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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon94
    Verified insulation services reviews

Top-Rated Insulation pros in South River - Updated Nov 2026

Avatar for Master Attic, LLC
Master Attic, LLC
4.8(
61
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInsulation - Install or Upgrade

Serving South River, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"This was an amazing process which I was anxious about doing. Everything went smoothly and it was done in a timely manner. David was professional and he explained the process. His team worked hard . Plastic liner was laid down to protect the carpet. The old insulation was taken away. An estimate was given. I had to reschedule the cleanup date; there was no problem."
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 time2 days
Response rate100%
16 neighbors recently requested a quote
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)
Spray Foam Insulation - InstallInjection Insulation - Install

Serving South River, NJ and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"Hired Retro Foam of Philadelphia to install foam insulation on 3 sides of my townhouse on Wildwood Crest. They did a great job, the team of Frank, Mike, Kevin and Keith were very respectful of our property, They were very friendly and mannerly during the process. when they left, you did not even know they were at my home. Great Job Bob/Jackie Marnie"
RetroFoam Wall Insulation
Installing RetroFoam
RetroFoam with Siding
RetroFoam with Brick
Response time1 day
Response rate100%
130 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
352
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving South River, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Credit card accepted

"I have only glowing things to say about our experience using Home Genius Exteriors. From the thorough initial estimate and comprehensive inspection of the worksite and what the job would entail to the final bit of blown-in insulation, our multi-team project was completed to our satisfaction in a timely and professional manner. In the course of four days, we had a new roof, new trim, new gutters, and new insulation. Each part of the project required a different team. Each crew finished their task within the projected timeframe. Home Genius coordinated everything, including ordering and delivering the materials and arranging for the delivery and removal of the dumpster. Thanks to our Project Coordinator Ivan, every step in the process went smoothly. He arranged for workers to be at our home on consecutive days: we did not have any time in between steps waiting for availability of the next team. Ivan kept us informed of progress at every step of the way."
Roofing
Roofing
Roofing
Roofing
Roofing

+74

Recommended by72%of homeowners
Avatar for Atticare NJ Corp
Atticare NJ Corp
4.4(
100
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving South River, NJ and surrounding areas

Approved

In business since 2008

Free estimates

Credit card accepted

"I highly recommend this company for any type of insulation work. The salesman gave a very thorough presentation on all the available options for me, along with a rough estimate at the end of the meeting. I went with the option of removing & installing new rolled insulation (R30). The crew arrived on the scheduled installation date and got right to work. Sealed off everything properly, removed the old insulation, cleaned & cleared out the space, and then installed the new insulation. It was all completed in about 4 hours. I was very impressed."
Insulation, plywood & radiant barrier
New insulation (R-19)
Droppings under the insulation
Rodents damages
Dead rodents under the insulation

+11

Response time8 hrs
143 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Paulsen Insulation Co.
Paulsen Insulation Co.
4.1(
10
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallInjection Insulation - Install

Serving South River, NJ and surrounding areas

Approved

In business since 1965

Free estimates

Credit card accepted

Paulsen Insulation Company is a family owned and operated company, providing the best insulation services since 1965. We provide quality products and service; satisfying the highest standards in the building industry. For more than Fifty years, we have been insulating new construction, existing homes, and commercial buildings. With the prices of fuel rising so dramatically, we know how important it is to conserve energy and keep your homes heating and cooling expenses low. Call us today! or visit our website for basic insulation knowledge or a free estimate www.paulseninsulation.com \n

Spray Foam slope ceiling
Spray foam exterior walls closec cell foam
Closed Cell Foam R-76(11") installed into 12&
Spray foam exterior wall cavities
Insulated slope ceiling's and exterior walls

+20

Response time2 days
14 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Atticrawl, LLC
Atticrawl, LLC
4.7(
18
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving South River, NJ and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

Welcome to Atticrawl, LLC \nWe pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

Attic Insulation
Attic Insulation
55 neighbors recently requested a quote
Recommended by62%of homeowners
Avatar for Koala Insulation of Mercer & Middlesex Counties
Koala Insulation of Mercer & Middlesex Counties
5.0(
1
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving South River, NJ and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

Koala Insulation of Mercer & Middlesex Counties is the area's certified insulation expert providing high-quality insulation services to homeowners, contractors and property owners. We work with new construction, retrofit applications, and properties affected by natural disasters or that have suffered significant damage. We provide all types of insulation including blown-in cellulose and fiberglass, spray foam, and batt-insulation. Furthermore, we provide a number of energy efficiency upgrades such as air sealing, thermal imaging, hatch and can light covers. If it involves insulating or improving energy efficiency within a building envelope, we can handle it. We offer competitive prices and free insulation evaluations. We are locally owned and operated, fully insured and licensed, and our services come with a limited lifetime warranty.

Sprayfoam
New Construction
Blown-in Insulation
Blown-in Insulation
Blown-in Insulation

+1

Response time6 days
Response rate100%
7 neighbors recently requested a quote
...
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Insulation FAQs, answered by experts

R-value stands for resistance value and is a number assigned to insulation that states how good the insulation is at heat transference (insulation). The R-value of injection foam is around 4 which homeowners will be happy to know is actually quite good. Another benefit of injection foam versus fiberglass foam is that the colder it gets, the more injection foam retains its resistance properties, whereas fiberglass tends to lose its efficiency in colder temperatures.

Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and caulking your windows to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.

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.

Sometimes you may be able to leave the bags with your regular trash. However, that’s not always the case. Call your local waste management prior to starting the removal and ask about the proper ways to recycle or dispose of removed insulation. In many cases, your town or municipality has a designated dumpster for building waste.

The cost of installing spray foam insulation is $2,760 on average, but this cost can be as low as $650 or as high as $7,700. The main cost factor is the size of the insulated area and the type of spray foam insulation. 

Polyurethane spray foam costs between $0.44 and $1.50 per board foot, where a board foot is equal to the volume of a one-foot length of a board. More expensive options, like soybean or vegetable oil spray foam, range from $1.50 to $3.00 per board foot.

The South River, NJ homeowners’ guide to insulation services

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