5 Best Insulation Services in San Diego (2026)

What people praise

• One reviewer describes a thorough quote breakdown and updates on the schedule and each stage of an attic and crawl space job
• Crews that sealed off work areas and took photos to document the work, per one reviewer
• One reviewer says the estimator reworked the plan around how the home's system runs, and the cheaper plan fit better
• An attic storage conversion with custom work on the attic door gets a detailed write-up from another reviewer

Worth knowing

• Estimators and install crews are separate teams, with different people at each stage of a job

What people praise

• No-pressure estimates, according to reviewers
• Crews that arrive on time and leave the house clean
• One reviewer says the owner used a thermal imaging camera to show where heat was entering the house
• Old insulation removed, the attic cleaned and sanitized, and new R-38 batts installed, per one reviewer

Worth knowing

• Based in Santee, so ask about scheduling for your part of San Diego

What people praise

• Reviewers describe crews that cover floors and walls, vacuum out old insulation, sanitize and install new insulation
• Free estimates, and one reviewer mentions a one year warranty on rodent proofing
• A reviewer who had 50-year-old insulation removed says the crew was courteous and left the house clean

Worth knowing

• One reviewer needed a return visit to finish a rodent-proofing job, which the company handled at no cost
• San Diego is one of several locations of a multi-state company

What people praise

• One reviewer who had spray foam applied to attic rafters in El Cajon reports attic temperatures dropping from about 130 to roughly the outside air temperature
• Quick replies and same-day visits, according to a crawl space reviewer
• A free inspection that ended with advice to clean the ducts rather than a sales pitch, per one reviewer
• Crews that came back the next day to correct an item found in the documenting photos

What people praise

• Reviewers describe protective plastic over work areas and step-by-step updates during the job
• One reviewer says the quote came in far below another contractor's, saving four figures
• A homeowner who suspected rats was told after an inspection that no work was needed
• Rodent entry points sealed and the attic disinfected, according to one reviewer