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Create and Maintain the Air Gap

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important steps for hardscape against a house. #paverpatio #hardscape

What happens here

Crucially, a small air gap, typically 1/2 inch to 1 inch, must be maintained between the independent paver structure (sitting on the new support wall) and the house's siding or foundation. This gap ensures continuous airflow, which is vital for preventing moisture from becoming trapped and leading to rot, mold growth, or insect issues in the house's wooden components. During the construction of the paver structure, ensure that no material bridges this gap, allowing for free air circulation. This air gap is as important as the structural support for long-term house preservation.

Goal: Ensure an adequate air gap between the paver structure and the house for moisture prevention and ventilation.

Tools and materials

  • Caulk Gun Various manufacturers — Applying sealant around the window or door frame to prevent water intrusion, separate from the air gap
  • Sealant / Caulk Various manufacturers
  • Spacers — Temporarily ensuring a consistent gap during paver placement