Attic Restoration with Air-Sealing to Replace Inefficient R19 Batts in Visalia, CA

Joanna from Visalia contacted us because her home was constantly struggling with temperature control. During the summer, the rooms would overheat, and in winter, they felt drafty and cold. She was also concerned about her rising energy bills. We came out to inspect her attic and quickly found the issue: her attic only had old R19 batt insulation, which is far below what’s needed for optimal energy efficiency in our Central Valley climate. On top of that, we found signs of rodent activity and general contamination.

We recommended a complete attic restoration to fully resolve the issue. We started by removing the existing R19 batts, which were dirty and underperforming. After clearing out all insulation and debris, we sanitized the attic using Nisus DSV, a professional-grade disinfectant that eliminates bacteria, viruses, and odors—especially important given the rodent contamination.

Next, we focused on air sealing the attic. Using closed-cell foam, we sealed all common leakage points like top plates, wire and pipe penetrations, and HVAC register openings. Proper air sealing ensures that conditioned air stays in the living space, rather than escaping into the attic.

To complete the project, we installed a fresh layer of blown-in premium fiberglass insulation, bringing the attic up to the Energy Star recommended R38 level—more than doubling the insulation performance of what she previously had.

Now that the attic is restored, Joanna’s home will stay cooler in summer, warmer in winter, and more energy efficient year-round. Plus, the improved air sealing and sanitation mean she’ll enjoy better indoor air quality and a quieter, cleaner home environment.