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Top-Rated Insulation pros in Knowlton - Updated Nov 2026

Avatar for Jersey State Insulations
Jersey State Insulations
5.0(
19
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeSpray Foam Insulation - Install+2 more

Serving Knowlton, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Emergency services offered

Warranties offered

"⭐⭐⭐⭐⭐ Excellent Work by Sebastian – Jersey State Insulations We recently had insulation work completed by Jersey State Insulations, and Sebastian and his team did an outstanding job. From the beginning, Sebastian was professional, knowledgeable, and very easy to work with. He took the time to explain the process, recommended the right insulation for our space, and made sure everything was properly sealed and installed. The workmanship was clean, efficient, and done with great attention to detail. No shortcuts — just solid, quality work. Sebastian was punctual, respectful of our home, and left the area clean after the job was finished. We’ve already noticed an improvement in comfort. I highly recommend Sebastian and Jersey State Insulations to anyone looking for reliable and professional insulation services."
Insulation Project
Removal and re installation
Insulation Project
Bernardsville cinema 3
Insulation Project

+52

Response time10 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Home Insulation Experts, Inc.
Home Insulation Experts, Inc.
4.9(
1,211
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Knowlton, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Warranties offered

"The house had no insulation in the walls and very old insulation in the attic. Home Insulation Experts, Inc team were a pleasure to work with. Very polite and courteous, respected my home and kept me informed throughout the process. I highly recommend them for any insulation job!"
Fiberglass Insulation
Cellulose Insulation
Fiberglass Batt Insulation
Dense Pack Wall Insulation
Closed Cell Spray Foam

+10

Response time9 hrs
Response rate99%
319 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 Knowlton, 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 Atticrawl, LLC
Atticrawl, LLC
4.7(
18
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Knowlton, 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
54 neighbors recently requested a quote
Recommended by62%of homeowners
Avatar for High Point Insulation, LLC
High Point Insulation, LLC
3.7(
3
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeSpray Foam Insulation - Install+2 more

Serving Knowlton, NJ and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"High Point Insulation, LLC is a trusted insulation contractor serving the greater Lehigh Valley, Pocono Township, and Central Jersey areas. We have 9 years experience and specialize in providing residential and commercial clients with superior insulation solutions."

3 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Quarts Insulation, Inc.
Quarts Insulation, Inc.
4.7(
552
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Knowlton, NJ and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Home Insulation Experts did an outstanding job insulating my recently purchased home. Right from the moment i met Allen ,i felt confident thatthis was the company to go with for my insulation needs. If you are looking for an insulation experts you can trust and that does an excellent job this is it. Great price too."
Blow In Fiberglass Insulation
Before clean up
Fiberglass Batt Insulation
Before clean up
During the job

+19

Response time12 hrs
Response rate88%
Recommended by91%of homeowners
Avatar for Metro NY Insulation
Metro NY Insulation
4.5(
6
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Knowlton, NJ and surrounding areas

In business since 2005

Credit card accepted

Metro NY Insulation is a green focused, cellulose insulation contractor that works with homeowners to help them save money on their heating and cooling costs. By sealing the home to prevent drafts from allowing heated (or cooled) air from escaping, home works more efficiently and uses less energy. We are accredited by the Building Performance Institute (BPI) for Building Envelope and Building Analyst to view the whole building as a system and allow it to breathe properly while still retaining the heat in the winter and the conditioned air in the summer. Proper ventilation and insulation leads to a healthier home, with fewer mold issues and less likelihood of developing ice dams in the winter. We do more than just add insulation, we do full scale weatherization to keep you and your home healthy. \n\nWe also do interior wall soundproofing to reduce noise transfer from room to room.\n\nWe use only 100% Borate infused National Fiber Cel-Pak so you won't have to worry about the toxic off-gasing or ammonia smell from inferior insulation used by other companies.\nAll employees are trained and trusted. NO SUBCONTRACTORS. Free in-home assessment. Costs are determined by the scope of the job - we do everything to the BPI specifications. \nWe do more than just insulate - WE WEATHERIZE!!!

Rafter Chutes
Recessed Light Covers
Cellulose Installed
Recommended by83%of homeowners
...
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Insulation FAQs, answered by experts

Excluding carpet, strand-woven bamboo provides excellent underfoot heat. Laminate flooring is also good for insulation and preventing cold feet in the winter. Bamboo tends to work better in climates that have more consistent temperatures, while laminate does a better job at insulating floors in homes that experience more extreme temperature changes, such as the deciduous climates of the northeastern U.S.

On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.

If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.

Several factors influence the overall cost:

  • Insulation Type: Prices per square foot vary significantly by material.

  • Reflective: $0.50–$1.50

  • Blown-in: $1–$4

  • Batt: $2–$4

  • Loose-fill: $2–$5

  • Spray foam: $2–$5

  • Structural insulated panels (SIPs): $4–$7

  • Project Complexity: Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.

  • Removal Issues: The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.

You won’t find anything inside a cupola on a house because it’s hollow (think of an upside-down cup), allowing air to ventilate out of a roof via vents and light to come in via windows. They also usually have a base, vents around the middle (usually louvers), and a pointed cap at the top.

Insulation can be made of cellulose, fiberglass, polyurethane, polystyrene, or mineral wool. Radiant barriers are often made of aluminum or other similarly reflective materials, but they will need to be paired with something else because they don’t provide heating benefits. Cellulose is among the most eco-friendly options and may be recycled when it’s past its shelf-life, whereas polyurethane and polystyrene both emit harmful compounds and will need to be handled with care during installation.

An insulated garage benefits from roof vents to ensure proper ventilation and prevent moisture buildup. Insulation can trap moisture in the garage, especially during temperature fluctuations, and roof vents play a crucial role in expelling the moisture in the air. Including roof vents promotes air circulation, preventing condensation and enhancing overall air quality.

The Knowlton, NJ homeowners’ guide to insulation services

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