0 Best Mold Assessment Pros in Portsmouth, NH (Verified 2026)

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New Hampshire Mold Information

Climate Zone

Northeastern Continental

Moderate to high (50-70% average)

Humidity Level

Moderate to high (50-70% average)

Common Mold Types

Cladosporium, Penicillium, Aspergillus

Weather Considerations

Primary mold risks come from basement moisture caused by freeze-thaw cycles affecting foundations. Older housing stock presents higher risk of hidden mold in pipe chases and uninsulated exterior walls.

Mold Remediation in Portsmouth

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New Hampshire Mold Information

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