101 Exterminators
101 Exterminators
(831) 500-1613

Insulation Services

Insulation Installation in San Francisco, CA

Blown-In Cellulose · Fiberglass Batt · Attic & Crawl Space

After insulation removal or when installing fresh insulation in an uninsulated or under-insulated space, proper installation restores thermal performance and can incorporate pest-resistant products. 101 Exterminators installs blown-in cellulose and fiberglass, as well as batt insulation for crawl space floor installations. Serving San Francisco and surrounding San Francisco County.

Free Inspection in San Francisco(831) 500-1613

Local Context

Why San Francisco Homes Need Insulation Install Services

California Title 24 energy standards require minimum R-values that many older homes in Monterey, Salinas, and Hollister do not currently meet. Upgrading insulation in these properties reduces energy costs and meets current standards. Borate-treated cellulose insulation (such as Cocoon or similar products) provides inherent pest resistance, making it an excellent choice for attics in termite-active areas.

Drywood termites in pre-1940 framing are the dominant concern. Subterranean termites active in fog-belt soil. Real estate transaction volume is among the highest in California — WDO inspections are a routine part of every property sale. Swarm season May–October for drywood; February–April for subterranean.

San Francisco Climate

San Francisco's marine climate — persistent fog, moderate temperatures, and year-round mild humidity — supports continuous termite colony activity without winter dormancy. Western neighborhoods (Sunset, Richmond) stay foggy and moist; eastern neighborhoods (Mission, Castro, Noe Valley) are warmer, favoring drywood termite swarm activity May–October.

Housing Stock

The city has approximately 20,000+ pre-1915 Victorian and Edwardian structures, many with original old-growth redwood and fir framing never comprehensively treated for termites. Row house configurations — where buildings share party walls — allow colony spread without typical swarming evidence. Post-1906 and post-WWII construction have separate but significant termite vulnerabilities.

Why Local Expertise Matters

San Francisco termite work is a specialty. Row house fumigation logistics, the city's pesticide ordinances, historic building treatment constraints, and the specific WDO reporting format expected by SF real estate agents all require local expertise. We hold SPCB License #9119 and have direct experience with these city-specific factors.

Warning Signs

Signs You Need Insulation Install Service in San Francisco

Blown-in cellulose or fiberglass installation to achieve target R-value (typically R-38 to R-60 for California attics). Crawl space joist bay fiberglass batt installation for under-floor insulation. We work to California Title 24 standards and can provide documentation for permit purposes when required.

Attic insulation below R-19 or compressed to less than 4 inches — significant energy loss

Recent insulation removal that needs replacement

Home failing energy audit or experiencing higher-than-expected heating/cooling costs

Crawl space floor insulation missing or falling from between joists

How It Works

Our Insulation Install Process in San Francisco

Every job follows the same methodical approach — no shortcuts, no guesswork. Here is what to expect when you work with us in San Francisco.

01

Existing Conditions Assessment

We measure current insulation depth, note any areas requiring air sealing before installation, and confirm that the attic is rodent-free before new insulation goes in.

02

Air Sealing (As Needed)

Gaps around recessed lights, plumbing penetrations, HVAC ductwork, and top plates are sealed before insulation is blown in to maximize thermal performance.

03

Insulation Installation

Machine-blown cellulose or fiberglass is distributed to uniform depth and density across the attic floor or specified area. Depth gauges are placed and photographed for documentation.

04

R-Value Confirmation

Installed depth is documented and final R-value confirmed. For permit applications, we provide the necessary documentation of materials and installation specs.

Why 101 Exterminators

Insulation Install You Can Count On in San Francisco

Title 24 Compliance

We install to California energy standards with documentation for permit and utility rebate purposes.

Pest-Resistant Options

Borate-treated cellulose provides both thermal performance and inherent pest resistance — termites and cockroaches avoid borate-treated materials.

Common Questions

Insulation Installation FAQs for San Francisco

What R-value do I need for my California attic?

California Title 24 requires R-38 minimum for new construction in most climate zones. For existing homes in Monterey and Santa Cruz counties (Climate Zone 3), upgrading to R-38 or R-49 is recommended. For inland areas like Hollister and South Santa Clara County (Climate Zone 5), R-49 or higher maximizes energy savings due to larger temperature swings.

Insulation Installation · San Francisco

Free Insulation Install Inspection in San Francisco

CA licensed and insured. Written estimate before any work begins. Same-day response available for urgent situations in San Francisco.

Schedule an Inspection(831) 500-1613
Trusted by San Francisco families since 2005