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Thornton, CO· pop. 133,451

Mold Inspectors in Thornton, Colorado

Thornton is a city in Colorado, home to roughly 133,451 residents. Its semi-arid (steppe) climate brings low humidity (35–55% annual average), which makes local homes prone to Cladosporium and Aspergillus growth after leaks, flooding, or poor ventilation. Compare mold inspection, testing, and air-quality professionals serving Thornton below. Colorado has no statewide mold license, so verify each inspector's IICRC or ACAC certification and insurance.

Mold inspectors serving Thornton

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Colorado Mold Information
Climate Zone
Semi-arid (Steppe)
Köppen primary classification
Humidity Level
Low year-round (35–55% annual avg)
NOAA NCEI 1991–2020 normals
Common Mold Types
Cladosporium, Aspergillus, Penicillium
Per EPA mold guidance
Weather considerations

Generally dry, but indoor mold appears around basement waterproofing failures and post-snowmelt foundation seepage.

State licensing

Colorado does not have a state-level mold-license requirement. Verify each pro's industry certifications (IICRC, ACAC, etc.) and proof of insurance before hiring.

Local factors
  • Thornton's dense, mixed-age housing stock — including older multi-family buildings — can trap moisture behind walls and shared plumbing.

Sources: NOAA climate normals; EPA mold guidance; state licensing authorities. See our data sources.

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