Vapor Barrier · Sealed Walls · Cleanup · Insulation
Master Attic seals crawl spaces throughout Princeton Junction, New Jersey with a heavy-duty vapor barrier that wraps the ground and foundation walls, closing off the humid summer air that reaches a 1960s raised ranch on Windsor Hunt as readily as a colonial built through the 2000s boom. Free estimates anywhere in Mercer County.
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Crawl space encapsulation in Princeton Junction means sealing the ground and the foundation walls with a heavy-duty vapor barrier so humid outside air stops reaching the space beneath the floor. It is built for the raised ranches and split-levels around Windsor Hunt and Princeton Ivy East that sit over a crawl space with foundation vents rather than a poured basement, the same houses where Mercer County's summer humidity works its way in through those vents every year and settles into the insulation above.
The vapor barrier covers the ground first, then runs up the foundation walls and gets sealed at the seams and around every pier, so ground moisture has nowhere left to enter. Foundation vents get closed off in the same pass, because an open vent works against a sealed floor no matter how well the barrier itself is installed.
How much barrier coverage a particular crawl space needs, and how far up the foundation wall it runs, depends on how that crawl space is built and how wet it already is, which the inspection covers before anything gets quoted. There is no charge for the inspection or the estimate, and what gets recommended covers the whole job, not just the barrier itself.
The related work that tends to come up around a Princeton Junction encapsulation job, covered by the same free inspection.
The four conditions we see most in the vented crawl spaces around Princeton Junction.
Windsor Hunt and Princeton Ivy East carry a mix of split-level and raised-ranch houses standing over a crawl space, unlike the colonials filling out the rest of town, most of which sit on a poured basement instead. That construction split changes where moisture problems show up and what an inspection actually needs to cover.
Mercer County summers push warm, humid air through open foundation vents until it meets the cooler ground and condenses, and that moisture is what turns a crawl space musty and starts pulling insulation loose from the joists above it.
A foundation vent that lets humid air through also lets a squirrel, raccoon or mouse in, and whatever gets inside typically nests in the insulation nearby. A sealed crawl space closes that route along with the moisture, which is why encapsulation and rodent proofing so often come up in the same trip.
How the vapor barrier gets fitted around the piers, ductwork and any plumbing already running through a Princeton Junction crawl space depends on how that particular space is laid out, which is why we measure and photograph it before writing the estimate rather than quoting from a phone call.
Dry ground. Sealed walls. Cleaner air upstairs. Lower bills.
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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!
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.
The ground gets covered edge to edge with a heavy-duty vapor barrier, the barrier runs up the foundation walls and gets sealed at every seam and pier, and the foundation vents get closed off so outside humidity has no way back in. It is built for the vented crawl spaces under Windsor Hunt's split-levels and raised ranches, not for a full basement.
Two things matter most: the physical footprint of the crawl space, and whatever condition it is in when we arrive. A dry, accessible space with straightforward vents goes quickly, while one with wet or contaminated insulation to remove first, or piers and ductwork that slow the barrier work down, takes longer. That timeline is confirmed in the written estimate, not guessed over the phone.
PSE&G serves West Windsor, and vapor barrier and air sealing work has qualified for utility efficiency incentives before. Exactly what is available shifts throughout the year, so ask us directly at the time of your free crawl space estimate.
Rarely, if the vents and piers were wrapped correctly the first time. We are not going to attach a specific number of years to it, since how long it holds depends partly on what happens in that crawl space after the install. Whenever we are back at a Princeton Junction property for a different job, we will check the condition of the barrier while we are under the house.
The inspection covers the ground condition, how the piers and ductwork are laid out, and how wet or musty the space already is, and that walkthrough determines how much foundation wall gets wrapped and whether any insulation needs to come out first. Every recommendation is written into the estimate, not decided after work has already started.
Yes, whenever it is wet, sagging, or shows signs an animal nested in it. Contaminated or damaged material comes out and the crawl space gets cleared first, because installing the liner over a problem that already exists just buries it instead of fixing it. A flooded crawl space is a separate situation entirely: standing water left behind by a storm has to be pumped out first, with the space given real time to dry before we ever bring a barrier into it.
We encapsulate crawl spaces regularly in Princeton, Plainsboro, East Windsor, Hightstown and Cranbury on top of our Princeton Junction work, and North Brunswick in Middlesex County, a short run up Route 1, is on the coverage list as well.
Encapsulation is built for a vented crawl space, the kind found under most of the split-level and raised-ranch houses in Windsor Hunt and Princeton Ivy East, rather than the full basements under most Princeton Junction colonials. If your house has a crawl space section alongside the basement, such as under an addition, that section can still be sealed on its own.
Free inspection and a written estimate, no obligation.
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