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Verified Reviews for Insulation Service pros in Mililani, HI

*The Angi rating for Insulation Service companies in Mililani, HI 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 Mililani, HI 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 November 25, 2025

Find Insulation pros in Mililani

Avatar for H Drywall, LLC

H Drywall, LLC

4.98(
64
)
•Approved Pro

H Drywall, LLC

4.98(
64
)
•Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
179 local quotes requested

I have over 30 years experience in my trade, in business for over 20 of those years. Check are accepted. Time and material is available as well. 1099's accepted for tax purposes. I have insurance up to $1,000,000 for property damage. Lic # C-35480

"Harry was very communicative and his team was great. They showed up on time, did a great job and finished before the estimated time! They even stayed around for the walk through to make any needed touch ups. It was a little pricey but you pay for what you get. Would recommend for all your painting needs. "

Ashly S on November 2025

I have over 30 years experience in my trade, in business for over 20 of those years. Check are accepted. Time and material is available as well. 1099's accepted for tax purposes. I have insurance up to $1,000,000 for property damage. Lic # C-35480

"Harry was very communicative and his team was great. They showed up on time, did a great job and finished before the estimated time! They even stayed around for the walk through to make any needed touch ups. It was a little pricey but you pay for what you get. Would recommend for all your painting needs. "

Ashly S on November 2025

Avatar for Tasha & Richard quality insulation

Tasha & Richard quality insulation

No reviews yet

Tasha & Richard quality insulation

No reviews yet
19 years of experience

I am capable of finishing jobs with quality work ethics. My accountability is number one when it comes to my customers services. My quality and reliability for customers is reasonable.

I am capable of finishing jobs with quality work ethics. My accountability is number one when it comes to my customers services. My quality and reliability for customers is reasonable.

Avatar for NS Air Conditioning Inc

NS Air Conditioning Inc

5.00(
4
)

NS Air Conditioning Inc

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We specialize in residential and commercial Ventilation and Air Conditioning services, repairs, & installation. Call or click for your quote today!

"Recently installed an AC system on a property. NS Air is very reasonable and very professional. I highly recommend this company. They do outstanding work."

Keoki K on March 2024

We specialize in residential and commercial Ventilation and Air Conditioning services, repairs, & installation. Call or click for your quote today!

"Recently installed an AC system on a property. NS Air is very reasonable and very professional. I highly recommend this company. They do outstanding work."

Keoki K on March 2024

Avatar for Building Science LLC

Building Science LLC

5.00(
6
)

Building Science LLC

5.00(
6
)
Customers say: Super punctual
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Thanks for visiting our page! We are happy to help with your home project. ABOUT US: At Building Science LLC, our goal is to not only help you build your dream home or renovate your property, but to make the process easy for you. We are a full-service design/build company with a wide range of experience. We can help you with all phases of new home construction or remodeling. We believe the whole house matters and deliver on all phases and components of a project. Our excellent reputation and long list of satisfied clients attest to our superior craftsmanship, attention to detail, clear communication, honesty and integrity. Just ask for our client reference list. Let's discuss your ideas! Check us out on facebook at https://www.facebook.com/BuildingSciencellc/ and also our website at http://buildingsciencehawaii.com

Thanks for visiting our page! We are happy to help with your home project. ABOUT US: At Building Science LLC, our goal is to not only help you build your dream home or renovate your property, but to make the process easy for you. We are a full-service design/build company with a wide range of experience. We can help you with all phases of new home construction or remodeling. We believe the whole house matters and deliver on all phases and components of a project. Our excellent reputation and long list of satisfied clients attest to our superior craftsmanship, attention to detail, clear communication, honesty and integrity. Just ask for our client reference list. Let's discuss your ideas! Check us out on facebook at https://www.facebook.com/BuildingSciencellc/ and also our website at http://buildingsciencehawaii.com

Solar Wolf Energy

2.00(
2
)

Solar Wolf Energy

2.00(
2
)
10 years of experience

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!

Avatar for Building Energy Group

Building Energy Group

No reviews yet

Building Energy Group

No reviews yet
26 years of experience

Skylights and Solar Hot Water sales, service and installation. Building Energy Group is on the Hawaii Energy approved list of installers and is a Velux 5-star approved installation company.

Skylights and Solar Hot Water sales, service and installation. Building Energy Group is on the Hawaii Energy approved list of installers and is a Velux 5-star approved installation company.

ECO Construction services

No reviews yet

ECO Construction services

No reviews yet
26 years of experience

SR Construction- With 20 years experience fully tooled, I offer Carpentry, Contracting & Project Management services. General Contracting with history of building rapport & references from colleagues. I have knowledge and skill in the areas of project evaluation & design, proposals, contracts. I am well versed in proper application of state codes. Strong on island references are available by request.

SR Construction- With 20 years experience fully tooled, I offer Carpentry, Contracting & Project Management services. General Contracting with history of building rapport & references from colleagues. I have knowledge and skill in the areas of project evaluation & design, proposals, contracts. I am well versed in proper application of state codes. Strong on island references are available by request.

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Insulation questions, answered by experts

In most cases, the building code in your location will determine the minimum amount, in R-value, required for your home's walls, attic, and other spaces. For attics, the minimum R-value amounts start at R30 in the south, R38 in mild climate locations, and R49 in northern states and cold western areas.

Unfaced wall insulation is easier to cut and install, making it the better choice for a DIY project. It’s also more affordable. But if it’s unfaced, you’ll likely need to add a vapor barrier to reach your desired R-value and efficiency, as it doesn’t offer any moisture barrier.

Faced insulation uses paper or foil to create a built-in barrier and doesn’t require an extra step. It’s also more fire-resistant and safe. But it’s quite a bit more expensive and a little bit harder to work with as a DIYer.

Costs depend on insulation material, labor, accessibility, and whether existing insulation requires removal.

Installing sheets of plywood over attic insulation is a popular choice, especially in storage spaces. That said, insulation works by trapping hot air—so it needs extra space to expand and be effective, or you might reduce the energy efficiency of your home. 

It’s important that you never compress the insulation by installing flooring directly on top of it. In many houses, you’ll need to install a subfloor before putting plywood over insulation in your attic.

In some areas, insulation companies require a special license, while some states only require them to hold general contractor licenses. Some municipalities may not mandate any license, although you should always ensure a contractor is fully insured. You can use Angi’s license lookup tool to confirm whether or not an insulation contractor you’re considering holds the necessary license for your area. You can also contact the company for information regarding licenses, certifications, and insurance.

The Mililani, HI homeowners’ guide to insulation services

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

See all articles