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TRUSTED BY LAWRENCEVILLE, NJ HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon73
    Verified insulation services reviews

Top-Rated Insulation pros in Lawrenceville - 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 Lawrenceville, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Contacted Master Attic via Angi and Alex, the technician came to evaluate our attic and crawl space (2 separate spaces in our house). We heard critter noises and our upstairs was hot in the summer. The insulation was original to the ~30 year old house, so we know it's about time to get it done. Alex checked both spaces and showed us photos of problem areas. We have an estimate and Alex explained the details of the work involved. The team came within the week (we lucked out to take the spot of a cancellation), and everything was done as expected. There was a lot of work to remove old insulations, vacuum all debris, sanitize the space, seal all air gaps, install baffles, rodent proof, and install new insulation. The work was completed in around 6 hours, the spaces are now clean and tidy - quite unbelievable given how they were before. We went for the heavier insulation which is reflected in the project cost."
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%
15 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 Lawrenceville, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Free estimates

Credit card accepted

"My salesman was Jose. He was excellent. Everything promised was given and the results show. My new roof and gutters are wonderful. Taylor my project manager was very friendly and a breath of fresh air. Please see the pictures below. If youâ re looking for a trustworthy exterior remodeling company, you donâ t have to look any further. I am one happy paying customer. They really are GENIUSES."
Roofing
Roofing
Roofing
Roofing
Roofing

+74

Recommended by72%of homeowners
Avatar for Integrated Home Services
Integrated Home Services
4.7(
713
)
Blown-In Insulation - Install or Upgrade

Serving Lawrenceville, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

At Integrated Home Services, we believe a truly comfortable, energy-efficient home is built from the outside in. Rather than treating home comfort as a series of isolated equipment fixes, we take a whole-home building science approach. We combine high-performance insulation, comprehensive air sealing, and complete thermal envelope management to deliver lasting comfort, lower utility bills, and healthier indoor air.

6 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Attic Avengers LLC
Attic Avengers LLC
5.0(
4
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install

Serving Lawrenceville, NJ and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Great experience from start to finish! The team was professional, friendly, and did an excellent job replacing our old blown-in insulation. They were thorough, clean, and made the whole process easy. We’re already noticing a difference in the house. Highly recommend!"
Attic
Attic
Attic
Attic
Attic

+6

18 neighbors recently requested a quote
Avatar for Atticrawl, LLC
Atticrawl, LLC
4.7(
18
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Lawrenceville, 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
56 neighbors recently requested a quote
Recommended by62%of homeowners
Avatar for NB Woodworks, LLC
NB Woodworks, LLC
5.0(
26
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Lawrenceville, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1875

Free estimates

Warranties offered

"Anthony Nastasi, hired by me to rebuild our decaying bay window, did a terrific job. When he came out to survey our prospective job, he listened closely to what we wanted, took notes, did measurements, and made suggestions. Later that day he sent my a proposal, detailing the materials and total cost of the project. Ultimately, the final cost was only about $300 more as additional material was needed. Mr. Nastasi worked a full day each day he was here. He also was honest and direct - he told me when he would arrive in morning, and he did. He told me when he had to complete another job so he might have to leave early or miss a day. Many Subs aren't professional enough to simply tell the truth. He always did. I am extremely happy with the quality of the work he did, the time frame in which he completed the job and, most importantly, how it looks. I would unequivocally recommend Anthony Nastasi to anyone. John Loughrey"
.
.
.
.
Our Work

+34

Response time1 day
6 neighbors recently requested a quote
Recommended by57%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 Lawrenceville, 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%
9 neighbors recently requested a quote
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Insulation FAQs, answered by experts

Expect your home insulation project to take between five and 12 hours to complete on average for batts or boards and two to five hours for spray foam or blown-in insulation. It might take longer if you need to remove your home’s existing insulation, you have a higher-than-average square footage, or accessibility is limited.

Cellular shades, also known as honeycomb shades, are the most energy-efficient and insulating window treatments. Their honeycomb structure is made of soft fabric that forms layered cell pockets. These pockets trap air, creating a thermal barrier that reduces heat loss in the winter and blocks heat gain in the summer. For even greater insulation, consider double- or triple-cell varieties. Side-tracked cellular shades, which seal the edges of the window frame, can further minimize air leaks and maximize energy efficiency.

You do not need to drywall over most types of garage insulation. However, doing so can increase noise reduction, make the space more attractive, and keep children and pets from touching harmful fiberglass insulation. If you’re using cellulose or some other type of blown-in insulation (fiberglass and mineral wool are common), you will need drywall to contain the insulation material.

Rockwool insulation can last up to 100 years, but just how long this insulation lasts in your home depends on how well it's maintained. Poorly installed insulation may last only 30 years, so be sure to regularly inspect your home's insulation for water damage, settling, and pests to give your insulation the best chance of having a long lifespan.

Closed-cell foam may come with a higher price tag, but it’s worth the investment because of its strength and durability. This material offers excellent thermal and moisture resistance, contributing to its long life span. Its construction enhances energy efficiency, which can lead to reduced heating and cooling costs over time.

The Lawrenceville, NJ homeowners’ guide to insulation services

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