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  • Verified reviews icon78
    Verified insulation services reviews

Find Insulation pros in Dover

Avatar for Master Attic, LLC

Master Attic, LLC

2486 Ridgeway Blvd
4.94(
50
)
Approved Pro

Master Attic, LLC

2486 Ridgeway Blvd
4.94(
50
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
80 local quotes requested

Servicing NJ/PA/DE At Master Attic, our goal is to provide you with the highest quality materials and workmanship at an affordable price. We are a team of licensed, trained professionals with 20+ years of experience in insulation and rodent solutions. May it be rodent proofing, insulation removal, insulation installation, sanitizing, moisture barrier, radiant barrier, air duct repair replacement, or crawlspace cleaning, we have you covered. Do you hear noises in the attic? Smell something in the crawl space!? Schedule an appointment today, and have one of our technicians come out to assess the area and provide a free detailed estimate for the project.

"I RECENTLY HAD MY ATTIC INSULATION REPLACED BY MASTER ATTIC. ALEX CAME OUT RIGHT ON SCHEDULE AND GAVE ME A FAIR PRICE. ( I DID HAVE 4 OTHER ESTIMATES) THE CREW LEAD BY ROBERTO WAS AMAZING. THEY WERE VERY CONSIDERATE, CAREFUL IN MAKING SURE THE AREA WAS SEALED OFF AND WERE VERY CAREFUL OF MY PERSONAL BELONGINGS. THEY DID A GREAT JOB IN REMOVING OLD INSULATION , VACUUMING OUT THE ATTIC ,SPRAYED AREA AND SEALED ANY OPENINGS. BEFORE THEY BROUGHT IN NEW INSULATION, THEY ASKED ME IF I WISHED TO TO VIEW THE ATTIC AND I DID. I WAS AMAZED EVEN AT THIS POINT, HOW CLEANED EVERYTHING LOOKED . (THIS INSULATION HAD BEEN UP THERE FOR 70 YEARS) NEW INSULATION WAS INSTALLED AND IT LOOKS GREAT. THE CREWED CLEANED UP EVERYTHING , EVEN VACUUMED THE AREA IN THE ROOM. ALL BAGS OF OLD INSULATION WERE REMOVED PROMPTLY AND I WOULD HIGHLY RECOMMEND THEM TO ANYONE."

Robin S on September 2025

Servicing NJ/PA/DE At Master Attic, our goal is to provide you with the highest quality materials and workmanship at an affordable price. We are a team of licensed, trained professionals with 20+ years of experience in insulation and rodent solutions. May it be rodent proofing, insulation removal, insulation installation, sanitizing, moisture barrier, radiant barrier, air duct repair replacement, or crawlspace cleaning, we have you covered. Do you hear noises in the attic? Smell something in the crawl space!? Schedule an appointment today, and have one of our technicians come out to assess the area and provide a free detailed estimate for the project.

"I RECENTLY HAD MY ATTIC INSULATION REPLACED BY MASTER ATTIC. ALEX CAME OUT RIGHT ON SCHEDULE AND GAVE ME A FAIR PRICE. ( I DID HAVE 4 OTHER ESTIMATES) THE CREW LEAD BY ROBERTO WAS AMAZING. THEY WERE VERY CONSIDERATE, CAREFUL IN MAKING SURE THE AREA WAS SEALED OFF AND WERE VERY CAREFUL OF MY PERSONAL BELONGINGS. THEY DID A GREAT JOB IN REMOVING OLD INSULATION , VACUUMING OUT THE ATTIC ,SPRAYED AREA AND SEALED ANY OPENINGS. BEFORE THEY BROUGHT IN NEW INSULATION, THEY ASKED ME IF I WISHED TO TO VIEW THE ATTIC AND I DID. I WAS AMAZED EVEN AT THIS POINT, HOW CLEANED EVERYTHING LOOKED . (THIS INSULATION HAD BEEN UP THERE FOR 70 YEARS) NEW INSULATION WAS INSTALLED AND IT LOOKS GREAT. THE CREWED CLEANED UP EVERYTHING , EVEN VACUUMED THE AREA IN THE ROOM. ALL BAGS OF OLD INSULATION WERE REMOVED PROMPTLY AND I WOULD HIGHLY RECOMMEND THEM TO ANYONE."

Robin S on September 2025


Avatar for Jersey State Insulations

Jersey State Insulations

5.00(
8
)
Approved Pro

Jersey State Insulations

5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
20 local quotes requested

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

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


Avatar for Acorn Home Improvements Inc

Acorn Home Improvements Inc

622 Rte 10
4.63(
144
)
Approved Pro

Acorn Home Improvements Inc

622 Rte 10
4.63(
144
)
Approved Pro
Customers say: Quality work
65 local quotes requested
39 years of experience

We are local, family owned home improvement company specializing in wood and vinyl replacement windows, vinyl siding, roofing and blown-in cellulose insulation. We are fully licensed and insured. We offer free in home consultations and estimates, with the use of thermal-imaging technology. We have been serving the community for 30 years, with a reputation of delivery high quality products at a great value. Additional email: [email protected].

"Acorn was great. As a first time homeowner, I appreciated the recommendations they made for replacing the old insulation in our attic and getting the largest bang for our buck. At the same time, they didn't try to upsell us on things other contractors recommended. Overall, the price was competitive and the work quality was high."

Sam R on December 2024

We are local, family owned home improvement company specializing in wood and vinyl replacement windows, vinyl siding, roofing and blown-in cellulose insulation. We are fully licensed and insured. We offer free in home consultations and estimates, with the use of thermal-imaging technology. We have been serving the community for 30 years, with a reputation of delivery high quality products at a great value. Additional email: [email protected].

"Acorn was great. As a first time homeowner, I appreciated the recommendations they made for replacing the old insulation in our attic and getting the largest bang for our buck. At the same time, they didn't try to upsell us on things other contractors recommended. Overall, the price was competitive and the work quality was high."

Sam R on December 2024


"Beavers Building is awesome. From planning to completion Musaddiq was amazing. He has an attention to detail that is honest and refreshing. I would definitely recommend Beavers Building for home improvement needs. Musaddiq turned my dreary ceiling into a beautiful focal point. He does not rush and problem solves as he creates the final product. I cannot say enough about his work. I hope to work with him in the future!"

Charles E on September 2025

Premium home improvement company specializing in carpentry and drywall. We offer services for renovations, restorations, and additions.

"Beavers Building is awesome. From planning to completion Musaddiq was amazing. He has an attention to detail that is honest and refreshing. I would definitely recommend Beavers Building for home improvement needs. Musaddiq turned my dreary ceiling into a beautiful focal point. He does not rush and problem solves as he creates the final product. I cannot say enough about his work. I hope to work with him in the future!"

Charles E on September 2025


Landa Home Improvement LLC

56 Union Turnpike
No reviews yet

Landa Home Improvement LLC

56 Union Turnpike
No reviews yet
11 years of experience

I am Raul Landa, owner of my business Landa Home Improvement LLC. I've been a general Home Improvement Contractor for approx. 10 years. Serving Sussex County NJ and the surrounding counties. My services include: demolition, remodeling, painting, tile & flooring, kitchen & bathroom remodeling, siding, door installations, stair installation & railings, porches & decks, framing, insulation, and more. Please provide a detailed description of your project. Contact: 973 868 0474.

I am Raul Landa, owner of my business Landa Home Improvement LLC. I've been a general Home Improvement Contractor for approx. 10 years. Serving Sussex County NJ and the surrounding counties. My services include: demolition, remodeling, painting, tile & flooring, kitchen & bathroom remodeling, siding, door installations, stair installation & railings, porches & decks, framing, insulation, and more. Please provide a detailed description of your project. Contact: 973 868 0474.


ARG SOLUTIONS ON TIME

No reviews yet

ARG SOLUTIONS ON TIME

No reviews yet

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.



Ridge One Construction LLC

42 Maple Avenue
5.00(
6
)

Ridge One Construction LLC

42 Maple Avenue
5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

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

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

309 Richmond Street
No reviews yet

M6 Builders LLC

309 Richmond Street
No reviews yet
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+


Home Genius Exteriors

399 Campus Dr
4.52(
44
)

Home Genius Exteriors

399 Campus Dr
4.52(
44
)
Customers say: Super punctual
1015 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!

"The guys did a great job on my windows!"

Ambrose P on September 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!

"The guys did a great job on my windows!"

Ambrose P on September 2025

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Insulation questions, answered by experts

Unless your cellulose insulation is wet, moldy, or showing signs of mildew or pests, there’s no need to remove it before adding new insulation on top of it. Inspect your insulation thoroughly before adding the new insulation, and if you’re unsure how to assess the presence of mold or mildew, talk to a mold remediation specialist near you.

Drywall insulation costs around $1,800, on average, but prices can range from $500 to $4,500, depending on a few different factors. The following things are important considerations to make when pricing out your insulation project:

  • Square footage of insulation

  • Type of insulation 

  • Climate in your area and the insulation R-value required

  • Whether or not your walls are already finished

  • Accessibility of the area 

  • Whether or not you need old insulation removed first

Insulating ducts prevent or significantly reduce condensation by reducing temperature differences between the duct surface and surrounding air. Proper insulation also minimizes sweating, improves energy efficiency, and prevents moisture damage. However, if humidity levels are unusually high or there are air leaks, additional measures like sealing ducts and using a dehumidifier may be needed.

No, 55 degrees Fahrenheit is not too cold for a house, as it’s a temperature that will keep your pipes and appliances from freezing. Well-insulated homes can even go to 50 degrees, but check with an HVAC pro before opting for such a low temperature. Stick to 55 degrees to be on the safe side.

Although it’s not required, air ventilation in a finished basement can help improve the air quality, prevent moisture and mold issues, keep musty odors away, and also maintain the air quality throughout the rest of your home. Proper ventilation will help maintain the value of your investment in finishing your basement. Try basement ventilation methods like installing vents or a dehumidifier for best results.

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The Dover, NJ homeowners’ guide to insulation services

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