How many insulation & weatherization contractors are in CLAYTON, CA?

3 with a current California license, as of 2026-08-31.

How do I check a California contractor license is current?

Every listing shows its state license number and expiry date. Verify any of them directly against the California CSLB licensee database.

Insulation & Weatherization contractors in CLAYTON, CA

3 listings

Source: California CSLB license records. Last verified 2026-08-31.

There are 3 insulation & weatherization contractors in CLAYTON, California with a current state license as of 2026-08-31. The earliest license expiry among them is 2027-04-30; every listing shows its own number and expiry date. All are drawn from the California CSLB register; expired and inactive licenses are excluded.

Business	License	Type	Expires	City	Zip
CHRISTIAN HVAC	1029082	B, C-2, C-20	2027-07-31	CLAYTON	94517	Set up workspace
G N HENLEY INC	373161	A, B, C-2, C-6, C-8, C-12, C-21, C-27, C-33	2027-04-30	CLAYTON	94517	Set up workspace
J & R FLOOR SERVICES	714096	B, C-2, D06	2027-10-31	CLAYTON	94517	Set up workspace

Quick answers

How many insulation & weatherization contractors are in CLAYTON?: 3 with a current California license, as of 2026-08-31.
How do I check a license is current?: Every listing shows its state license number and expiry. Verify any of them directly against the California CSLB licensee database.