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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon72
    Verified insulation services reviews

Find Insulation pros in Andover

"I recently hired Sebastian and his company to install new fiberglass insulation and Densepack in my attic. I found them to be extremely professional. They did the work as quoted, cleaned up after they were done and took all the trash away. I would highly recommend them."

Gail S on July 2025

Jersey State provides insulations such as: closed/open cell insulation, blown in insulation, sound and firestop insulation. We also retrofit houses for green and comfort energy. Family owned and operated. Business experience 15 years plus

"I recently hired Sebastian and his company to install new fiberglass insulation and Densepack in my attic. I found them to be extremely professional. They did the work as quoted, cleaned up after they were done and took all the trash away. I would highly recommend them."

Gail S on July 2025


ARG SOLUTIONS ON TIME

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ARG SOLUTIONS ON TIME

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Family-owned company with skilled HVAC Service Technician with 15+ years of experience in maintaining and preparing customer heating and cooling systems. Customer and safety-oriented professional able to handle heavy workloads and deliver high-quality installations and repairs.

Family-owned company with skilled HVAC Service Technician with 15+ years of experience in maintaining and preparing customer heating and cooling systems. Customer and safety-oriented professional able to handle heavy workloads and deliver high-quality installations and repairs.


"Absolutely 10/10 would recommend and use again! He answered in reasonable time, walked us through everything he was going to do / needed to be done, on time, and priced great! Everything came out amazing!"

Amanda M on March 2024

General contractor specializing in remodels from start to finish. Whether you are looking for an addition, bathroom remodel or someone to help tackle your honey do lists we have got you covered.

"Absolutely 10/10 would recommend and use again! He answered in reasonable time, walked us through everything he was going to do / needed to be done, on time, and priced great! Everything came out amazing!"

Amanda M on March 2024


M6 Builders LLC

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M6 Builders LLC

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Free onsite estimate

Premium commercial & residential builders. Building & Carpentry Services including Trims, Drywall, Framing, Insulation, Wall & Floors, Ceilings, Demolition, Doors, Painting & More! Minority Owned Fully Licensed & Insured OSHA 30+

Premium commercial & residential builders. Building & Carpentry Services including Trims, Drywall, Framing, Insulation, Wall & Floors, Ceilings, Demolition, Doors, Painting & More! Minority Owned Fully Licensed & Insured OSHA 30+


Avatar for Home Genius Exteriors

Home Genius Exteriors

4.55(
47
)

Home Genius Exteriors

4.55(
47
)
Customers say: Super punctual
743 local quotes requested

Elevate your home with Home Genius Exteriors, setting the standard in New Jersey by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It’s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

"Hired the team for the roof! Would recommend, Fred was awesome!"

Chris R on October 2025

Elevate your home with Home Genius Exteriors, setting the standard in New Jersey by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It’s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

"Hired the team for the roof! Would recommend, Fred was awesome!"

Chris R on October 2025


Pentagon Custom Building

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Pentagon Custom Building

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11 years of experience

Pentagon Custom Building is a pet-friendly Company with a trustworthy people. When we start a project we finish and meet our client's expectation- provides 100% satisfaction guarantee. License and Insured company so clients are all covered. Sums up to 100% Reliable Roofing Service, Remodeling Service, Kitchen Remodeling, Bathroom Remodeling, Flooring, Framing, Plumbing, Electrical, Drywall, Carpentry West Grove NJ;

Pentagon Custom Building is a pet-friendly Company with a trustworthy people. When we start a project we finish and meet our client's expectation- provides 100% satisfaction guarantee. License and Insured company so clients are all covered. Sums up to 100% Reliable Roofing Service, Remodeling Service, Kitchen Remodeling, Bathroom Remodeling, Flooring, Framing, Plumbing, Electrical, Drywall, Carpentry West Grove NJ;


Contractor Sandoval Carpentry & Painting

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Contractor Sandoval Carpentry & Painting

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23 years of experience

Our business is ran by the boss Atilano Sandoval, who is the person in charged of leading the job. Whom ever is working on any of our jobs responds to Atilano. We are perfectionist, all work done by us is completely professional and as neat as possible. You can make payments by check or cash. We do payment plans while we are getting the job done. Once the job is completely done, all payment should be made.

Our business is ran by the boss Atilano Sandoval, who is the person in charged of leading the job. Whom ever is working on any of our jobs responds to Atilano. We are perfectionist, all work done by us is completely professional and as neat as possible. You can make payments by check or cash. We do payment plans while we are getting the job done. Once the job is completely done, all payment should be made.


Windlock Construction

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Windlock Construction

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37 years of experience

Wind-lock Construction is a waterproofing and construction company that has accredited reputation in the tri-state area. The company's CEO Muzafer Javid has been working in this field for over 30 years under two managements of Windlock Construction and Tri State Construction and Restoration Inc. All worker are licensed professionals.

Wind-lock Construction is a waterproofing and construction company that has accredited reputation in the tri-state area. The company's CEO Muzafer Javid has been working in this field for over 30 years under two managements of Windlock Construction and Tri State Construction and Restoration Inc. All worker are licensed professionals.


Air Duct Services

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Air Duct Services

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18 years of experience

Think Green, Breathe CLEAN! 1-443-494-9838 When it comes to cleaning your home and maintaining a sanitary environment inside your home with good quality indoor air, there is more than just simple air filter changes involved- it Involves BIG HEART and little beet of TIME and TEAM WORK. AIR DUCT SERVICES team! 1-443-494-9838

Think Green, Breathe CLEAN! 1-443-494-9838 When it comes to cleaning your home and maintaining a sanitary environment inside your home with good quality indoor air, there is more than just simple air filter changes involved- it Involves BIG HEART and little beet of TIME and TEAM WORK. AIR DUCT SERVICES team! 1-443-494-9838


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Insulation questions, answered by experts

Doubling the insulation in your home also doubles the R-value of said insulation. In other words, by adding more insulation, you can reduce the heat loss by half. Most homes benefit from increasing insulation. Older homes, in particular tend to have less insulation as is, so doubling your insulation could drastically reduce your energy bills, keep your home more comfortable, and take the strain off your HVAC system.

Monolithic slabs don’t require insulation, but many homeowners choose to have their contractors install insulation under the slab during construction. This can help improve home efficiency even more and keep indoor temperatures more stable. Slab foundations are more energy-efficient than uninsulated crawl spaces and basements, and insulated slab foundations are more energy-efficient than insulated crawl spaces and basements.

Garage doors that are not insulated can be a major source of heat loss. That’s why it’s essential to winterize your garage door with insulation and weather stripping to prevent heat loss and keep it warm more easily. Consult a local garage door installer if you need help determining the cause of your garage losing heat.

When looking for a company who installs insulation, your best bet is usually to work with an insulation contractor or professional insulation company. If you can't find a local insulation company, working with a general contractor can be another option. No matter who you hire, always confirm that they have experience.

A DIY blown-in insulation project in a typical attic should take you no more than a week to complete. Experienced homeowners can blow an entire attic in one or two days.

The Andover, NJ homeowners’ guide to insulation services

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