Master Attic did a phenomenal job with our attic insulation and duct replacement. We had a loss from smoke damage from a neighboring fire and we were met with compassion and excellent customer service from Danny Jones and Jorge Diaz. We chose them for their quality of work, expertise and fair pricing and they got the job done promptly. Thank you for the excellent work and we will be recommending you highly!
Vapor Barrier · Sealed Walls · Cleanup · Insulation
Crawl Space Encapsulation in North Brunswick, New Jersey
Master Attic installs a vapor barrier across the ground and walls of a North Brunswick, New Jersey crawl space, shuts off the vents feeding it outside moisture, and gets it ready for new insulation, on Main Street corridor construction and Maple Meade or Berdines Corner originals alike. Free estimates anywhere in Middlesex County.
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How We Encapsulate a Crawl Space in North Brunswick
Sealing a crawl space against ground moisture means covering the dirt floor and foundation walls in a heavy-duty liner and shutting the vents that had been letting outside air drift in underneath. Parts of North Brunswick sit on clay-heavy, slow-draining ground that holds water long after a storm passes, which makes an unsealed crawl space one of the damper spots on a Middlesex County property.
That trapped humidity travels upward into the living space above, waterlogging insulation, chilling the floor and eventually working a musty smell into the rooms overhead. It is most pronounced under the older single-family stock, where the crawl space has been vented straight to the outside since the house went up decades ago, though newer construction on low ground can carry the same problem.
We look at the ground, the vents, whatever insulation is already down there, and the foundation walls before recommending anything, because what a specific crawl space needs depends on how wet it already is and how it was built. From there we install the liner, close off the vents and gaps, and, when the old insulation is too far gone to keep, pull it so the new barrier goes down over a clean floor. The estimate is free and written.
What Crawl Space Encapsulation in North Brunswick Includes
Six related steps that come with sealing a North Brunswick crawl space. Every estimate opens with a look at the crawl space itself, at no charge.
What We Find in North Brunswick Crawl Spaces
These four conditions are what typically bring a North Brunswick, NJ homeowner to call about encapsulation.
An open crawl space vent keeps pulling in damp air for days after a storm on the township's slower-draining streets, long enough for the insulation underneath to soak through and the floor above to stay noticeably cold.
Open foundation vents were standard practice on the ranches and capes going up around Maple Meade and Berdines Corner in the 1950s and 60s, a design choice that lets outside humidity move freely under the house rather than keeping it out.
Mice and other small animals target a damp, unsealed crawl space far more than a sealed one, slipping in through an open vent or a gap beside the crawl door, so encapsulation shuts off an entry point right along with the moisture problem.
Some of the newer building along the Main Street corridor sits on ground low enough to carry the same slow-draining conditions as the older sections, so a young crawl space can need encapsulation as much as a decades-old one.
Our 4-Step Process
- 1InspectWe evaluate your attic or crawl space and find the real issues.
- 2RecommendYou get clear solutions and a detailed, honest estimate.
- 3InstallOur in-house crew gets the job done right the first time.
- 4GuaranteeWe stand behind our work and help keep your home protected.
Real Results. Healthier Homes.
Dry ground. Sealed walls. Cleaner air upstairs. Lower bills.
Hear What Our Customers Are Saying
Read Five-Star Reviews From New Jersey Homeowners
We just had our attic insulation replaced, and the entire experience was pleasant from start to finish. Robert is knowledgeable, honest and easy to work with at the initial estimate period. Roberta and his crew did a great job replacing the attic insulation for our house. They were very professional, efficient and respectful. They did everything that needed to be done and left the space clean and in excellent condition. I am very happy that I chose Master Attic and would highly recommend them.
Dan Jones and the Ronald crew did a great job from start to finish! I had original insulation in my attic with no electricity, not an easy job. Our upstairs was very hot in the summer and cold in winter. With having central air, we still needed AC units and space heaters to manage. Dan set up a great plan to eliminate that. He and his crew were able to come and finish the job shortly after we first met. They were quick, clean and managed to crawl into small spaces to remove old insulation and install fresh insulation. We have already noticed a major difference! Highly recommended!!
We hired Master Attic to clean out debris, mice, old insulation, and replace with new insulation in both our attic spaces. Roberto and his crew did a phenomenal job. They were extremely professional, polite, and did a fantastic job. They invited my husband to see the attic after each step, and took pictures on their phone to show me since I could not get up in the attic. They took the time to protect the space with plastic sheeting before the job up in the attic, and then cleaned up everything perfectly afterwards. I highly recommend them!
Great job by the team. Cleaned out the entire attic and replaced all the old insulation with new fresh insulation. Made a huge difference. Alex was great to work with and was very professional. Would highly recommend.
Awesome experience from start to finish. Rob provided a great assessment and capabilities overview, arrived on time and was very generous and thorough in explaining the work. I signed on the spot. A crew of six arrived (again, on time) and completely transformed our attic space - thoroughly cleaned out the old insulation (looked spotless afterwards), sanitized the space, sealed it/rodent proofed it, added baffles and of course, replaced the insulation and added more in areas that needed it. Completed the whole job in half a day and we are delighted with the result. Thank you, Master Attic team, for a job very well done! Highest recommendation.
What a great experience I had with this company and its employees. It started with initially interacting with Joe who came out for the estimate. He was funny because he came down from my attic and said "have you seen up there". I laughed because I had and I knew it was bad. He was no pressure and no nonsense. Gave me an estimate and said if I wanted we could have the work done next day. I wasn't ready for that but after some schedule juggling I told him we could be ready. Joe had his guys out next morning with the best part being Jorge calling me to advise he was about thirty minutes out. I appreciate when I am given a heads up as to ETA. Three of them arrived Jorge set out plastic and covered exposed furniture. Jorge, Angel and Gonzalo were all polite and worked hard to complete the task. They worked efficiently and were done quickly. Jorge made sure he included me in each step of the process and when I saw the finished product I was amazed. I can actually use my attic for storage if I choose to do so. I did not realize when they were here that they also do work on crawlspace areas. I will be calling them back to see what they can do for my crawlspace which easily rivals the diasaster called my attic. I recommend at least giving this company and its employees an opportunity to help you.
Great company to work with. From beginning to end, Dan came out, spent plenty of time with me going over everything that needed to be done, and the process of everything that needed to be updated it both attics. His professionalism was top notch, answered all my question and concerns. When it came time for George and his six-man crew to do the work their quality of workmanship was well above average, they were here the whole day, and I don't think they even had a lunch break (hopefully I don't get him in trouble). They all worked and everyone knew what their job was, they removed all the insulation, cleaned, spray foamed all holes and top plates, re-insulated both attics and cleaned up like they weren't even here. Will definitely use them again.
Master Attic remediated a bat issue for us back in October and I can’t say enough about what a wonderful job they did. The work was guaranteed and they encouraged us to call if we say any further evidence of bats. Well, there were a few droppings in the attic and they quickly responded to our concerns. Jose’s crew came out on a SUNDAY, inspected the attic, and sealed up several spots that could be entry points. They were professional, efficient, and kind. I would highly recommend them. You will not be disappointed.
Crawl Space Encapsulation in North Brunswick: Questions We Get
What is included when Master Attic encapsulates a North Brunswick crawl space?
The floor and foundation walls get covered in a heavy-duty liner, the vents and any other gaps get shut, and if the existing insulation is too wet or damaged to keep, it comes out first. Around here that usually means dealing with ground that has been holding onto moisture since the last storm, which is common on the township's lower-lying streets. An actively flooded crawl space calls for a different first step: the water gets removed and the space is left to dry before the liner goes in, and encapsulation picks up from there, keeping ordinary ground moisture from building back up once things are dry.
Do you have to pull the existing crawl space insulation before sealing it?
Only if it is wet, moldy or has already fallen out of place, something that becomes common once ground moisture has been working its way through an open vent for years. Dry material that is not in the liner's way can often be left alone. We settle it by checking the ground, the vents and the insulation in one visit.
Are there NJ rebates for crawl space encapsulation?
Moisture control and insulation work has qualified for NJ Clean Energy Program incentives in the past, and PSE&G covers electric and gas service throughout the township. Offerings change from one stretch to the next, so ask us directly and we will go over what is currently on the table.
How long does a North Brunswick crawl space encapsulation actually last?
Nobody hands you a replacement date for a properly installed liner, it is built to keep working for years without attention. Where it actually earns a second look is whenever a crew happens to already be underneath the house on a different job, confirming the seams and the vent closures have not opened up and the ground has not found a new way in.
How do you figure out what a particular crawl space actually needs?
Ground moisture, vent condition, whatever insulation is already down there and the state of the foundation walls all get checked before we recommend anything, since a ranch crawl space and one under newer construction can call for very different amounts of work even a block apart. Whatever we recommend, and why, goes into the estimate itself.
How long does encapsulating a North Brunswick crawl space take?
A vent-only seal on a small, dry ranch crawl space near Maple Meade goes quicker than a larger one carrying standing water history, old insulation to pull, or extra vents and gaps to close. Exact timing needs eyes on the crawl space itself, so we work it out on the inspection and put it in the written estimate.
Do you encapsulate crawl spaces outside North Brunswick too?
Middlesex County is our home territory, so East Brunswick, South Brunswick, New Brunswick and Milltown all get the same crawl space work North Brunswick does. We also handle Franklin Township, which sits just across the county line in Somerset County and shares a lot of the same low, damp ground.
My crawl space already has a plastic sheet down. Isn't that the same thing?
Not usually. A loose sheet of plastic laid over the dirt is a start, but it is not sealed at the seams, walls or vents the way a full encapsulation system is, so moisture still finds a way around the edges. We can tell you during an inspection whether what is already down there is doing its job or just covering the problem.
Ready for a Dry, Sealed North Brunswick Crawl Space?
Free inspection and a written estimate, no obligation.
- No Obligation
- Upfront Pricing
- Local & Trusted
Service area
Crawl Space Encapsulation near North Brunswick, New Jersey
Not on the list? Call (800) 285-4009
- North Brunswick
- All North Brunswick attic & crawl space services New crawlspace insulation Crawlspace insulation removal Rodent proofing Attic cleanup Attic insulation removal Attic insulation Crawlspace & basement cleanup Raccoon removal
- Nearby
- Crawl Space Encapsulation in Somerset and Princeton Junction.
- Coverage
- All of Middlesex County and the towns around North Brunswick: New Brunswick, Milltown, East Brunswick, South Brunswick, Somerset and Princeton Junction. The full list is on the New Jersey service area page.


