Problem:

A homeowner in Southampton, NY was facing ongoing moisture issues in both the basement and crawlspace, along with growing concerns about long term structural stability. Signs of water intrusion, deteriorated masonry, and mold growth were affecting indoor air quality and raising questions about the safety and durability of the home. The crawlspace lacked proper moisture control, and the basement walls had existing coatings that were failing and trapping moisture against the masonry.

Given the coastal environment and high groundwater conditions common in Southampton, the homeowner needed a comprehensive solution that addressed moisture, air quality, and structural support at the same time.

Solution:

Zavza Seal designed and executed a full scale basement and crawlspace remediation project focused on moisture control, structural reinforcement, and long term durability. Every phase of the project was completed to professional grade standards with extensive protective measures to safeguard the home during construction.

HEPA filtered air scrubbers were operated throughout the project to maintain clean air, contain dust, and prevent the spread of mold spores. All appliances, furniture, walkways, and access points were fully protected, and demolition debris was removed daily to keep the home safe and orderly.

Scope of Work:

Crawlspace Encapsulation and Structural Reinforcement

• Fully encapsulated the crawlspace measuring 13 by 22 by 2 feet with a 20 mil commercial grade vapor barrier
• Sealed the vapor barrier to all walls and columns while maintaining a 3 inch inspection gap from sill plates
• Sealed rim joists with foil faced insulation providing an R 18 value to improve energy efficiency and block moisture entry
• Installed three new reinforced concrete footings, each 2 by 2 by 1 foot, formed and poured in place
• Installed a load rated LVL beam spanning the full width of the crawlspace
• Supported the beam with 4 inch diameter concrete filled steel lally columns set on the new footings
• Resealed and closed off both crawlspace entrances to preserve the encapsulation system
• Removed all debris generated from the work and left the area clean

Basement Waterproofing and Mold Treatment

• Mechanically ground and removed all existing Drylok and coatings to expose clean, sound masonry
• Repaired deteriorated and missing mortar joints using high strength mortar for structural reinforcement
• Applied two coats of 6,000 PSI waterproof cement embedded with fiberglass mesh for long term water resistance
• Mechanically cleaned exposed wood joists to remove mold growth
• Treated all wood surfaces with EPA approved mold killing agents and applied a fungicide coating to prevent regrowth

Self Sustaining Window Drainage Systems

• Excavated approximately 4 feet deep at each window well to reach natural subgrade drainage
• Installed perforated drain pipe wrapped in soil separator fabric and surrounded with washed gravel
• Created gravity fed, maintenance free drainage paths with no pumps or electrical components
• Installed gravel beds at the base of each window well for immediate rainwater dispersion

Protective and Safety Measures

• Continuous operation of HEPA air scrubbers during grinding, demolition, and mold remediation
• Full dust containment with sealed plastic barriers to protect living areas
• Isolated work zones to prevent debris and dust migration
• Daily jobsite cleanup to maintain safety and minimize disruption

Results:

After completion, the home now benefits from a fully encapsulated crawlspace, reinforced structural support, and a basement protected against water intrusion and mold. Moisture levels were stabilized, indoor air quality improved, and the foundation was strengthened for long term performance. The homeowner gained a durable, self sustaining system designed to protect the property for decades.

This Southampton, NY project highlights Zavza Seal’s expertise in basement waterproofing, crawlspace encapsulation, structural reinforcement, and moisture control solutions tailored for high value coastal homes.

Why This Matters?

Addressing moisture without reinforcing structure often leads to recurring problems. By combining waterproofing, encapsulation, mold remediation, and structural upgrades, homeowners protect not only their foundation but also their health, comfort, and property value