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Find Attic insulation installers in Norwalk

Avatar for Guardian Home Energy

Guardian Home Energy

Santa Ana, CA 92705
5.00(
6
)
•Approved Pro

Guardian Home Energy

Santa Ana, CA 92705
5.00(
6
)
•Approved Pro
Customers say: Quick response
67 local quotes requested
13 years of experience

Whole Home Energy Efficiency Weatherization and Insulation Company. We specialize in insulating and sealing houses to create drastic comfort, health and savings differences. We specialize in Comprehensive Home Energy Audits, Attic Clean Outs, Attic/ interior Air-Sealing, Attic Insulation, Attic Ventilation, Radiant Barrier, Whole House Fans, Duct Replacement, Duct Sealing, Drill and Fill Wall Insulation with Full Texture and Paint Match, Crawlspace Insulation/ Vapor Barriers.

"This was the best experience with this company. Katherine was very professional And knowledgeable. The team that showed up to install the installation did a wonderful job. Calvin came back the following week and touched up the wall. Calvin was very professional. I appreciate all the work they did. I can already tell a difference with the air conditioning. Can't wait to experience this winter. And the noise level. Between my condo and the other condo was decreased by the insulation in the wall. I will recommend them to anyone that asked me about Installation."

Carol A on September 2025

Whole Home Energy Efficiency Weatherization and Insulation Company. We specialize in insulating and sealing houses to create drastic comfort, health and savings differences. We specialize in Comprehensive Home Energy Audits, Attic Clean Outs, Attic/ interior Air-Sealing, Attic Insulation, Attic Ventilation, Radiant Barrier, Whole House Fans, Duct Replacement, Duct Sealing, Drill and Fill Wall Insulation with Full Texture and Paint Match, Crawlspace Insulation/ Vapor Barriers.

"This was the best experience with this company. Katherine was very professional And knowledgeable. The team that showed up to install the installation did a wonderful job. Calvin came back the following week and touched up the wall. Calvin was very professional. I appreciate all the work they did. I can already tell a difference with the air conditioning. Can't wait to experience this winter. And the noise level. Between my condo and the other condo was decreased by the insulation in the wall. I will recommend them to anyone that asked me about Installation."

Carol A on September 2025

Avatar for Green Flag Flooring & Construction

Green Flag Flooring & Construction

2612 S Croddy Way
4.78(
36
)
•Approved Pro

Green Flag Flooring & Construction

2612 S Croddy Way
4.78(
36
)
•Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
353 local quotes requested

Green Flag Flooring specializes in all types of RESIDENTIAL FLOORING. For an immediate response to all of your flooring needs, call Mark (Owner) @ 949-533-5747

"From start to finish, my experience with GF was absolutely fantastic. They took the time to understand my vision for the project and offered valuable advice on materials, design options, and budget considerations. Communication was clear and responsive throughout the entire process, which gave me confidence that I was in good hands. The team was punctual, professional, and highly skilled. They took great care to protect my home during the construction, minimizing any disruption to my daily life. The quality of work was impeccable, and they stayed within the agreed timeline and budget. The final result was a beautiful transformation of my living space that exceeded my expectations. I would highly recommend GF for any remodeling job—their dedication to customer satisfaction, attention to detail, and craftsmanship are truly exceptional."

mahsid v on September 2025

Green Flag Flooring specializes in all types of RESIDENTIAL FLOORING. For an immediate response to all of your flooring needs, call Mark (Owner) @ 949-533-5747

"From start to finish, my experience with GF was absolutely fantastic. They took the time to understand my vision for the project and offered valuable advice on materials, design options, and budget considerations. Communication was clear and responsive throughout the entire process, which gave me confidence that I was in good hands. The team was punctual, professional, and highly skilled. They took great care to protect my home during the construction, minimizing any disruption to my daily life. The quality of work was impeccable, and they stayed within the agreed timeline and budget. The final result was a beautiful transformation of my living space that exceeded my expectations. I would highly recommend GF for any remodeling job—their dedication to customer satisfaction, attention to detail, and craftsmanship are truly exceptional."

mahsid v on September 2025

Avatar for Insulation Nation, LLC

Insulation Nation, LLC

25 Pacifica
5.00(
1
)
•Approved Pro

Insulation Nation, LLC

25 Pacifica
5.00(
1
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
205 local quotes requested

Hi there from Dustin, owner of Insulation Nation! Here in So Cal, we join our Colorado office in providing personalized high touch experiences for our customers. I work with our customers directly every step of the way from evaluation, education and review of options, through the project and to inspection of the results. We've never seen less than a 5 star review. Small businesses live and die by reviews and we are ready to earn 5 stars on your project! Thank you! C-02 Insulation and Acoustic #: 1127373 EXP: 10/31/2026

"We had Insulation Nation (Dustin) come to our house to look at our attis insulation; our house was built in the late 70's and I had added more blown-in insulation many years ago. We decided on adding 8" of blown-in insulation to reduce our heating/cooling cost and to reduce the cycling of our HVAC system. They did a wonderful job of sealing any attic leaks, covers for our canned lighting fixtures, built a dam around our whole house fan, added baffles around our soffits, and added the insulation. Nicely done and a professional job. Would recommend using their service."

Robert S on February 2025

Hi there from Dustin, owner of Insulation Nation! Here in So Cal, we join our Colorado office in providing personalized high touch experiences for our customers. I work with our customers directly every step of the way from evaluation, education and review of options, through the project and to inspection of the results. We've never seen less than a 5 star review. Small businesses live and die by reviews and we are ready to earn 5 stars on your project! Thank you! C-02 Insulation and Acoustic #: 1127373 EXP: 10/31/2026

"We had Insulation Nation (Dustin) come to our house to look at our attis insulation; our house was built in the late 70's and I had added more blown-in insulation many years ago. We decided on adding 8" of blown-in insulation to reduce our heating/cooling cost and to reduce the cycling of our HVAC system. They did a wonderful job of sealing any attic leaks, covers for our canned lighting fixtures, built a dam around our whole house fan, added baffles around our soffits, and added the insulation. Nicely done and a professional job. Would recommend using their service."

Robert S on February 2025

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
2016 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 Dodenhoff Hardwood Floors Inc.

Dodenhoff Hardwood Floors Inc.

406 East Grand Avenue
4.75(
8
)
•Approved Pro

Dodenhoff Hardwood Floors Inc.

406 East Grand Avenue
4.75(
8
)
•Approved Pro
Customers say: Quick response
74 local quotes requested
23 years of experience

We are a full service hardwood flooring corporation. We employ National Wood Flooring Association trained technicians using state of the art equipment and techniques. We have been featured on two hit television shows ,Greenovate on the Planet Green network and Flip that house on DIY network. We provide free in home estimates with many samples of different styles, colors and patterns. Also offering many eco-friendly flooring options such as reclaimed timbers, mill by-products (recycled) and low or no VOC finishes

"I had my entire home removed of old hardware floors, with new sub flooring, hardwood floors installed . All done and completed as promised . They look beautiful. Thank you Ian for beautifying my home. I would highly recommend Dodenhoff hardwood floors."

Debbie R on October 2023

We are a full service hardwood flooring corporation. We employ National Wood Flooring Association trained technicians using state of the art equipment and techniques. We have been featured on two hit television shows ,Greenovate on the Planet Green network and Flip that house on DIY network. We provide free in home estimates with many samples of different styles, colors and patterns. Also offering many eco-friendly flooring options such as reclaimed timbers, mill by-products (recycled) and low or no VOC finishes

"I had my entire home removed of old hardware floors, with new sub flooring, hardwood floors installed . All done and completed as promised . They look beautiful. Thank you Ian for beautifying my home. I would highly recommend Dodenhoff hardwood floors."

Debbie R on October 2023

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
311 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.

"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

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
404 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 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
495 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!

"I hire Attic Insulation Labs to replace 6 air ducts, remove old insulation, rodent proof, air leak seal and sanitize my attic. They were so professional about everything they did that I already recommended them to two of my colleagues and they have already completed working on their attics as well. Their came in with a crew if 5 men, got to my house right on time, brought their professional attic cleaning equipment and were all nice and polite. Pastor, the foreman, gave me a brief of what they are about to do and vanished into my attic. A few hours later he showed me the clean attic, if was as clean as one would expect an old attic to be, and it didn't smell at all as bad as it did before the cleaning. A few more hours later and the attic was covered with a beautiful blanket of insulation batts. I can't be happier with their service, they really did a great job all around and deserve the good feedback."

Mike A on April 2019

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!

"I hire Attic Insulation Labs to replace 6 air ducts, remove old insulation, rodent proof, air leak seal and sanitize my attic. They were so professional about everything they did that I already recommended them to two of my colleagues and they have already completed working on their attics as well. Their came in with a crew if 5 men, got to my house right on time, brought their professional attic cleaning equipment and were all nice and polite. Pastor, the foreman, gave me a brief of what they are about to do and vanished into my attic. A few hours later he showed me the clean attic, if was as clean as one would expect an old attic to be, and it didn't smell at all as bad as it did before the cleaning. A few more hours later and the attic was covered with a beautiful blanket of insulation batts. I can't be happier with their service, they really did a great job all around and deserve the good feedback."

Mike A on April 2019

Avatar for Josue E Guevara

Josue E Guevara

1412 Lomita Blvd
4.74(
27
)
•Approved Pro

Josue E Guevara

1412 Lomita Blvd
4.74(
27
)
•Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
119 local quotes requested

General Contractor specializing in interior and exterior remodeling . We focus on quality work above all, contact owner operator Josue for an estimate today! 310-984-9456

"Josue and his team were a breath of fresh air: timely, great communication, excellent work and follow through. Reasonably priced for high quality work. Hope to bring him back for more projects in the future."

David F on September 2025

General Contractor specializing in interior and exterior remodeling . We focus on quality work above all, contact owner operator Josue for an estimate today! 310-984-9456

"Josue and his team were a breath of fresh air: timely, great communication, excellent work and follow through. Reasonably priced for high quality work. Hope to bring him back for more projects in the future."

David F on September 2025

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
876 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

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FAQs for attic insulation installation projects in Norwalk, 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 Norwalk, 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