Top-rated attic insulation installers.

Get matched with top attic insulation installers in Randolph, NJ

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Attic insulation installers in Randolph

Avatar for Monk's Home Improvements

Monk's Home Improvements

4.73(
579
)
•Approved Pro

Monk's Home Improvements

4.73(
579
)
•Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
1320 local quotes requested

Along with the Monk's Kitchen & Bath Design Studio, we are a full-service home improvement provider. Monk's will help you plan, design, and purchase everything you need for a remodel. Then our expert craftsmen will install everything and our painters will come and complete the job.

"Fair price, very thorough scoping and quoting, great management and communication, and very skilled and friendly workers. Will continue working with Monks on all future home improvement needs."

David R on November 2025

Along with the Monk's Kitchen & Bath Design Studio, we are a full-service home improvement provider. Monk's will help you plan, design, and purchase everything you need for a remodel. Then our expert craftsmen will install everything and our painters will come and complete the job.

"Fair price, very thorough scoping and quoting, great management and communication, and very skilled and friendly workers. Will continue working with Monks on all future home improvement needs."

David R on November 2025

Danch Flooring

No reviews yet

Danch Flooring

No reviews yet
42 years of experience

Danch Flooring a division of Danch Home LLC has been in the flooring business for over 35 years. We offere shop at home service and estimates are always free. Our years of experience will make your flooring needs simple and flawless.

Danch Flooring a division of Danch Home LLC has been in the flooring business for over 35 years. We offere shop at home service and estimates are always free. Our years of experience will make your flooring needs simple and flawless.

1 LLC

4.75(
12
)

1 LLC

4.75(
12
)
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers

Plumbing, electrical, heating, air conditioning, and hot water heaters. 1 LLC has been in business since 2003

"Super easy & got the job done very quick. Nick was very responsive and easy to work with (and actually suggested I pursue a cheaper alternative that I initially asked for, which never happens). Strongly recommend and would use again!"

Jason S on June 2021

Plumbing, electrical, heating, air conditioning, and hot water heaters. 1 LLC has been in business since 2003

"Super easy & got the job done very quick. Nick was very responsive and easy to work with (and actually suggested I pursue a cheaper alternative that I initially asked for, which never happens). Strongly recommend and would use again!"

Jason S on June 2021

Defaria Hardwood Flooring Sales Installation

No reviews yet

Defaria Hardwood Flooring Sales Installation

No reviews yet
15 years of experience

Distributors of Hardwood Flooring and Supplies to the Flooring Industry

Distributors of Hardwood Flooring and Supplies to the Flooring Industry

Bellari Home Remodeling

4.74(
107
)

Bellari Home Remodeling

4.74(
107
)
Customers say: Super punctual
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers

Bellari offers home remodeling solutions just like we have since we were founded in 1950 as Somerville Aluminum. Our staff of experienced professionals sell and install a wide-range of name-brand home remodeling products. From windows, doors, siding, roofing, decks, sunrooms, awnings and handyman services to kitchens and bathrooms, we pride ourselves on the versatility and quality of the home remodeling solutions we offer New Jersey homeowners. Contact Bellari today to get an estimate for your next home improvement project, or visit our showroom in Branchburg, NJ.

Bellari offers home remodeling solutions just like we have since we were founded in 1950 as Somerville Aluminum. Our staff of experienced professionals sell and install a wide-range of name-brand home remodeling products. From windows, doors, siding, roofing, decks, sunrooms, awnings and handyman services to kitchens and bathrooms, we pride ourselves on the versatility and quality of the home remodeling solutions we offer New Jersey homeowners. Contact Bellari today to get an estimate for your next home improvement project, or visit our showroom in Branchburg, NJ.

ABBOT O'REILLY CONTRACTING

No reviews yet

ABBOT O'REILLY CONTRACTING

No reviews yet
30 years of experience

We have over 20 years experience in the field and incorporated since 1995, licensed, insured, bonded and a member of the BBB

We have over 20 years experience in the field and incorporated since 1995, licensed, insured, bonded and a member of the BBB

Avatar for American Oak Hardwood Floors

American Oak Hardwood Floors

4.97(
29
)

American Oak Hardwood Floors

4.97(
29
)
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

American Oak Hardwood Floors has been owner operated since 1985. In 2000, Dmitriy Karakash & Andy de Lima purchased the business and continued to build on the great reputation that was built before him. Dmitriy & Andy are involved in every aspect of your future flooring project from the estimate to the finished product. Dmitriy & Andy take pride in quality and professionalism. Whether you need some repair work or a complete demolition and install, call American Oak Hardwood for any of your hardwood flooring needs.

"Outstanding. The team was prompt and professional."

Robert B on December 2018

American Oak Hardwood Floors has been owner operated since 1985. In 2000, Dmitriy Karakash & Andy de Lima purchased the business and continued to build on the great reputation that was built before him. Dmitriy & Andy are involved in every aspect of your future flooring project from the estimate to the finished product. Dmitriy & Andy take pride in quality and professionalism. Whether you need some repair work or a complete demolition and install, call American Oak Hardwood for any of your hardwood flooring needs.

"Outstanding. The team was prompt and professional."

Robert B on December 2018

Contractor Sandoval Carpentry & Painting

No reviews yet

Contractor Sandoval Carpentry & Painting

No reviews yet
23 years of experience

Our business is ran by the boss Atilano Sandoval, who is the person in charged of leading the job. Whom ever is working on any of our jobs responds to Atilano. We are perfectionist, all work done by us is completely professional and as neat as possible. You can make payments by check or cash. We do payment plans while we are getting the job done. Once the job is completely done, all payment should be made.

Our business is ran by the boss Atilano Sandoval, who is the person in charged of leading the job. Whom ever is working on any of our jobs responds to Atilano. We are perfectionist, all work done by us is completely professional and as neat as possible. You can make payments by check or cash. We do payment plans while we are getting the job done. Once the job is completely done, all payment should be made.

Happy Home Improvement LLC

No reviews yet

Happy Home Improvement LLC

No reviews yet
11 years of experience

HAPPY HOME IMPROVEMENT LLC. " Where we treat yours like ours" is our motto We believe in getting the job done right the first time. Quality, Care and Professionalism undergirds our Home Improvement Expertise. Whatever your home need to be happy and up to code, exterior or interior we are well capable completing.

HAPPY HOME IMPROVEMENT LLC. " Where we treat yours like ours" is our motto We believe in getting the job done right the first time. Quality, Care and Professionalism undergirds our Home Improvement Expertise. Whatever your home need to be happy and up to code, exterior or interior we are well capable completing.

ULTIMATE VISIONS LLC

1.00(
2
)

ULTIMATE VISIONS LLC

1.00(
2
)

COST IS DETERMINED BY THE JOB.

COST IS DETERMINED BY THE JOB.

...
Showing 1-10 of 996
FAQs for attic insulation installation projects in Randolph, NJ

The best attic insulation depends on where you live, the project stage, and your budget. New builds often benefit from structural insulated panels for top-tier efficiency, while homes in very warm regions can see big cooling savings with reflective insulation. Blown-in, loose-fill, and spray foam all excel at filling odd spaces in finished attics. Talk with a certified local pro to match the material to your climate, space, and wallet.

You’ll only need a licensed electrician if the project calls for moving existing wiring or adding new fixtures. For straightforward insulation jobs, your insulation installer can work around current cables. That said, never start insulating until a pro has checked any questionable wiring. If you suspect damaged or outdated circuits, book an electrician first to keep the project—and your home—safe and code-compliant.

Without air sealing, even the best insulation can underperform. Gaps let heated or cooled air leak out, forcing your HVAC system to work harder and driving up energy bills. Sealing those cracks before adding insulation locks in conditioned air, keeps moisture at bay, and helps the new material hit its full R-value. Ask your insulation pro to tackle sealing first so you enjoy consistent comfort and lower monthly costs.

Among readily available options, structural insulated panels and rigid foam boards top the charts with R-values that can reach 8.0. They’re ideal for new construction or very cold climates where maximum thermal resistance matters most. If you live in a milder zone, blown-in or loose-fill insulation may deliver plenty of performance at a lower price. Weigh the upfront cost against energy savings—and lean on a local pro’s guidance—to pick the smartest fit.

The Randolph, NJ homeowners’ guide to attic insulation installations

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

See all articles