Precision Home Construction
“Im so happy with precision home construction work with Kelvin he was so explanatory on every detail.”
Best Insulation Contractors near Brookhaven, NY
These contractors serve Brookhaven from nearby bases in towns including Medford, Ronkonkoma and Shirley.
15 contractors listed · 2 open 24/7 · 9 open weekends · 13 rated 4.5+ · 3 show a license
Data verified October 18, 2026
A1 Roofing
“They performed high quality work at the quoted price and were a pleasure to deal with from start to finish.”
Weather Foam Insulation: Home Insulation Company
“Joe stopped by to assess the state of my home's insulation needs and provided great options and professional recommendations.”
Arlo Roofing
“They did a great job on my aunt's house full siding looks amazing very clean work they came on time very responsible the workers”
Healthy Basement Systems
“We had Eric come to our home check out our basement and he was clear and honest about what is needed to get it in good standing.”
Supreme Island Corp
“They came within a hour even in a bad weather condition and fixed the Top siding.”
The 15 contractors listed for Brookhaven, NY insulate attics, walls, crawl spaces and rim joists. Details under each one about materials, hours and the services advertised are copied from the company's own site; star ratings and comments come from public reviews.
Area overview: Brookhaven, NY
The 15 contractors on this page are rated from 4.2 to 5.0 across 1,205 reviews; 6 have 50 or more reviews and 13 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (91%), quality (90%) and responsiveness (90%). The topics that come up most in reviews of the contractors on this page are "price", "cleanliness" and "crew". 2 are open around the clock; 9 are open on Saturdays and 4 on Sundays. 3 show a license on their websites; 1 lists staff certifications (BPI) and 4 have a BBB rating of A or A+. Domain records put 6 websites of the contractors on this page at ten or more years old; the oldest dates from 2001. 2 offer emergency call-outs; 5 offer financing or payment plans; 8 give free estimates; 3 are family- or locally-owned and 3 list coupons or special offers. We have a website on file for all 15 of the contractors on this page; 14 publish a contact page; 9 list a public email and 2 take bookings online. We count these figures across the contractors on this page; hours and prices change, so confirm the details with the contractor before you book.
Will anyone assess the house at no charge?
No charge assessments are advertised by 8 of the 15 contractors on this page. A free look usually means someone measures the attic and writes a proposal. A paid energy audit with a blower door and a camera is a different product and tells you far more about where your house is leaking.
Pinnacle Roofing 786
“Unlike other contractors I've met, Omair actually got done in the time frame he initially stated.”
Green Team LI
“Team E was great, professional and informative excellent service from green team I recommend it 100%”
ELI Construction Services
“If you are considering a home improvement, I highly recomend you contact them for an estimate, you will be glad you did.”
Home Efficiency Experts
“He was extremely patient with all the questions we had and didn't push anything on us.”
Green Audit USA
“It is a pleasure to work with Green Audit.”
Thermathec
“They did my garage insulation and showed up on time and left everything super clean.”
Daddy Spray Foam Insulation Corporation
“I recommend them they are punctual and they did an amazing job”
Blake Windows
“We are very happy with the quality of their work and Arnie was very pleasant to work with and professional during the whole process.”
Rocket Insulation
“Rocket came and installed spray foam on the ceilings and walls perfectly, lightning fast, and gave a far fairer price for the job than I'd been quoted from others.”
Why these companies made our list
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