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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

Find Insulation pros in Lawrenceville

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%
21 neighbors recently requested a quote
Avatar for RetroFoam of Philadelphia
RetroFoam of Philadelphia
5.0(
22
)
Spray Foam Insulation - InstallInjection Insulation - Install

Serving Lawrenceville, 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
Response rate100%
115 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.8(
325
)
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 by78%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 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
63 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
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
Score Spray Foam
3.6(
24
)
Spray Foam Insulation - Install

Serving Lawrenceville, NJ and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Score Construction completed a clean tile installation for me for a reasonable price. They took care of all the extras such as old tile disposal and also did some painting to to complete the job. I am very happy with the work performed. The easiest that I've found to communicate with throughout the job and a clear payment accountability system."
 bathroom
 bathroom
 kitchen floor
 bathroom
 kitchen

+17

Recommended by100%of homeowners
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Showing 1-10 of 80
Insulation questions, answered by experts

Because of the moisture concern, open-cell foam requires a vapor barrier. The barrier protects against high humidity and moisture exposure in rooms such as basements, bathrooms, or exterior walls. It wouldn't be necessary in dry interior spaces.

Spray foam insulation doesn’t do well around heat sources. Therefore, You can use spray foam insulation to seal around HVAC boots that penetrate through the drywalls or around where wrapped ducts connect to the boots, but we don’t recommend using spray foam insulation to encapsulate your air ducts. Spray foam insulation on air ducts is also less effective compared to duct wraps.

The primary downside of radiant barriers is their limited effectiveness in cold climates. They are designed to reflect radiant heat, making them less beneficial in cooler conditions where heat retention is more important. 

Radiant barriers require proper installation to maximize effectiveness. Incorrect placement can lead to minimal benefits. They also do not provide insulation, meaning they should be used in conjunction with traditional insulation for optimal energy efficiency. 

The life span of fiberglass insulation can be as long as 80 to 100 years, but because of changing building codes, it’s best to get your insulation checked every 10 to 15 years. Signs of degrading fiberglass insulation include bits of batts on the floor or batts detached from frames. Having optimal, healthy insulation in your home will improve its energy efficiency, lowering your monthly bills.

STC (Sound Transmission Class) is a rating that describes how well a building material or assembly blocks airborne sound. A higher STC rating means less noise will pass through the material, providing better sound reduction. This rating system applies to various building components, including windows, doors, flooring, drywall, and insulation.

For context, a typical single-pane window has an STC rating of around 25 (where normal conversations are audible), while a well-sealed, double-pane window can exceed STC 45 (blocking loud speech and most music). It is important to note that for some products, like soundproofing drywall, the STC rating refers to the entire wall system, not just the individual panel.

Additionally, STC ratings are most effective for measuring sound reduction at mid-to-high frequencies, such as human speech, and may not accurately reflect how well a material blocks low-frequency sounds like bass music or thunder. Because of these factors, it is recommended to consult a professional to determine the right STC-rated materials for your specific soundproofing needs.

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.