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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon54
    Verified insulation services reviews

Find Insulation pros in Diamond Bar

Avatar for Insulation Labs

Insulation Labs

4.95(
116
)

Insulation Labs

4.95(
116
)
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

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 Everguard Home Insulation Inc.

Everguard Home Insulation Inc.

4.92(
178
)
Approved Pro

Everguard Home Insulation Inc.

4.92(
178
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
1959 years of experience

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 Pacific Coast Termite Inc

Pacific Coast Termite Inc

4.63(
199
)
Approved Pro

Pacific Coast Termite Inc

4.63(
199
)
Approved Pro
Customers say: Super punctual
2007 years of experience
Free onsite estimate

Pacific Coast Termite was formed in 2007 by Co-Owners Dennis Wilson and James Grande. The Company was started in Tustin California, and has expanded to cover the entire state. During this time the company has grown each and every year, propelling Pacific Coast Termite to one of the top termite and pest control Company's in the Nation. We built this company with the goal of helping Californians eliminate termite problems without going through the inconveniences of tent fumigation. Pacific Coast Termite has successfully treated over 20,000 homes, businesses, and commercial properties throughout California. By using Orange Oil and other similar products while our customers stayed home.

"The introductory meeting went very well. The representative, Stephan, was very professional, arrived on time and had a professional appearance. He asked good questions , so to understand the extent of our rodent house mates and wanted to see all areas of the house inside and out. He completed a thorough inspection and educated me with his findings and clearly proposed what his company could do to remove the mice. We signed up and are looking forward to being mouse free!"

Shavon C on August 2020

Pacific Coast Termite was formed in 2007 by Co-Owners Dennis Wilson and James Grande. The Company was started in Tustin California, and has expanded to cover the entire state. During this time the company has grown each and every year, propelling Pacific Coast Termite to one of the top termite and pest control Company's in the Nation. We built this company with the goal of helping Californians eliminate termite problems without going through the inconveniences of tent fumigation. Pacific Coast Termite has successfully treated over 20,000 homes, businesses, and commercial properties throughout California. By using Orange Oil and other similar products while our customers stayed home.

"The introductory meeting went very well. The representative, Stephan, was very professional, arrived on time and had a professional appearance. He asked good questions , so to understand the extent of our rodent house mates and wanted to see all areas of the house inside and out. He completed a thorough inspection and educated me with his findings and clearly proposed what his company could do to remove the mice. We signed up and are looking forward to being mouse free!"

Shavon C on August 2020


Avatar for So Cal Builders & Design Inc

So Cal Builders & Design Inc

4.60(
222
)
Approved Pro

So Cal Builders & Design Inc

4.60(
222
)
Approved Pro
Customers say: Quality work
1982 years of experience
Free onsite estimate

So Cal Builders & Design have been helping the homes throughout California look perfect one nail and brick at a time! With the best prices and highest standard of service, we can deliver the kitchen or bathroom of your dreams on time and on budget! Our staff of trained technicians will build your addition or remodel to your specifications; using only the finest quality materials and the most up-to-date building procedures. We also have in house masonry service as well as perform a number of other services such as plumbing, lighting, painting, patios, and much more. Because we do it all ourselves, we eliminate miscommunication, stress and down time. We don’t use outside contractors or fancy gimmicks to get our customers. We combine new and modern building practices with tried and true hard work to deliver a work of art every time and that is why our customers make us #1. Request Your Free Estimate Voice Star: (888) 284-9122.

"I was hired to assist this business with improving their Yelp profile and successfully helped remove a negative review as requested. After completing the work, the client stopped responding and has not released the agreed payment. I put in full effort and delivered what was promised. I hope they will do the right thing and complete their commitment."

Asjad A on November 2025

So Cal Builders & Design have been helping the homes throughout California look perfect one nail and brick at a time! With the best prices and highest standard of service, we can deliver the kitchen or bathroom of your dreams on time and on budget! Our staff of trained technicians will build your addition or remodel to your specifications; using only the finest quality materials and the most up-to-date building procedures. We also have in house masonry service as well as perform a number of other services such as plumbing, lighting, painting, patios, and much more. Because we do it all ourselves, we eliminate miscommunication, stress and down time. We don’t use outside contractors or fancy gimmicks to get our customers. We combine new and modern building practices with tried and true hard work to deliver a work of art every time and that is why our customers make us #1. Request Your Free Estimate Voice Star: (888) 284-9122.

"I was hired to assist this business with improving their Yelp profile and successfully helped remove a negative review as requested. After completing the work, the client stopped responding and has not released the agreed payment. I put in full effort and delivered what was promised. I hope they will do the right thing and complete their commitment."

Asjad A on November 2025


Avatar for Home Renew 360

Home Renew 360

4.72(
72
)
Approved Pro

Home Renew 360

4.72(
72
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
2010 years of experience

Home Renew 360 is your complete home improvement company. We offer many remodeling services that will help you and your family create the home of your dreams in an efficient, sustainable, healthy manner. Our company has over 30 years of combined experience providing exemplary service to home owners in the greater Southern California area. Home Renew 360 has the expertise and experience to apply our craftsmanship to any size remodeling project. Our goal is to make sure the job is done right and on time.

"Our experience working with Home Renew 360 was amazing! Our project manager Idan Mizrahi was nothing but helpful, knowledgeable, and readily available throughout the process of replacing our roof. He sat down and explained the entire process at length and addressed any of our concerns all the way through to the end of the project. We look forward to working with them for any future home remodeling needs."

Danielle B on March 2025

Home Renew 360 is your complete home improvement company. We offer many remodeling services that will help you and your family create the home of your dreams in an efficient, sustainable, healthy manner. Our company has over 30 years of combined experience providing exemplary service to home owners in the greater Southern California area. Home Renew 360 has the expertise and experience to apply our craftsmanship to any size remodeling project. Our goal is to make sure the job is done right and on time.

"Our experience working with Home Renew 360 was amazing! Our project manager Idan Mizrahi was nothing but helpful, knowledgeable, and readily available throughout the process of replacing our roof. He sat down and explained the entire process at length and addressed any of our concerns all the way through to the end of the project. We look forward to working with them for any future home remodeling needs."

Danielle B on March 2025


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
2022 years of experience

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 Insulation Nation, LLC

Insulation Nation, LLC

5.00(
1
)
Approved Pro

Insulation Nation, LLC

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2023 years of experience

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


"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


"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


Avatar for Fidelity Builders and Design

Fidelity Builders and Design

4.96(
74
)

Fidelity Builders and Design

4.96(
74
)
Customers say: Terrific value
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers

We are fully insured and bonded Home remodeling company. We have been in business for more than 8 years now. We are serving all 3 counties: Los Angeles County Ventura County Orange County. We are not electrical specialist. We are general contractors specializing in room additions, kitchen and bathroom remodeling, much more.

"Tal Mechaly was extremely useful when we hired him and his people to design and rebuild our new kitchen and laundry room. Tal helped us select the new stunning marble slab for the new island that he implemented in the design and the gorgeous chandelier above it because the island that he designed for us included table as well. Tal Mechaly was amazing at selecting all the paint colors combinations and with his design… he was able to pull it all together as one piece of art kitchen. Tal Mechaly was very easygoing person to work with, with excellent creativity skills and his thinking outside of the box ability was beyond believes."

Gilbert V on September 2018

We are fully insured and bonded Home remodeling company. We have been in business for more than 8 years now. We are serving all 3 counties: Los Angeles County Ventura County Orange County. We are not electrical specialist. We are general contractors specializing in room additions, kitchen and bathroom remodeling, much more.

"Tal Mechaly was extremely useful when we hired him and his people to design and rebuild our new kitchen and laundry room. Tal helped us select the new stunning marble slab for the new island that he implemented in the design and the gorgeous chandelier above it because the island that he designed for us included table as well. Tal Mechaly was amazing at selecting all the paint colors combinations and with his design… he was able to pull it all together as one piece of art kitchen. Tal Mechaly was very easygoing person to work with, with excellent creativity skills and his thinking outside of the box ability was beyond believes."

Gilbert V on September 2018

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Insulation questions, answered by experts

The costs range from $1.50 to $4.00 per square foot, depending on the type of insulation, labor, and home size.

STC (Sound Transmission Class) ratings tell you how well something blocks airborne noise. It’s a single number that sums up how much sound a material, like a window, can stop across regular speech frequencies. The higher the number, the better the sound reduction. A typical single-pane window hovers around STC 25 (where you can hear normal conversations), while well-sealed, double-pane options can push past STC 45 (which blocks out loud speech and most music). Just keep in mind that STC doesn’t cover everything—low rumbles like bass or thunder can sneak through—so pairing methods are always ideal for the most peace and quiet.

Just how long insulation lasts depends on the type of insulation you use. Fiberglass can last between 80 and 100 years, but it's important to start checking fiberglass insulation around the 15-year mark. Spray foam also has a long life span of up to 80 years, while mineral wool can last up to 100 years. Although eco-friendly, cellulose only has a lifespan of 20 to 30 years.

Garage door insulation can last anywhere from 20 to 100 years depending on the type of insulation. Cellulose has the shortest lifespan coming in at between 20 and 30 years, while spray foam, mineral wool, and fiberglass can last between 80 and 100 years with proper maintenance. 

Humidity plays a role in how long more susceptible insulation materials—like fiberglass—last. Once fiberglass batts reach the 15-year mark, you'll need to routinely inspect your insulation to ensure that it is in mint order.

A garage ceiling needs a vapor barrier if it’s a heated garage or if you’re installing insulation in the ceiling. Without a vapor barrier, you risk moisture issues and mold growth. If you have an unheated garage and don’t plan on installing insulation that could get wet and harbor mold, the ceiling doesn't need a vapor barrier.

The Diamond Bar, CA homeowners’ guide to insulation services

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