
Serving Port Jefferson, NY and surrounding areas
Approved
In business since 1981
Free estimates
Warranties offered
"From beginning to end excellent work and extremely satisfied"





+180


Serving Port Jefferson, NY and surrounding areas
Approved
In business since 1981
Free estimates
Warranties offered
"From beginning to end excellent work and extremely satisfied"





+180
Serving Port Jefferson, NY and surrounding areas
Approved
In business since 1990
Free estimates
Emergency services offered
"James and Mike also did the foundation and patio work as well as walls and steps. They are simply the most professional yet friendly people to to do business with. Their attention to detail and quality of execution is simply amazing. Highly recommended!!!"





+22
Serving Port Jefferson, NY and surrounding areas
Approved
Super Service Award Winner
In business since 1984
Free estimates
Customers say: Terrific value
"Jack and his crew were thorough, professional and courteous throughout the entire waterproofing project for the basement, which included outside drainage work to better direct water away from the house, and the foundation repairs that were needed. He provided a detailed estimate and explained all facets of the project. Jack also provided additional recommendations for repairing the house gutters and downspouts. The home was built in the 1940's and the basement would flood following rain. Since the repairs, three rain storms within five weeks, each with over 3 inches of rain, have occurred and the basement waterproofing project was immediately tested. It has remained dry!"





Serving Port Jefferson, NY and surrounding areas
Approved
In business since 1978
Free estimates
Warranties offered
"The entire process was great. Every step of the way they checked to ensure it was the way we wanted it. The end result was great like having a new yard. Would not hesitate to have them do more work ."





+20

Serving Port Jefferson, NY and surrounding areas
Approved
Super Service Award Winner
In business since 2017
Free estimates
Emergency services offered
"This was a professional job from start to finish. Channel drain project. Every aspect was done correctly. Slade explained, gave me my options, and then showed up as scheduled to do the job. He takes a lot of pride in his work. He used concrete to set the drains in place to make sure they will not shift over time. He was careful about the pitch of the drains. Left a neat work site. I have no doubt the installation will last a long time. Works very well. Worth every dollar. No need to look any further. 5 stars."





+88

Serving Port Jefferson, NY and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"I had a crack in my foundation that needed to get repaired quickly. They did a fantastic job and were a pleasure to deal with. I recommend them for anyone that’s in the same position that I was!"



Serving Port Jefferson, NY and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Company was prompt in response very reasonable and effectuate with the repair the same day. Thanks much exclamation. Thanks, Eddie."





+172

Serving Port Jefferson, NY and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"Sal and his group were wonderful. They came on time, they did a beautiful job, and even came back the next day after being paid in full for the job to fix something for me. I would highly recommend them"





+104

Serving Port Jefferson, NY and surrounding areas
Approved
In business since 2012
Free estimates
Credit card accepted
"Excellent communication- resurfaced my patio and added a new walkway - professional and cleaned up after"





+67

Serving Port Jefferson, NY and surrounding areas
Approved
In business since 2024
Free estimates
Credit card accepted
"Alex was amazing!! We had a crack in our foundation that another company attempted to repair numerous times. We were fortunate enough to hear about ProSeal and I am happy to report not only did Alex repair the crack to near perfection but the work was done timely, neatly and his customer service skills are top notch. I would HIGHLY recommend ProSeal for all of your foundation needs."
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