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TRUSTED BY DIAMOND BAR, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon145
    Verified drywall insulation services reviews

Find Drywall insulation pros in Diamond Bar

"They were very knowledgeable, quick and courteous."

Marilyn H on June 2025

Thor McAndrew Construction is a family owned and operated business since 1998. We pride ourselves in providing prompt and couteous service to all of our customers. We are licensed and insured and provide free estimates.

"They were very knowledgeable, quick and courteous."

Marilyn H on June 2025


"Showed up on time, completed the repairs quickly and efficiently, and didn't leave any mess."

Thomas S on May 2025

Fully licensed and bonded. Owner does all the work by himself and has more than 25 years experience. Award winning. Specializing in Drywall and Stucco Repair and matching textures.

"Showed up on time, completed the repairs quickly and efficiently, and didn't leave any mess."

Thomas S on May 2025


Avatar for Everguard Home Insulation Inc.

Everguard Home Insulation Inc.

23450 Collins Street
4.92(
178
)
Approved Pro

Everguard Home Insulation Inc.

23450 Collins Street
4.92(
178
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
63 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 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
57 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


"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 Labs

Insulation Labs

7023 Valjean Ave
4.95(
116
)
Approved Pro

Insulation Labs

7023 Valjean Ave
4.95(
116
)
Approved Pro
Customers say: Super punctual
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
76 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 Caliber Drywall

Caliber Drywall

12365 Mills Avenue, Suite 20
4.66(
143
)
Approved Pro

Caliber Drywall

12365 Mills Avenue, Suite 20
4.66(
143
)
Approved Pro
Customers say: True professional
94 local quotes requested
21 years of experience

We are locally owned and operated company serving the Inland Empire, Orange County, and some parts of L.A county CA and surrounding communities. Caliber Drywall offers quality workmanship, with reasonable rates and friendly customer service to all of our clients. For your next drywall project, installation or repair, call Caliber Drywall. We are fully licensed and insured. Call us now!

"Ken was great and professional. His team got the job done the way I imagined. He kept me updated throughout construction. My ceiling has never looked better. "

Matias F on September 2025

We are locally owned and operated company serving the Inland Empire, Orange County, and some parts of L.A county CA and surrounding communities. Caliber Drywall offers quality workmanship, with reasonable rates and friendly customer service to all of our clients. For your next drywall project, installation or repair, call Caliber Drywall. We are fully licensed and insured. Call us now!

"Ken was great and professional. His team got the job done the way I imagined. He kept me updated throughout construction. My ceiling has never looked better. "

Matias F on September 2025


Avatar for A J M Construction

A J M Construction

7832 Davmor Avenue
4.89(
98
)
Approved Pro

A J M Construction

7832 Davmor Avenue
4.89(
98
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
13 local quotes requested

Welcome to A J M Construction! Proudly servicing Los Angeles and the surrounding areas. We take great pride in our professionalism and customer satisfaction. We specialize in all your drywall needs and no job is too big or too small for us. For fast, reliable, and efficient service give us a call today.

"Arturo was very responsive and easy to communicate with. He provided updates and finished right on schedule with the timeline he provided. He and Oscar did great work and left the areas they worked on very clean. We added on an extra project at the end and Arturo found a way to get it done for us before we moved into the house. Highly recommend Arturo and his team. "

Elisabeth H on September 2025

Welcome to A J M Construction! Proudly servicing Los Angeles and the surrounding areas. We take great pride in our professionalism and customer satisfaction. We specialize in all your drywall needs and no job is too big or too small for us. For fast, reliable, and efficient service give us a call today.

"Arturo was very responsive and easy to communicate with. He provided updates and finished right on schedule with the timeline he provided. He and Oscar did great work and left the areas they worked on very clean. We added on an extra project at the end and Arturo found a way to get it done for us before we moved into the house. Highly recommend Arturo and his team. "

Elisabeth H on September 2025


Avatar for System 1 Acoustic Ceiling Removal

System 1 Acoustic Ceiling Removal

4195 Chino Hills Parkway
4.88(
140
)
Approved Pro

System 1 Acoustic Ceiling Removal

4195 Chino Hills Parkway
4.88(
140
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
456 local quotes requested

Using state of the art equipment, our highly skilled staff can remove your old popcorn ceilings in a day or less with no mess. We use the highest grade of materials possible, and we offer many textures to choose from. Our estimators bring texture and paint samples to your home, so you can see the quality of the work yourself. In addition, we also specialize in wall texturing, dry wall, and full interior and exterior painting.

"Job was completed quickly and looks great. Richard was friendly and professional in setting up the appointment, coming out for the estimate and squeezing my project in quickly. His serviceman was on time, professional, and did an amazing job. He left the place spotless after completing the project. Would recommend and use again."

Heather R on June 2023

Using state of the art equipment, our highly skilled staff can remove your old popcorn ceilings in a day or less with no mess. We use the highest grade of materials possible, and we offer many textures to choose from. Our estimators bring texture and paint samples to your home, so you can see the quality of the work yourself. In addition, we also specialize in wall texturing, dry wall, and full interior and exterior painting.

"Job was completed quickly and looks great. Richard was friendly and professional in setting up the appointment, coming out for the estimate and squeezing my project in quickly. His serviceman was on time, professional, and did an amazing job. He left the place spotless after completing the project. Would recommend and use again."

Heather R on June 2023


Avatar for Neri The Painter

Neri The Painter

2226 S. Rene Dr
No reviews yet

Neri The Painter

2226 S. Rene Dr
No reviews yet
14 years of experience

We strive to provide great quality work with honesty and professionalism. We believe in 100% customer satisfaction. We specialize in interior & exterior paint finishes such as cabinet resurfacing, wall painting, stains, drywall and stucco repair. We believe on in person consults so that you always know your talking to someone real and that helps us build a relationship. Lastly, we want to make sure you feel comfortable if you may have any questions that will be there to answer them.

We strive to provide great quality work with honesty and professionalism. We believe in 100% customer satisfaction. We specialize in interior & exterior paint finishes such as cabinet resurfacing, wall painting, stains, drywall and stucco repair. We believe on in person consults so that you always know your talking to someone real and that helps us build a relationship. Lastly, we want to make sure you feel comfortable if you may have any questions that will be there to answer them.

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Drywall Insulation questions, answered by experts

Depending on the size, insulation condition, and removal method, it can take anywhere from four hours up to twenty hours. Therefore, be prepared to split the projects into phases, or leave it to a professional. Insulation is an intermediate project with various risk factors and can be challenging to someone unfamiliar with the process.

The primary downside of radiant barriers is their limited effectiveness in cold climates. They are designed to reflect radiant heat, making them less beneficial in cooler conditions where heat retention is more important. 

Radiant barriers require proper installation to maximize effectiveness. Incorrect placement can lead to minimal benefits. They also do not provide insulation, meaning they should be used in conjunction with traditional insulation for optimal energy efficiency. 

Plaster itself has a higher R-value than drywall. However, there are other considerations surrounding plaster and insulation. As a general rule, it's easier to obtain consistency in insulating value and quality when working with drywall rather than plaster. Plaster walls often don't contain any insulation behind the wall covering by design, and careful evaluation is necessary when choosing to add it.

While there are many different kinds of insulation, spray foam, blown-in, foam board, and batt and roll are the four types you’re most likely to see. That doesn’t mean they’re alike, though. Each one varies drastically in terms of cost, materials used, and how they’re installed—not to mention, how well they limit heat transfer.

Expect your home insulation project to take between five and 12 hours to complete on average for batts or boards and two to five hours for spray foam or blown-in insulation. It might take longer if you need to remove your home’s existing insulation, you have a higher-than-average square footage, or accessibility is limited.

The Diamond Bar, CA homeowners’ guide to drywall insulation services

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