Top-rated insulation pros.

Get matched with top insulation pros in Greenwich, NJ

Enter your zip and get matched with up to 5 pros

Need a pro for your insulation service project in Greenwich, NJ?

Select your specific project to find the pro for you.

TRUSTED BY GREENWICH, NJ HOMEOWNERS

  • Average homeowner rating star icon3.7
    Average homeowner rating
  • Verified reviews icon13
    Verified insulation services reviews

Find Insulation pros in Greenwich

Avatar for Master Attic, LLC
Master Attic, LLC
4.8(
60
)

Serving Greenwich, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"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."
Crawlspace remediation, new batt insulation and moisture barrier encapsulation
Old insulation removal and replace with new batt insulation
Rodent hole on corner of roof
New Blown-in insulation
Crawlspace remediation, new insulation & moisture barrier encapsulation

+106

Response time1 day
23 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)

Serving Greenwich, NJ and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"We are extremely satisfied with the whole process of our house being insulated. First we had the walls done, and then a couple weeks later we had our attic insulated. The crew were so nice, friendly, and knowledgeable. We are very satisfied with everything. Thank you, everyone."
RetroFoam Wall Insulation
Installing RetroFoam
RetroFoam with Siding
RetroFoam with Brick
Response time1 day
137 neighbors recently requested a quote
Recommended by75%of homeowners
Western Pest - Cape May
4.2(
7
)

Serving Greenwich, NJ and surrounding areas

Approved (Corporate)

In business since 1928

Free estimates

Credit card accepted

Western Pest - Cape May has been providing quality pest control for residential and commercial customers in the Northeast since 1928. We take pride in doing things the right way the first time. This is evident in how we treat your home, your business and you. We are state certified and have ongoing training to keep us up to date with all new technology. Western Pest - Cape May employees will work hard until you are completely satisfied, guaranteed.

Response time4 days
Recommended by100%of homeowners
Avatar for Insulation Geniuses
Insulation Geniuses
4.6(
9
)

Serving Greenwich, NJ and surrounding areas

In business since 2016

Free estimates

Emergency services offered

Same quality and company, NEW NAME!!!! Yep we've upgraded our branding to better reflect out company goals. As always, quality products are essential for success, but without certified and trained technicians installing everything to the exact specifications for greatest success, your home wouldn't get the best results. That's why we do things right - every time. Our excellent products come with extended/lifetime warranties INCLUDED - there will never be an upcharge for a warranty. The adage "you get what you pay for" is 100% true for Insulation Geniuses. We'd rather explain the investment up front rather than trying to explain quality for the next 20 years...

Another Happy Homeowner!
Aeroshield NASA Grade Insulation
Energy Star Attic Seal Process
Gable Attic Fan - SOLAR POWERED!  Runs for FREE and 25 Year Warranty!
AeroShield Installed over Blown-In gives you the right protection forever with it's LIFETIME Warranty!

+37

Recommended by88%of homeowners
AGL Solar LLC
4.6(
46
)

Serving Greenwich, NJ and surrounding areas

In business since 2009

Free estimates

Credit card accepted

"I was dreading this work being done due to the anticipated mess since we had a drywall removed to have insulation blown into our attic. The process went fairly quickly. We also had drywall that was cut in our walls to have old insulation removed and new to be blown in. The crew did a lovely job of making the cuts so getting our drywall fixed afterwards was much more simple. All said and done, it wasn't nearly as unpleasant as I had feared. Highly recommend AGL Spray Foam."
Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Victory Home Remodeling
Victory Home Remodeling
4.9(
108
)

Serving Greenwich, NJ and surrounding areas

In business since 2019

Free estimates

Victory Home Remodeling is a multiple award-winning company dedicated to improving the lives of our employees and the homeowners we serve. Specializing in roofing, windows, siding, and gutter replacements, we deliver exceptional craftsmanship and unmatched attention to detail, ensuring a stress-free and rewarding experience from start to finish.\n\nServing New Jersey, New York, Pennsylvania, and Delaware, we’re expanding to Baltimore in March and Boston in October to bring our expertise to even more communities.\n\nWe’re more than a home improvement company—we’re a team committed to excellence, professionalism, and creating lasting value for every homeowner. Trust Victory Home Remodeling to transform your home and elevate your quality of life.\n\nExperience the Victory difference.

Front Porch Window
Horizontal Slider
Vertical Slider
Windows
Window on Brick

+14

Recommended by100%of homeowners
...
Showing 1-10 of 52
Insulation questions, answered by experts

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

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.

The best time to insulate a garage ceiling is when the weather is mild and dry. That means it shouldn’t be stormy, snowy, or raining, and the temperatures should be comfortable. Ideally, you’ll insulate your garage ceiling in the fall, before winter hits. Not only will you be the most comfortable, but you’ll also likely see the greatest energy savings heading into the colder weather with a newly insulated garage.

Opting for insulated ducts can lead to significant long-term savings on your energy bills and contribute to a more efficient HVAC system. The precise amount you can save depends on various factors, including your climate, usage patterns, and the insulation's quality. However, on average, insulated ducts can result in savings of up to 20% on your annual heating and cooling costs, according to ENERGY STAR®.

Actually, condensation can mean that your windows are more energy efficient because the seal keeps cold air out and warm air in. In some cases, windows with poor seals can lead to more condensation, but they may allow the cold and warm air to mix and reduce condensation. If you’re worried about whether or not your windows are properly insulated, have a pro assess them.

The Greenwich, NJ homeowners’ guide to insulation services

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