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Find Attic insulation installers in San Jose

Avatar for Insulation Alliance

Insulation Alliance

1880 St Phillip Ct Concord
5.00(
1
)
•Approved Pro

Insulation Alliance

1880 St Phillip Ct Concord
5.00(
1
)
•Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
219 local quotes requested

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

Avatar for Five Star Floors

Five Star Floors

193 LEAVESLEY RD
5.00(
13
)
•Approved Pro

Five Star Floors

193 LEAVESLEY RD
5.00(
13
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
132 local quotes requested

With over 40 years of professional flooring experience, we are here to address your flooring needs. We are a contractor that sells and installs all types of flooring. carpet, laminate, wood, tile, vinyl, bamboo.

"Fast and friendly service and at very affordable prices. Five Star Flooring was a pleasure to work with and will definitely look to them for future services!"

Lisa K on February 2025

With over 40 years of professional flooring experience, we are here to address your flooring needs. We are a contractor that sells and installs all types of flooring. carpet, laminate, wood, tile, vinyl, bamboo.

"Fast and friendly service and at very affordable prices. Five Star Flooring was a pleasure to work with and will definitely look to them for future services!"

Lisa K on February 2025

Avatar for Clark's Hardwood Floors

Clark's Hardwood Floors

251 E Hacienda Ave
4.88(
280
)
•Approved Pro

Clark's Hardwood Floors

251 E Hacienda Ave
4.88(
280
)
•Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
288 local quotes requested

Clark's Hardwood Floors is a Family owned and operated business. We have been installing and refinishing hardwood floors to residential and commercial customers since 1985. We enter our 31st year with an unequaled selection of native and exotic wood species to choose from. Our newly updated showroom is located at 251 E Hacienda Ave Ste A Campbell, CA 95008. Award winning.

"all good."

Weihua W on July 2024

Clark's Hardwood Floors is a Family owned and operated business. We have been installing and refinishing hardwood floors to residential and commercial customers since 1985. We enter our 31st year with an unequaled selection of native and exotic wood species to choose from. Our newly updated showroom is located at 251 E Hacienda Ave Ste A Campbell, CA 95008. Award winning.

"all good."

Weihua W on July 2024

Avatar for Eagle Shield

Eagle Shield

1
4.14(
14
)
•Approved Pro

Eagle Shield

1
4.14(
14
)
•Approved Pro
Customers say: True professional
408 local quotes requested
22 years of experience

Eagle Shield specializes in prioritizing energy upgrades so that homeowners get the biggest bang for their buck. In order to keep heat out of your home’s Attics, Garages, Crawl Spaces, Ducts, Out Buildings and more during the summer season, but keep it inside during winter months, you need quality insulation. Here at Eagle Shield we have three of the very best options available; Reflective or Radiant Barrier insulation, Blown-In, and Laid or Rolled insulation, otherwise known as “Batt and Roll” or “Blanket” insulation. And in each of those three options, we carry the very best quality products. So, why wait? Start saving money and living more comfortably now! Let our Northern California energy solutions experts show you how to optimize your energy usage all year long. Contact us today to get started!

"They did a good job and he's a great guy."

Chauncey W on July 2022

Eagle Shield specializes in prioritizing energy upgrades so that homeowners get the biggest bang for their buck. In order to keep heat out of your home’s Attics, Garages, Crawl Spaces, Ducts, Out Buildings and more during the summer season, but keep it inside during winter months, you need quality insulation. Here at Eagle Shield we have three of the very best options available; Reflective or Radiant Barrier insulation, Blown-In, and Laid or Rolled insulation, otherwise known as “Batt and Roll” or “Blanket” insulation. And in each of those three options, we carry the very best quality products. So, why wait? Start saving money and living more comfortably now! Let our Northern California energy solutions experts show you how to optimize your energy usage all year long. Contact us today to get started!

"They did a good job and he's a great guy."

Chauncey W on July 2022

Avatar for Elephant Floors

Elephant Floors

950 E El Camino Real
5.00(
16
)
•Approved Pro

Elephant Floors

950 E El Camino Real
5.00(
16
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
284 local quotes requested

Elephant Floors brings innovation to Sunnyvale with top-notch flooring solutions, leveraging the latest technology for precision and speed. We’re all about making sure you love your floors, with a personal touch that guarantees satisfaction. Our team’s expertise means you get beautiful, durable floors that match your style, backed by our commitment to excellence. Dive into a stress-free flooring experience with us, where quality and customer happiness are always the priority.

"I can't say enough good things about Elephant Floors. They removed carpet and parquet flooring and installed new hardwood floors in a large space (~1200 square feet) plus a flight of stairs, the entrance way and a closet. The wood is perfectly laid - seamlessly moving among three rooms with long lines. They kept the house really clean and neat, moving my furniture around, so I didn't have to move it. They did this start to finish in 4 days, my friends and neighbors are amazed - lots of excellent feedback..and this includes a contractor, who does this himself. Thank you Daniil, Hector and team, Bravo!"

Helen B on June 2021

Elephant Floors brings innovation to Sunnyvale with top-notch flooring solutions, leveraging the latest technology for precision and speed. We’re all about making sure you love your floors, with a personal touch that guarantees satisfaction. Our team’s expertise means you get beautiful, durable floors that match your style, backed by our commitment to excellence. Dive into a stress-free flooring experience with us, where quality and customer happiness are always the priority.

"I can't say enough good things about Elephant Floors. They removed carpet and parquet flooring and installed new hardwood floors in a large space (~1200 square feet) plus a flight of stairs, the entrance way and a closet. The wood is perfectly laid - seamlessly moving among three rooms with long lines. They kept the house really clean and neat, moving my furniture around, so I didn't have to move it. They did this start to finish in 4 days, my friends and neighbors are amazed - lots of excellent feedback..and this includes a contractor, who does this himself. Thank you Daniil, Hector and team, Bravo!"

Helen B on June 2021

Avatar for Wgallegosflooring

Wgallegosflooring

520 State Street
5.00(
6
)
•Approved Pro

Wgallegosflooring

520 State Street
5.00(
6
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
476 local quotes requested

We do all type of flooring professional guarantee. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Needed shower tiles installed. They did a professional and very efficient job."

Joseph Z on October 2024

We do all type of flooring professional guarantee. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Needed shower tiles installed. They did a professional and very efficient job."

Joseph Z on October 2024

THE HOME DEPOT

2435 LAFAYETTE ST
4.18(
11
)

THE HOME DEPOT

2435 LAFAYETTE ST
4.18(
11
)
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

Banner Residential Rental Maintenance

5.00(
3
)

Banner Residential Rental Maintenance

5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

General housing repairs, rent readies and remodels

General housing repairs, rent readies and remodels

All Phases Electric

4203 Curlew St
4.67(
3
)

All Phases Electric

4203 Curlew St
4.67(
3
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Additional DBAs - Chelsdan Co, The Chelsdan Co.

Additional DBAs - Chelsdan Co, The Chelsdan Co.

Avatar for Z7 Team Powered By First Stop Construction

Z7 Team Powered By First Stop Construction

360 S Buena Vista Ave
4.76(
71
)

Z7 Team Powered By First Stop Construction

360 S Buena Vista Ave
4.76(
71
)
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

Hi, I'm Joe. I'm the General Contractor of the Z7Team. I run my own crew of dependable, loyal workers who love what they do. There's no salesmen, no middleman. Just the crew & I. When you make an appointment with us, you get me at your door, ready to help you with your home remodeling project. I'm hands-on, and come to the job site almost daily to ensure your project is going according to plan. Schedule an appointment today for a free quote!

"My wife and I worked with Joe to renovate our home in the South Bay. We basically tore everything down to the studs and did some reconfiguring of the interior, as well as redoing all plumbing and electrical. With Joe and his team, we transformed a home that hasn’t been renovated since the 60’s to the home of our dreams. We were referred to Joe by a trusted friend, and after a phone call with an overview of what our plans were, we met Joe in person at our home for an initial walkthrough. Both my wife and I were impressed with how thorough he was with details regarding the renovation; it was immediately obvious he was a master of his craft, with a vast amount of experience and knowledge in construction. More importantly, he’s down to earth and honest; his transparency was very much appreciated. Joe and his crew take pride in their work. He’d go above and beyond by suggesting certain looks or practical modifications to our original request; it often felt like he was renovating for himself! For the project, he provided a clearly marked timeline and walked us through all the options for both finished and unfinished materials. His encyclopedic knowledge of stores in the Bay Area saved us a lot of money, and we got exactly what we wanted to build our home with! Home renovation is never a easily forecasted task; there are many surprises or issues that come up. With Joe, we knew we were in good hands. When a challenge did come up, he made sure to explain the options to us and address it immediately. Communication is key in this process, and Joe excels at it - he’s very responsive by phone and text. His crew is polite and also share Joe’s willingness to educate and explain the process. All in all, we felt that Joe became a family friend in the construction business and have recommended him to multiple friends and family. If you are looking for top quality work, reasonable pricing, and a trustworthy expert, look no further than Joe Arielli and his team!"

Kevin H on November 2018

Hi, I'm Joe. I'm the General Contractor of the Z7Team. I run my own crew of dependable, loyal workers who love what they do. There's no salesmen, no middleman. Just the crew & I. When you make an appointment with us, you get me at your door, ready to help you with your home remodeling project. I'm hands-on, and come to the job site almost daily to ensure your project is going according to plan. Schedule an appointment today for a free quote!

"My wife and I worked with Joe to renovate our home in the South Bay. We basically tore everything down to the studs and did some reconfiguring of the interior, as well as redoing all plumbing and electrical. With Joe and his team, we transformed a home that hasn’t been renovated since the 60’s to the home of our dreams. We were referred to Joe by a trusted friend, and after a phone call with an overview of what our plans were, we met Joe in person at our home for an initial walkthrough. Both my wife and I were impressed with how thorough he was with details regarding the renovation; it was immediately obvious he was a master of his craft, with a vast amount of experience and knowledge in construction. More importantly, he’s down to earth and honest; his transparency was very much appreciated. Joe and his crew take pride in their work. He’d go above and beyond by suggesting certain looks or practical modifications to our original request; it often felt like he was renovating for himself! For the project, he provided a clearly marked timeline and walked us through all the options for both finished and unfinished materials. His encyclopedic knowledge of stores in the Bay Area saved us a lot of money, and we got exactly what we wanted to build our home with! Home renovation is never a easily forecasted task; there are many surprises or issues that come up. With Joe, we knew we were in good hands. When a challenge did come up, he made sure to explain the options to us and address it immediately. Communication is key in this process, and Joe excels at it - he’s very responsive by phone and text. His crew is polite and also share Joe’s willingness to educate and explain the process. All in all, we felt that Joe became a family friend in the construction business and have recommended him to multiple friends and family. If you are looking for top quality work, reasonable pricing, and a trustworthy expert, look no further than Joe Arielli and his team!"

Kevin H on November 2018

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FAQs for attic insulation installation projects in San Jose, 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 San Jose, CA homeowners’ guide to attic insulation installations

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

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