Contact us

Diamond Masonry & Waterproofing LLC has been providing professional waterproofing and masonry solutions to homeowners across Long Island for over 15 years. As a family-owned business serving Nassau County, Suffolk County, and the Town of Freeport, we take pride in delivering personalized service, quality workmanship, and lasting solutions. 

Hours 

Monday – Saturday: 7:00 am – 6:00 pm

Sunday: Closed