Serving Princeton Junction, NJ
Master Attic air seals and insulates attics, removes contaminated insulation, encapsulates crawl spaces and rodent proofs attics and crawl spaces across Princeton Junction, New Jersey, whether your house is a 1920s Berrien City original, a 1980s commuter colonial, or a townhome built near the station in the last decade. Free estimates anywhere in Mercer County.
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Princeton Junction's oldest attics sit over the 1920s houses in Berrien City, filled in over the decades by the post-war ranches of Sherbrooke Estates and Windsor Chase and then by the two-story colonials built through the 1980s and 90s. Those bigger colonials often carry a two-story foyer, a bonus room over the garage and a cathedral ceiling, each one an unsealed chase that leaks heat into the attic.
Also in attic services: New Insulation InstallationBlown-In Attic InsulationAttic SanitizingBaffle VentsAir Duct Repair & Replacement
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Squirrels chew wiring and tear up insulation once they get into an attic. We remove them and close the entry points.
Squirrel Removal →A raccoon can wreck attic insulation and ductwork in weeks and leave dangerous droppings behind. Safe removal plus repair of the damage.
Raccoon Removal →Bats roost in quiet attic corners and their droppings contaminate everything below. Humane exclusion plus full cleanup.
Bat Removal →Mice squeeze in through gaps the width of a pencil, nest in the insulation and leave droppings across the attic floor. Removal, then sealing the gaps so they stay out.
Attic Mice Removal →Wildlife tears openings where the roof meets the walls, and every gap is an open door. We seal the entry points and repair the damage.
Rodent Proofing →Thin, patchy insulation lets heated and cooled air escape into the attic all year. Upgrading it cuts energy bills.
Attic Insulation →Moisture in the crawl space feeds mold and rots the framing under your floor. Encapsulation seals out the damp ground air.
Crawl Space Encapsulation →New batts fill every joist bay edge to edge, so heated and cooled air stays in the rooms below instead of bleeding into the attic. Lower bills, even temperatures.
Attic Insulation →A vented ridge lets hot, moist air escape at the peak while baffles keep the soffit intake open. Balanced airflow protects the roof deck and keeps the new insulation dry.
Attic Ventilation →The roofline gap the wildlife used is sealed with rodent-proof mesh and sealant, along with every other opening we found. Nothing gets back in.
Rodent Proofing →Droppings, nesting debris and the contaminated insulation are gone, and the framing is treated so odors and bacteria do not linger in the air you breathe.
Attic Cleanup →A sealed vapor barrier covers the ground and walls, so damp soil air can no longer feed mold or rot the floor framing above it.
Crawl Space Encapsulation →What is going wrong here
What changed
Princeton Junction's train station turned a farm crossroads into a commuter suburb, and the housing shows it: a small 1920s core in Berrien City, ranches and colonials from the 1960s through 80s, and colonials from the boom that ran through the 2000s. Each era left its attic and crawl space short of today's standards in a different way.
Most Princeton Junction colonials and ranches were insulated to their decade's standard, well under what current guidance calls for in attics across this part of New Jersey.
Raised ranches and split-levels sit over vented crawl spaces while the surrounding colonials use full basements, and Mercer County humidity works into both, souring the air and sagging the insulation above.
Squirrels and raccoons ride the hardwood tree lines that still edge West Windsor's newer developments, and soffit gaps on older houses near the station let them onto the roof unnoticed.
Central Jersey winters swing above and below freezing for weeks at a stretch, and every degree of warm air that leaks into an underinsulated attic turns into an ice dam at the eaves.
Our crews cover Mercer County daily. Free estimates, no obligation.
Homeowners in Princeton Junction, NJ usually call us about one of four things showing up in the attic or crawl space.
Better insulation. Sealed gaps. Cleaner air. Lower bills.
BeforeAfterHear What Our Customers Are Saying
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.
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Many of Princeton Junction's raised ranches and split-levels sit over a vented crawl space rather than a basement, and Mercer County's humid summers pull damp air through those vents most of the year. Once that moisture sags the insulation or leaves a musty smell upstairs, a sealed vapor barrier across the ground and walls goes in to shut it out.
West Windsor is PSE&G territory, and PSE&G runs efficiency rebate programs alongside the statewide NJ Clean Energy Program that can apply to insulation and air sealing work. Program details and rebate amounts change, so we point you to the current PSE&G and NJ Clean Energy Program listings and can walk through eligibility during your free estimate.
The two-story foyers, bonus rooms over the garage and cathedral ceilings common in the colonials built here through the 1980s and 90s each open an unsealed chase straight into the attic. Warm air rides up through those chases in summer and escapes through them in winter, so the second floor lags behind no matter what the thermostat says. Sealing those chases first, then adding insulation, closes that gap.
Thumping or scratching overhead around dawn and dusk, droppings scattered along the joists, chewed wiring and shredded insulation balled into a nest are the usual signs of squirrels or raccoons. Around here the culprits climb in from the tree canopy near Berrien City and Grovers Mill and work a gap open at the soffit, so check the roofline first, not the foundation.
A single crew can usually finish a straightforward attic in an older Berrien City house without much trouble. The two-story colonials common in the newer sections take longer to access, and if old insulation needs to come out first or there's rodent cleanup involved, the job takes longer still. Your estimate spells out which one applies before work starts.
Plainsboro, Princeton, East Windsor, Hightstown and Cranbury are all a short drive from Princeton Junction, and we're out in each of them regularly for attic and crawl space work, along with the rest of Mercer County and up the Route 1 corridor into Middlesex County towns like North Brunswick.
Princeton Junction is a census-designated place, not an incorporated town: the address sits inside West Windsor Township, and the two names are used almost interchangeably around the train station. We work under either name, so whether your mail says Princeton Junction or West Windsor, the attic and crawl space work is the same.
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A damp crawl space drives up energy bills and feeds mold. Learn what the moisture under your floor is doing and how encapsulation stops it.
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