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  "name": "How do spray foam and fiberglass batts compare for moisture management?",
  "description": "Closed-cell spray foam provides insulation and a vapor barrier in one step. Fiberglass batts require separate air-sealing and vapor membranes to control moistur",
  "url": "https://totalbuildingsystems.net/faq/how-do-spray-foam-and-fiberglass-batts-compare-for-moisture-management",
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      "name": "How do spray foam and fiberglass batts compare for moisture management?",
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        "text": "Closed-cell spray foam acts as both an insulation layer and a built-in vapor retarder, while fiberglass batts require a separate, carefully detailed vapor and air barrier. Closed-cell foam creates a rigid, airtight seal that blocks bulk water and vapor movement, which is beneficial in crawlspaces and exterior envelopes. Fiberglass offers a lower upfront installation cost and easy adjustment around utilities, but it remains vapor-permeable and relies entirely on external house wraps or interior membranes to manage humidity.",
        "description": "Closed-cell spray foam provides insulation and a vapor barrier in one step. Fiberglass batts require separate air-sealing and vapor membranes to control moisture."
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