Sierra Insulation has been serving the foothillsand mountainsfor nearly 30 years. Sierra Insulation can handle Custom residential, commercial and retro applications. We are fully insured andbonded and are licensed in California and Nevada. We are proud to be members of the Nevada County contractors Association, Placer County Contractors Associationand Contractors Association of Truckee-Tahoe. Sierra Insulation offers a full line of insulation including expanding spray foam, formaldehyde free fiberglass, cellulose, cocoon thermal and radiant barrier.