Compare the highest-rated insulation professionals in Rohnert Park, California. All contractors are licensed, insured, and verified through our rigorous screening process.
A well-established, family-owned and operated insulation contractor serving Sonoma County for decades. They are highly regarded for their professionalism, expertise, and focus on energy-efficient solutions. They offer a wide range of insulation types and are known for their thoroughness in both installation and air sealing.
A local contractor that has built a strong reputation specifically for residential insulation upgrades and energy efficiency improvements. They are praised in customer reviews for their clear communication, knowledgeable staff, and attention to detail, particularly in attic insulation and air sealing projects.
A long-standing, local company known for its reliability and high-quality workmanship across Sonoma County. They offer comprehensive insulation services for both new construction and existing homes, with a strong focus on customer satisfaction and adhering to local building codes and standards.
** The insulation market in Rohnert Park and the surrounding Sonoma County area is characterized by a small number of highly specialized, long-standing local contractors rather than a high volume of competition. The quality of service is generally very high, as these established companies rely on reputation and repeat business. Due to California's strict Title 24 energy codes and the local climate—with cool, damp winters and desire for cool interiors in summer—there is a strong emphasis on comprehensive solutions that include air sealing alongside insulation. The competition, while not saturated, is fierce among the top-tier providers, who differentiate themselves through specialized expertise (e.g., spray foam vs. dense-pack cellulose), customer service, and knowledge of available rebates from providers like PG&E. Typical pricing is at a premium compared to state averages, reflecting the high cost of living and business in the North Bay. Homeowners can expect project costs to vary significantly based on the insulation material (spray foam being the most expensive, blown-in fiberglass/batt being more economical) and the scope of work, but should anticipate investments ranging from $2,000 for a basic attic job to $15,000+ for a whole-home spray foam and air sealing retrofit.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Rohnert Park regulations and climate
Get answers to common questions about insulation services in Rohnert Park, California.
For a standard 1,500-2,000 sq ft home in Rohnert Park, adding blown-in cellulose or fiberglass attic insulation to reach the recommended R-38 to R-49 level typically costs between $1,500 and $3,500. The final price depends on the existing insulation depth, material choice, and attic accessibility. Homeowners should also explore rebates from Sonoma Clean Power, which can significantly offset costs for qualifying energy-efficient upgrades.
The ideal time is during our mild, dry seasons—late spring (May-June) or early fall (September-October). This avoids the intense summer heat in the attic, which can be dangerous for installers, and the winter rains that can complicate material delivery and exterior work. Scheduling during these shoulder seasons also ensures your home is optimally prepared for both summer cooling and winter heating demands.
Yes, insulation work must comply with the 2022 California Title 24, Part 6 Energy Code, which sets strict performance standards. For Rohnert Park specifically, this includes mandatory whole-house ventilation (often requiring an attic fan or similar system) and achieving higher R-values in attics and walls than older codes. Always hire a contractor who is familiar with these codes and can pull the required City of Rohnert Park building permits for the work.
Prioritize contractors who are licensed (check their CSLB number), insured, and have specific experience with Sonoma County homes. Ask for local references in Rohnert Park or nearby cities like Cotati or Santa Rosa, and verify they understand Title 24 compliance. It's also wise to choose a provider who is an authorized installer for local utility rebate programs, as they will handle the paperwork for incentives.
Absolutely, especially in older Rohnert Park homes built before modern energy codes. Our coastal-influenced climate with cool nights makes wall insulation critical for comfort. Retrofitting is practical using dense-pack cellulose or injection foam, which are drilled and installed through small exterior holes. This is a common and effective upgrade that reduces drafts, noise, and energy bills year-round.