Sierra Insulation Co. Inc.

Feb 13, 2026 8:26 PM

880 Whispering Pines Lane
Grass Valley, CA (California) 95945-9370
(530) 272-7****

Business Details

37 years Since 1978 Clark Gillis (Owner) (530) 272-8516 (Fax)

Products:	Radiant Heating
Services:	Custom Design, Custom Work, Residential Services, Domestic, Homeowners, Homes
Professionals on Staff:	Contractors
Certifications:	Bonded, Insured
General Content:	041230Attr:metal Building, 124080Attr:fiberglass, Stabilized Cellulose
Credit Rating:	Excellent
Sales Volume:	2M - 5M
Employee Size Range:	20-49
Franchise/Chain:	Standalone
Number of PC's:	2-9
Square Footage:	2500-9999
Fortune 500:	No

Additional Categories

Sierra Insulation Co. Inc. is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

General Contractors & Building Contractors
Insulation Contractors
Insulation Materials

North American Industry Classification System (NAICS) Categories:

New Single-Family Housing Construction (Except Operative Builders) > Contractors, General
Drywall And Insulation Contractors > Insulation Contractors
Other Building Material Dealers > Insulation & Energy Conservation Materials > Insulation Materials

Standard Industry Classification (SIC) Categories:

General Contractors - Single-Family Houses > General Contractors - Residential
Plastering, Drywall & Insulation > Insulation Contractors
Lumber & Other Building Materials > Insulation & Energy Conservation Materials > Insulation Materials

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