Licensed Insulation & Acoustical (C-2) contractors in Grass Valley, CA

The California Contractors State License Board (CSLB) lists 3 Insulation & Acoustical (C-2) contractors in Grass Valley, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of August 11, 2026.

3 contractors

1. Foam King

   Grass Valley, CA · CSLB #1027544 · as of August 11, 2026
   Active · clear
2. Gold Country Roofing

   Grass Valley, CA · CSLB #453905 · as of August 11, 2026
   Active · clear
3. Mountain Insulation

   Grass Valley, CA · CSLB #1137068 · as of August 11, 2026
   Active · clear

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Data sourced from the California Contractors State License Board (CSLB), current as of August 11, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.