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TRUSTED BY KNIGHTSEN, CA HOMEOWNERS
4.5 Average homeowner rating
51 Verified insulation services reviews
Verified Reviews for Insulation Service pros in Knightsen, CA
*The Angi rating for Insulation Service companies in Knightsen, 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 Knightsen, 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 13, 2025
Find Insulation pros in Knightsen
Insulation Alliance
Insulation Alliance
56 local quotes requested
8 years of experience
In Business Since 2017 Insulation Alliance is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Insulation Alliance is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
"When Insulation Alliance came, they were very professional. They laid down plastic everywhere in the hallway and the bedroom. They cleaned out the whole attic. They took out the old insulation and put in the new Insulation which was R 44. They cleaned up everything and everything was clean when they left. They also sanitized the attic. You will not be disappointed that you hired."
Gloria L on January 2024
In Business Since 2017 Insulation Alliance is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Insulation Alliance is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!
"When Insulation Alliance came, they were very professional. They laid down plastic everywhere in the hallway and the bedroom. They cleaned out the whole attic. They took out the old insulation and put in the new Insulation which was R 44. They cleaned up everything and everything was clean when they left. They also sanitized the attic. You will not be disappointed that you hired."
Gloria L on January 2024
AD Insulation
AD Insulation
51 local quotes requested
1 years of experience
We specialize in insulation services. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
We specialize in insulation services. We strive to exceed expectations by delivering exceptional service, great quality work, and professionalism on every job. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!
Attic Cleaning Service
Attic Cleaning Service
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
30 local quotes requested
Transform your living spaces with our Attic Cleaning Services in Oakland, CA. Specializing in insulation installation, duct cleaning, and comprehensive attic solutions. Enhance energy efficiency and indoor air quality with our expert services. We serve in Oakland, CA, Piedmont CA; Albany CA; Orinda CA; Moraga Town CA; El Sobrante CA; and the surrounding areas. Insulation Contractor, Insulation Service, Floor Insulation Installation, Attic Cleaning and Insulation, Insulation Removal and Installation Professional Insulation Installation For more information visit our website: https://insulation-oakland.com/ We also accept the following payment methods: Cash
"Juan and his crew were amazing, they did everything as asked. I wasn't exactly an easy customer as I had a custom layout for my airducts and they knocked it out perfectly within a day when other estimates said 2-3 days and for a fraction of the cost. Started out as a DIY, so I had most of the material and they made it work."
Richard S on August 2024
Transform your living spaces with our Attic Cleaning Services in Oakland, CA. Specializing in insulation installation, duct cleaning, and comprehensive attic solutions. Enhance energy efficiency and indoor air quality with our expert services. We serve in Oakland, CA, Piedmont CA; Albany CA; Orinda CA; Moraga Town CA; El Sobrante CA; and the surrounding areas. Insulation Contractor, Insulation Service, Floor Insulation Installation, Attic Cleaning and Insulation, Insulation Removal and Installation Professional Insulation Installation For more information visit our website: https://insulation-oakland.com/ We also accept the following payment methods: Cash
"Juan and his crew were amazing, they did everything as asked. I wasn't exactly an easy customer as I had a custom layout for my airducts and they knocked it out perfectly within a day when other estimates said 2-3 days and for a fraction of the cost. Started out as a DIY, so I had most of the material and they made it work."
Richard S on August 2024
American Attics
American Attics
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
32 local quotes requested
The business specializes in providing insulation solutions aimed at optimizing energy efficiency for residential properties. We offer a range of insulation products and services tailored to different types of homes and climates, helping homeowners reduce energy consumption and lower utility bills while enhancing comfort and sustainability.
"The work was performed to my satisfaction. The Sam and the crew arrived on time and explained what was going to happen. The crew prepared the house to minimize any dust and went to work. The job was completed in two days. There were a couple of issues during the job, which were addressed in a timely manner. Overall, I am very happy with the work and would recommend American Attics."
Jeff L on June 2024
The business specializes in providing insulation solutions aimed at optimizing energy efficiency for residential properties. We offer a range of insulation products and services tailored to different types of homes and climates, helping homeowners reduce energy consumption and lower utility bills while enhancing comfort and sustainability.
"The work was performed to my satisfaction. The Sam and the crew arrived on time and explained what was going to happen. The crew prepared the house to minimize any dust and went to work. The job was completed in two days. There were a couple of issues during the job, which were addressed in a timely manner. Overall, I am very happy with the work and would recommend American Attics."
Jeff L on June 2024
Attic kings
Attic kings
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
35 local quotes requested
Our company specializes attic/crawl space clean up mice/rodents proofing ,insulation removal, insulation installation, vapor barrier, radiant barrier, sanitation, air duct repair and replacement, air sealing. We usually doing Free inspection before work
"Moshe and his team at Attic Kings are amazing! When I contacted them, they got back to me almost immediately with a date and time for an estimate to install insulation. Moshe was very communicative, texting and calling to let me know when he would arrive. On installation day, Moshe made sure to keep everything as clean as possible, and everything went incredibly well. They are all so kind--would definitely hire again!"
Liz S on September 2022
Our company specializes attic/crawl space clean up mice/rodents proofing ,insulation removal, insulation installation, vapor barrier, radiant barrier, sanitation, air duct repair and replacement, air sealing. We usually doing Free inspection before work
"Moshe and his team at Attic Kings are amazing! When I contacted them, they got back to me almost immediately with a date and time for an estimate to install insulation. Moshe was very communicative, texting and calling to let me know when he would arrive. On installation day, Moshe made sure to keep everything as clean as possible, and everything went incredibly well. They are all so kind--would definitely hire again!"
Liz S on September 2022
Beltran Acoustics
Beltran Acoustics
Our acoustical ceilings business specializes in professional installation, repair, and maintenance services for commercial and residential properties. We enhance interior spaces by improving sound quality, reducing noise, and enhancing aesthetics with high-quality acoustic tiles, panels, and insulation. our skilled team ensures excellent craftsmanship and customer satisfaction, making us a trusted choice for acoustical ceiling solutions.
Our acoustical ceilings business specializes in professional installation, repair, and maintenance services for commercial and residential properties. We enhance interior spaces by improving sound quality, reducing noise, and enhancing aesthetics with high-quality acoustic tiles, panels, and insulation. our skilled team ensures excellent craftsmanship and customer satisfaction, making us a trusted choice for acoustical ceiling solutions.
G&M handyman services
G&M handyman services
5 years of experience
Veteran owner and operator with the ability to design draft build and repair most issues with current built structure Albility to do plumbing electrical concrete framing roofing siding decks solar, fencing and custom built rod iron gates Can design and draft up blueprints and 3d models for remodeling and renevoations
Veteran owner and operator with the ability to design draft build and repair most issues with current built structure Albility to do plumbing electrical concrete framing roofing siding decks solar, fencing and custom built rod iron gates Can design and draft up blueprints and 3d models for remodeling and renevoations
Advanced Tech 209 INC
Advanced Tech 209 INC
Free onsite estimate
We do heating and a/c repair and replacement residential and commercial. We are 24 hour service and provide fair and quality prices. we have been in business for a year both owners have been doing Heating and Air for over 26 years.
We do heating and a/c repair and replacement residential and commercial. We are 24 hour service and provide fair and quality prices. we have been in business for a year both owners have been doing Heating and Air for over 26 years.
Bright Home Energy Services
Bright Home Energy Services
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
Bright Home Energy Services is a green energy contractor proudly serving the greater Sacramento area. We specialize in energy efficient home improvement projects and whole home design including asphalt roofing, metal roofing, ventilation, solar panels, heating and air conditioning repair and replacment, insulation, window replacement and water heating/plumbing repair and replacement. If you are wondering how you can save more in your home, we also offer a home energy audit which will take a look at everything with energy savings and home improvement in mind. We have many options and the tools to get your job done right the first time and within your budget. All inspections and replacement consultations are FREE, just contact us and find out how we can help today.
"There Services were excellent. They kept in me in the loop. There was a glitch on the equipment on the first day of installation, but it was resolved on the next day. Now, I am feeling much cooler. I recommend this business for your cooling and heating needs. Thank you"
William D on August 2022
Bright Home Energy Services is a green energy contractor proudly serving the greater Sacramento area. We specialize in energy efficient home improvement projects and whole home design including asphalt roofing, metal roofing, ventilation, solar panels, heating and air conditioning repair and replacment, insulation, window replacement and water heating/plumbing repair and replacement. If you are wondering how you can save more in your home, we also offer a home energy audit which will take a look at everything with energy savings and home improvement in mind. We have many options and the tools to get your job done right the first time and within your budget. All inspections and replacement consultations are FREE, just contact us and find out how we can help today.
"There Services were excellent. They kept in me in the loop. There was a glitch on the equipment on the first day of installation, but it was resolved on the next day. Now, I am feeling much cooler. I recommend this business for your cooling and heating needs. Thank you"
William D on August 2022
Trioteam LLC
Trioteam LLC
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
Trioteam is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business
"Excellent service!! Professional, on-time, respectful, got right to work, finished in shorter time than estimated. Exceptionally clean, used floor/wall coverings, had covers on shoes, vacuumed. Took pictures of before and after. Cleaned out my attic, sanitized, sealed air leaks, replaced insulation, and sealed all squirrel access holes. Written estimate with all parts of the job listed. No hidden costs or estimate revisions. The whole team wore masks. Why do I love this company and hire them again? I get to sleep tonight without hearing the squirrels tearing up my attic. Well done gentlemen!!"
Cynthia J on February 2021
Trioteam is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business
"Excellent service!! Professional, on-time, respectful, got right to work, finished in shorter time than estimated. Exceptionally clean, used floor/wall coverings, had covers on shoes, vacuumed. Took pictures of before and after. Cleaned out my attic, sanitized, sealed air leaks, replaced insulation, and sealed all squirrel access holes. Written estimate with all parts of the job listed. No hidden costs or estimate revisions. The whole team wore masks. Why do I love this company and hire them again? I get to sleep tonight without hearing the squirrels tearing up my attic. Well done gentlemen!!"
Cynthia J on February 2021
FAQs for insulation service projects in Knightsen, 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 Knightsen, 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.
Trying to calculate how much spray foam insulation costs? Our in-depth guide breaks down pricing by type, amount, and where you install it.
Crawl space insulation costs vary by size, insulation type, and material. Read this guide to learn how much your crawl space insulation could cost.
What is a radiant barrier? This reflective building material is designed to reduce heat transfer and save you money on energy costs.
Spray foam insulation versus fiberglass—how do you choose? Compare the cost, durability, R-value, and more to pick the right one.
How much does insulation save on energy bills? It depends on where you live and the type of insulation you install.
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