Zavza Seal LLC

Zavza Seal LLC is a Brooklyn waterproofing contractor serving homeowners and property managers across Brooklyn, Queens, the Bronx, and Long Island. Services include basement waterproofing, foundation waterproofing, interior foundation waterproofing, crawl space waterproofing, and roof waterproofing, plus attic insulation, mold remediation, drainage solutions, foundation repair, and concrete crack repair. Founded in 2001, the company is based at 1206 Avenue J in Brooklyn and is known for thorough inspections, clear written estimates, and long lasting waterproofing systems.

Four service lines sit under the one company: general contracting, waterproofing, insulation and concrete. That combination is deliberate for the housing stock it works on, where a wet basement is rarely only a waterproofing problem. Fixing it often means concrete work and insulation in the same visit.

The commercial terms are set out plainly on the site, and they are worth knowing before calling. Estimates are free. There is a financing page, a warranty program, and a rebates page, plus a referral program for existing customers. The company’s stated standard is 100% guaranteed customer satisfaction, and it emphasises open communication and affordable pricing rather than lowest cost.

On materials, the company states it uses eco-friendly, state-of-the-art products and describes its approach as built on innovative, environmentally friendly products. For insulation and basement work, that choice affects indoor air quality as much as performance.

Credentials are specific rather than general. The company holds EPA Lead Paint Certification, which is a legal requirement for disturbing painted surfaces in homes built before 1978, a large share of the Brooklyn and Queens housing stock. It also states its work is backed by professional certifications and licenses that meet New York standards.

The coverage area is drawn tightly and stated consistently: Long Island, including Suffolk and Nassau counties, plus Brooklyn, Queens and the Bronx. The company describes itself as deeply rooted in those local communities, and publishes a separate insulation page for Brooklyn specifically.

A resources and blog section covers home preparation guidance, and the team is described as certified professionals with a mission framed around making homes comfortable, functional and beautiful. It has been working in construction for over 30 years by its own account.

The Brooklyn number is (718) 957-0334.