Family Owned and Operated Since 1982

At Masterguard, we have been family-owned and operated since 1982. We’ve grown from a small, local business to one of the largest insulation companies in the Central Valley Area. We pride ourselves on our attention to detail, and it shows in the quality of work we do.

Our founder was behind the R rating systems for insulation and worked on establishing industry standards. He always focused on precision and quality—and we’re proud to continue that tradition.

We save people money on energy consumption by insulating their properties more efficiently than other companies do. We’re confident that when you choose Masterguard for your next project, you’ll get superb results at an unbeatable price.