Johnson's Insulation

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About Johnson's Insulation
Johnson's Insulation operates as a specialized insulation contractor serving the Bay Area from its Oakland headquarters. The company holds a 4.8-star rating compiled from 41 customer reviews, with work spanning attics, crawl spaces, walls, and energy audits across nine Bay Area counties. Licensing information confirms California contractor license #1051108, with the company maintaining full insurance coverage and BPI certification for energy analysis work. The team has completed over 1,200 residential projects alongside 180 commercial jobs, bringing more than a decade of hands-on experience with Victorians, mid-century homes, and new construction throughout the region.
What distinguishes Johnson's Insulation is their methodical approach paired with practical homeowner benefits. The company offers a 10% discount for seniors aged 65 and older as well as military veterans, verifiable with ID at the time of estimate. They assist customers in claiming federal tax credits up to 30% through the Inflation Review Act for qualifying upgrades, with their energy audits designed to identify rebate-eligible improvements. All technicians undergo background checks, and the company deploys modern diagnostic tools including calibrated blowers, thermal cameras, and HEPA-filtered removal systems. Quotes are returned within hours, and crews can typically be scheduled within two weeks of agreement.
Reviewers consistently mention specific team members by name when describing their experiences. Rajesh Gopalan praised Miquan for making the planning phase seamless while Oscar's crew handled implementation despite last-minute changes. Varun Nagaraja detailed how the team cleaned his dusty attic, sealed air gaps, installed pest-proofing, and finished with meticulous cleanup, covering walls and hallways to prevent damage. Rinku Daxini called out Miquan's professionalism in resolving all questions before finalizing the quote, noting the crew arrived on time, protected workspaces with plastic sheeting, completed the job in about four hours, and left the home exactly as they found it.
What Customers Say
Forty-one reviews generate a 4.8-star average, with customers frequently citing same-day responsiveness, competitive pricing versus competitor quotes, and thorough cleanup. Named technicians Miquan and Oscar appear across multiple positive reviews for planning and implementation respectively.
Working Hours
| Sunday | Closed |
| MondayToday | 8 AM–6 PM |
| Tuesday | 8 AM–6 PM |
| Wednesday | 8 AM–6 PM |
| Thursday | 8 AM–6 PM |
| Friday | 8 AM–6 PM |
| Saturday | 8 AM–6 PM |
Services
Attic Insulation
Loose-fill and batt installations meeting California Title 24 performance standards for residential attics.
Crawl Space Insulation
Moisture-aware crawl space assemblies that protect wooden framing and improve indoor air quality.
Wall Insulation
Interior and exterior wall systems for quieter, more energy-efficient living spaces.
Insulation Upgrades & Energy Audits
Air sealing and full-system upgrades, with support for rebate and tax credit eligibility.
Attic Decontamination
Complete removal, sanitization, and rodent-proofing services before insulation installation.
Federal Tax Credit Assistance
Help homeowners claim up to 30% back via the Inflation Reduction Act on qualifying upgrades.