Find top-rated spray foam contractors and save up to 35% on energy bills
Compare 2 verified spray foam insulation contractors serving Trenton, New Jersey, backed by 618 customer reviews averaging 5.0★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Trenton contractors handle both open-cell and closed-cell spray foam. Homeowners here typically cut energy bills by around 35% — get free quotes and read verified reviews below.
Homes in Trenton typically cut energy use by 30%–40% with spray foam. Change the numbers below to fit your home.
These are estimates, not quotes. Actual savings vary based on home size, current insulation, energy rates, and climate conditions. Savings estimates are based on Department of Energy data for the Cold climate zone. Cost assumes the attic roofline (about 1.15× your home's square footage) at typical installed prices of $0.40–$0.65 per board foot for open cell and $1.00–$1.50 for closed cell; a two-story home has less roof and usually costs less. Get quotes from the contractors below for real prices.
Recent Reviews:
I had an excellent experience with Koala Insulation from start to finish. Tom came out to give the estimate and took the time to explain everything clearly. Anthony, the manager, kept me updated at every stage of the project and made sure everything went smoothly. Tylor and Raul did the insulation-they were professional, friendly and efficient. The work was completed on time and done with great attention to detail. It’s rare to find such great communication and quality workmanship these days. I highly recommend Koala Insulation.
This is a first class outfit. Always polite and on time. I had a small crawl space to insulate and needed R30 so foam was my only real option. Not the best of working conditions since the space was a little tight but the guys got it done just as well. If you need insulation work done I highly recommend them.
Koala personnel were all very professional, excellent communication, all questions & concerns addressed & answered fully. Installers, (Anthony & Tyler) were polite, prompt & perfect! Highly recommend. Thank you Koala! 8-20-25
Recent Reviews:
Jamal and his team arrived on time, were courteous, professional, and completed the old attic insulation removal & re-installation in one day. The attic looks 100% better now that all air gaps have been sealed and with fully blown in insulation replacing the old fiberglass batting. They did a great job of cleaning up at the end and made sure to cover and protect everything during the process. The whole process of working with this team has been easy and efficient. I would definitely recommend them. We did have another insulation team quote on the project and the prices were comparable, so I wouldn’t hesitate with going with Home Insulation Experts from the start.
Home Insulation Experts Inc exceeded all expectations. Liad came to my house twice to explain everything in detail. He was a complete professional and was super knowledgeable and trustworthy. On project day, Jamal showed up with his team. They took great care in prepping the house with plastic and to make sure we understood what the plan was for the next two days. Long story short. We are thrilled with the results. Right now as I write this review its 98 degrees outside and normally my 2nd floor would be at least 85 degrees and really uncomfortable. Today the house feels so much better than it did for the past 22 years. Lastly, they have a follow up crew that came back to the house a few days later to make sure everything was done right. We're super happy we chose Home Insulation Experts. We should have done this 10 years ago.
We are VERY happy with home experts. A truly stand up company. They went above and beyind to fix an issue that honestly wasnt their fault. Including the owner personally coming out to get on the ladder himself to fix it! Many other companies would have cleaned up and left it as is saying its not their problem, but they made sure to fix it n treat it as they would their own home. The original HVAC installers left the return vents open to the bays instead of piping it in and when they went to fill insulation into the attic it came into 2 rooms. They cleaned up everything as if there were never there and fixed the issue so we could turn on our AC on. From the quote to scheduling the job they were VERY easy to work with. They were honest where they said we could qualify for a rebate. But they dont schedule the job until it got approved, so you know is good to go. The crew including Jamal was very respectful tapping up everything and cleaning up so they left the house better than they found it.
These are the questions Trenton homeowners ask most about spray foam cost, R-value, and open- vs. closed-cell foam — with context for local pricing and roughly 35% typical energy savings. Compare the 2 verified Trenton contractors above for exact quotes.
Not finding the right fit in Trenton? Many spray foam contractors travel to nearby towns. These communities within about 60 miles all have verified contractors listed.