101 Exterminators
101 Exterminators
(831) 500-1613

Insulation Services

Insulation Installation in South 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 South San Francisco and surrounding San Mateo County.

Free Inspection in South San Francisco(831) 500-1613

Local Context

Why South 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.

Subterranean termites in fog-belt neighborhoods; drywood termites in the warmer eastern hillside areas. Mid-century housing stock across the city has accumulated termite exposure that warrants regular professional inspection.

South San Francisco Climate

South San Francisco has a coastal fog climate similar to Daly City but slightly warmer on the eastern slopes facing the Bay. The San Bruno Mountain ridgeline deflects some marine influence from the western residential areas. Soil moisture remains elevated year-round from fog drip and winter rains averaging 18–22 inches annually.

Housing Stock

Post-WWII housing dominates — 1940s–1960s wood-frame tract homes across the residential hillside neighborhoods. These structures are 60–80 years old and have had significant cumulative termite exposure. The older downtown-adjacent areas have some pre-1940 construction. Commercial and biotech corridor construction is modern.

Why Local Expertise Matters

South San Francisco's mid-century housing stock and coastal fog exposure create a specific termite risk profile. We understand the crawl space issues common in these homes and provide SPCB-licensed (#9119) inspection and treatment with WDO reports accepted for local real estate transactions.

Warning Signs

Signs You Need Insulation Install Service in South 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 South San Francisco

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

Free Insulation Install Inspection in South San Francisco

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

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