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Foundation Wall Crack Repair in Mastic, NY
Foundation with cracks in the property in Mastic, NY.

Project Location: Mastic, NY

Service Area: Foundation Wall – Structural Crack Repair and Waterproofing


Problem

A homeowner in Mastic, NY, contacted Zavza Seal LLC to address water intrusion and structural issues in their basement. Two visible cracks in the foundation wall were causing seepage and dampness during rainfall. The concern was not only related to moisture but also the long-term structural stability of the foundation. The homeowner needed a durable, code-compliant solution that targeted both internal and external vulnerabilities.


Solution

Zavza Seal LLC conducted a detailed assessment of the foundation and proposed a two-part internal and external repair approach for both structural cracks. Our comprehensive process included the following steps:

Interior Foundation Wall Repair

  • We first opened the sheetrock along the interior side of the foundation wall to fully expose the cracked areas.
  • Each side of the crack was ground down to remove all loose materials, efflorescence, and dirt, ensuring a clean surface of bare concrete for proper adhesion.
  • Injection ports were drilled every 6 inches vertically from top to bottom along each crack to ensure even distribution of repair materials.
  • We injected the cracks with a combination of epoxy and urethane formulations, which bonded and sealed the concrete to stop active leaks and reinforce the structure.
  • Once injection was complete, we applied the first layer of Basecrete waterproofing cement to cover the cracks and injected areas.
  • A 4.5 oz fiberglass mesh by Basecrete was embedded into the waterproofing layer to add structural reinforcement and durability.
  • A second layer of Basecrete waterproofing cement was applied to seal and finish the surface completely.
  • To complete the repair, we installed new sheetrock, taped and compounded to restore the finished interior wall.

Exterior Foundation Wall Repair

  • On the above-grade exterior sections of the same two cracks, we performed a patching process to seal the cracks from the outside and prevent surface-level moisture entry.

Outcome

The homeowner in Mastic, NY, now has a completely sealed and structurally reinforced foundation wall, with benefits that include:

  • Elimination of water intrusion through cracks
  • Long-term structural stabilization using epoxy and urethane injections
  • Reinforced waterproofing with fiberglass mesh and Basecrete layers
  • Restored interior finish with new sheetrock
  • Protection against future rainwater seepage from both inside and outside

The client was extremely satisfied with the results, especially the clean restoration and comprehensive waterproofing solution.


Why Choose Zavza Seal LLC for Foundation Wall Crack Repair in Mastic, NY?

Zavza Seal LLC offers reliable foundation wall repair services across Long Island, including:

Our licensed team is known for professional workmanship, durable results, and local expertise that make us a top choice for foundation crack repairs in Mastic and surrounding areas.


Contact Us Today

Are you dealing with basement leaks or structural cracks in your foundation?

 📞 Call Zavza Seal LLC or visit www.zavzaseal.com to schedule your free inspection and estimate.

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