appreciate the reasonable pricing, his guidance with choosing material, and his personal involvement with the installation. He began the project right away with the removal of our old, carpet and completed the job in less than a week. Our large 2 story home was beautifully finished with wood floors throughout - and super clean at completion of the job. I thank Victor for his excellent workmanship and courtesy. Yes, I, +100% recommend Dynamic Hardwood Flooring. Patricia Wiemann"

Trish W on March 2025

Avatar for Monteros Hardwood Flooring

Monteros Hardwood Flooring

717 W 36th St
4.93(
120
)
•Approved Pro

Monteros Hardwood Flooring

717 W 36th St
4.93(
120
)
•Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
1150 local quotes requested

Monteros Hardwood flooring has been a family owned and operated business for over 15 years. We take pride in the quality of each of our projects. We do all hardwood floor work for residential homes along with commercial projects. Monteros Hardwood flooring does the job right. FINANCING AVAILABLE - Please ask for details

"The team was very prompt, professional and efficient. They finished the work in the specified timeframe and the floors look amazing. Very happy with the results and I highly recommend this company."

david m on June 2025

Monteros Hardwood flooring has been a family owned and operated business for over 15 years. We take pride in the quality of each of our projects. We do all hardwood floor work for residential homes along with commercial projects. Monteros Hardwood flooring does the job right. FINANCING AVAILABLE - Please ask for details

"The team was very prompt, professional and efficient. They finished the work in the specified timeframe and the floors look amazing. Very happy with the results and I highly recommend this company."

david m on June 2025

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FAQs for attic insulation installation projects in Sylmar, CA

The best attic insulation depends on where you live, the project stage, and your budget. New builds often benefit from structural insulated panels for top-tier efficiency, while homes in very warm regions can see big cooling savings with reflective insulation. Blown-in, loose-fill, and spray foam all excel at filling odd spaces in finished attics. Talk with a certified local pro to match the material to your climate, space, and wallet.

You’ll only need a licensed electrician if the project calls for moving existing wiring or adding new fixtures. For straightforward insulation jobs, your insulation installer can work around current cables. That said, never start insulating until a pro has checked any questionable wiring. If you suspect damaged or outdated circuits, book an electrician first to keep the project—and your home—safe and code-compliant.

Without air sealing, even the best insulation can underperform. Gaps let heated or cooled air leak out, forcing your HVAC system to work harder and driving up energy bills. Sealing those cracks before adding insulation locks in conditioned air, keeps moisture at bay, and helps the new material hit its full R-value. Ask your insulation pro to tackle sealing first so you enjoy consistent comfort and lower monthly costs.

Among readily available options, structural insulated panels and rigid foam boards top the charts with R-values that can reach 8.0. They’re ideal for new construction or very cold climates where maximum thermal resistance matters most. If you live in a milder zone, blown-in or loose-fill insulation may deliver plenty of performance at a lower price. Weigh the upfront cost against energy savings—and lean on a local pro’s guidance—to pick the smartest fit.

The Sylmar, CA homeowners’ guide to attic insulation installations

From average costs to expert advice, get all the answers you need to get your job done.

See all articles